Dual-band satellite base station system and system control method and device

Abstract

The invention provides a dual-band satellite base station system and a control method and device of the dual-band satellite base station system, and relates to the field of communication. The method comprises the following steps: acquiring position information and environment information of a current satellite base station and the type of data to be transmitted; determining a first communication frequency band and a second communication frequency band required by the to-be-transmitted data according to the type of the to-be-transmitted data; performing satellite alignment processing on a first antenna corresponding to the first communication frequency band and a second antenna corresponding to the second communication frequency band according to the position information of the current satellite base station to obtain a first communication link and a second communication link; according to the current environment information, performing communication link dynamic allocation processing on the to-be-transmitted data in the first communication link and the second communication link to obtain a link allocation result; and performing communication transmission of the to-be-transmitted data with the target network based on the first communication link and / or the second communication link in the link allocation result. According to the scheme of the invention, rapid, reliable and multi-mode emergency communication is realized.

Description

Technical Field

[0001] This invention relates to the field of communications, and more specifically to a dual-band satellite base station system and its control method and apparatus. Background Technology

[0002] Currently, natural disasters, accidents, social security emergencies, and major public health events occur frequently. In the event of a general disaster, satellite communication networks can be used to provide emergency rescue services. However, when a major natural disaster or emergency occurs, the existing single-band satellite communication network often cannot meet the needs of on-site emergency communication. The characteristics of being on-site, short in duration, and involving a large amount of information pose serious challenges to on-site communication. Single-band communication methods often delay the collection, processing, and transmission of information, thus missing the best opportunity for emergency prevention and rescue. Secondly, the existing satellite base station system has a low degree of automation, and the satellite connection process is cumbersome and time-consuming, which cannot meet the requirement of "speed" in emergency communication. Summary of the Invention

[0003] This invention provides a dual-band satellite base station system and its control method and apparatus to achieve fast, reliable, and multi-mode emergency communication, ensuring long-distance communication dispatch and image information transmission at emergency sites, and providing effective communication support and guarantee for emergency rescue.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: Embodiments of the present invention provide a control method for a dual-band satellite base station system, comprising: Obtain the current location information, environmental information, and type of data to be transmitted from the satellite base station; Based on the type of data to be transmitted, determine the first and second communication frequency bands required for transmitting the data; Based on the current location information of the satellite base station, the first antenna corresponding to the first communication frequency band and the second antenna corresponding to the second communication frequency band are respectively subjected to satellite alignment processing to obtain the first communication link and the second communication link; Based on the current environment information, in the first and second communication links, the data to be transmitted is dynamically allocated to the communication links to obtain the link allocation results. Based on the first and / or second communication links in the link allocation results, the data to be transmitted is transmitted to the target network.

[0005] Optionally, based on the type of data to be transmitted, a first communication frequency band and a second communication frequency band required for transmitting the data to be transmitted are determined, including: Based on the type of data to be transmitted, the service flow is classified according to data priority, bandwidth requirements and real-time requirements to obtain the first type of data to be transmitted and the second type of data to be transmitted. A first communication frequency band is determined based on the bandwidth range of the first type of data to be transmitted; wherein, the first communication frequency band is a first frequency band range with a first preset bandwidth; A second communication frequency band is determined based on the bandwidth range of the second type of data to be transmitted; wherein the second communication frequency band is a second frequency band range with a second preset bandwidth, and the lowest frequency of the first frequency band range is greater than the highest frequency of the second preset frequency band range.

[0006] Optionally, based on the current location information of the satellite base station, the first antenna corresponding to the first communication frequency band is subjected to satellite alignment processing to obtain the first communication link, including: Obtain the parameters of the first target satellite corresponding to the first communication frequency band; Based on the parameters of the first target satellite and the longitude and latitude of the current satellite base station location information, determine the first elevation angle, the first polarization angle, and the first azimuth angle of the first antenna corresponding to the first communication frequency band; The first search boundary is determined based on the first azimuth angle and the first pitch angle; Based on the first search boundary, determine the initial beacon signal of the first target satellite; Based on the initial beacon signal and the first polarization angle of the first target satellite, the first antenna corresponding to the first communication frequency band is fine-tuned to obtain the first communication link.

[0007] Optionally, based on the parameters of the first target satellite and the longitude and latitude of the current satellite base station location information, the first elevation angle, first polarization angle, and first azimuth angle of the first antenna corresponding to the first communication frequency band are determined, including: Based on the parameters of the first target satellite and the longitude and latitude of the current satellite base station's location information, determine the longitude difference between the current satellite base station and the first target satellite; Based on the longitude difference, determine the first elevation angle, the offset angle corresponding to the first azimuth angle, and the initial polarization angle of the first antenna corresponding to the first communication frequency band. The first azimuth angle is determined based on the longitude difference, the latitude of the current satellite base station, and the offset angle. Based on the latitude of the current satellite base station, the initial polarization angle is corrected to obtain the first polarization angle.

[0008] Optionally, the first azimuth angle is determined based on the longitude difference, the latitude of the current satellite base station, and the offset angle, including: The initial azimuth angle is determined based on the longitude difference, the latitude of the current satellite base station, and the offset angle, including: when the latitude of the current satellite base station is greater than zero and the longitude difference is greater than zero, the initial azimuth angle is equal to 180 degrees minus the offset angle; when the latitude of the current satellite base station is greater than zero and the longitude difference is less than zero, the initial azimuth angle is equal to 180 degrees plus the offset angle; when the latitude of the current satellite base station is less than zero and the longitude difference is greater than zero, the initial azimuth angle is equal to the offset angle; when the latitude of the current satellite base station is less than zero and the longitude difference is less than zero, the initial azimuth angle is equal to 360 degrees plus the offset angle. The initial azimuth angle is normalized to obtain the first azimuth angle.

[0009] Optionally, based on the current location information of the satellite base station, the second antenna corresponding to the second communication frequency band is subjected to satellite alignment processing to obtain the second communication link, including: Obtain the parameters of the second target satellite corresponding to the second communication frequency band; Based on the parameters of the second target satellite and the longitude and latitude of the current satellite base station location information, determine the second elevation angle, second polarization angle, and second azimuth angle of the antenna corresponding to the second communication frequency band; The second search boundary is determined based on the second azimuth angle and the second elevation angle; Based on the second search boundary, determine the initial beacon signal of the second target satellite; Based on the initial beacon signal and second polarization angle of the second target satellite, the second antenna corresponding to the second communication frequency band is fine-tuned to obtain the second communication link.

[0010] Optionally, based on the current environment information, dynamic link allocation processing is performed on the data to be transmitted in the first and second communication links to obtain the link allocation result, including: Obtain the first channel quality parameters corresponding to the first communication link, wherein the first channel quality parameters include the signal strength and bit error rate of the current communication link; Determine the rain attenuation index based on current environmental information; Based on the current environmental information and the first channel quality parameters, the allocation weights of various types of data to be transmitted between the first communication link and the second communication link are dynamically adjusted to obtain the link allocation result.

[0011] Optionally, based on the current environmental information and the first channel quality parameters, the allocation weights of various types of data to be transmitted between the first and second communication links are dynamically adjusted to obtain the link allocation results, including: When the signal strength of the first communication link is detected to be less than a preset strength threshold, and the bit error rate and / or rain attenuation index is higher than the corresponding preset threshold, the transmission weight of the data to be transmitted on the second communication link is increased, and at least a portion of the data to be transmitted on the first communication link is switched to the second communication link for transmission. The channel quality of the first communication link is monitored in real time. When the signal strength of the first communication link is detected to be greater than a preset strength threshold, and the bit error rate and / or rain attenuation index is higher than the corresponding preset threshold, the data to be transmitted that was previously switched from the first communication link to the second communication link is switched back to the first communication link for transmission, and the link allocation result is output in real time.

[0012] Embodiments of the present invention also provide a control device for a dual-band satellite base station system, comprising: The acquisition module is used to acquire the current location information, environmental information, and type of data to be transmitted from the satellite base station. The processing module is configured to determine the first and second communication frequency bands required for transmitting the data according to the type of data to be transmitted; perform satellite alignment processing on the first antenna corresponding to the first communication frequency band and the second antenna corresponding to the second communication frequency band according to the current location information of the satellite base station, respectively, to obtain a first communication link and a second communication link; perform dynamic allocation processing of the communication link to be transmitted on the first and second communication links according to the current environmental information, to obtain a link allocation result; and perform communication transmission of the data to be transmitted with the target network based on the first and / or second communication links in the link allocation result.

[0013] Embodiments of the present invention also provide a dual-band satellite base station system, comprising: The system includes a control device and, respectively, a dual-band transceiver, a BeiDou positioning module, an azimuth drive module, a pitch drive module, and a polarization drive module, all electrically connected to the control device. The dual-band transceiver is used for receiving and transmitting signals from the first and second communication links. The BeiDou positioning module is used to acquire the current location information of the satellite base station. The azimuth drive module, pitch drive module, and polarization drive module are used to adjust the spatial pointing and polarization angles of the antennas corresponding to the first and second communication frequency bands during satellite alignment. The control device is the control device for the aforementioned dual-band satellite base station system.

[0014] The above-described solution of the present invention has at least the following beneficial effects: The control method for a dual-band satellite base station system described in this invention acquires the current location information, environmental information, and type of data to be transmitted from the current satellite base station. Based on the type of data to be transmitted, it determines the first and second communication frequency bands required for transmitting the data. According to the current location information of the satellite base station, it performs satellite alignment processing on the first antenna corresponding to the first communication frequency band and the second antenna corresponding to the second communication frequency band, respectively, to obtain a first communication link and a second communication link. Based on the current environmental information, it performs dynamic communication link allocation processing on the first and second communication links to obtain a link allocation result. Based on the first and / or second communication links in the link allocation result, it transmits the data to be transmitted to the target network. This achieves fast, reliable, and multi-mode emergency communication, ensuring long-distance communication dispatch and image information backhaul at emergency sites, providing effective communication support and guarantee for emergency rescue. Attached Figure Description

[0015] Figure 1 This is a flowchart illustrating the control method of the dual-band satellite base station system of the present invention; Figure 2 This is a schematic diagram of the module block of the dual-band satellite base station system of the present invention; Figure 3 This is a schematic diagram illustrating the actual application process of the dual-band satellite base station system of the present invention; Figure 4 This is a block diagram of the control device for the dual-band satellite base station system of the present invention. Detailed Implementation

[0016] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0017] like Figure 1 As shown, an embodiment of the present invention proposes a control method for a dual-band satellite base station system, comprising: Step 1: Obtain the current satellite base station's location information, environmental information, and the type of data to be transmitted; Step 2: Determine the first and second communication frequency bands required for transmitting the data according to the type of data to be transmitted; Step 3: Based on the current location information of the satellite base station, perform satellite alignment processing on the first antenna corresponding to the first communication frequency band and the second antenna corresponding to the second communication frequency band to obtain the first communication link and the second communication link; Step 4: Based on the current environment information, perform dynamic communication link allocation processing on the data to be transmitted in the first and second communication links to obtain the link allocation result; Step 5: Based on the first communication link and / or the second communication link in the link allocation result, perform communication transmission of the data to be transmitted with the target network.

[0018] In this embodiment, in step 1, the location information of the current satellite base station can be obtained through a single Beidou module. If the Beidou module fails to locate, the previously stored location or the factory default value is used. Environmental information is obtained through a sensor module, and the type of data to be transmitted is obtained through an input module. The types of data to be transmitted include video, voice, and files. In step 2, service flows are classified according to the priority, bandwidth requirements, and real-time requirements of data types (such as video, voice, and files) to obtain a first type of data to be transmitted and a second type of data to be transmitted. The first type of data to be transmitted is transmitted through a first communication frequency band, and the second type of data to be transmitted is transmitted through a second communication frequency band. The first communication frequency band is the Ka band, and the second communication frequency band is the Ku band. In step 5, After satellite alignment is completed, the IoT module, Tiantong module, router, and WiFi module of the dual-band satellite base station system are connected and used to form a high-throughput satellite internet + all-network compatible base station + Mesh communication full-coverage network communication network. The system completes network coverage through the WiFi module, and at the same time, through the built-in all-network compatible base station module, it can achieve network coverage of China Mobile, China Telecom, China Unicom, etc., and nearby handheld terminals can access the operator's network to realize voice, video, etc. Based on the constructed full-coverage communication network, according to the allocation results, the first type of data to be transmitted and the second type of data to be transmitted are transmitted to the corresponding satellites through the first communication link and / or the second communication link, respectively, and remote communication with remote servers or clients is carried out through the corresponding satellites.

[0019] The control method for the dual-band satellite base station system described in this invention achieves redundant satellite link communication by employing Ka and Ku dual-band high-throughput communication modes. Compared to traditional satellites, high-throughput satellites provide high-quality satellite communication. The fully automatic satellite alignment mechanism eliminates the need for manual intervention, significantly shortening activation time, lowering the operational threshold, and enabling rapid response in emergency situations. By using a fully network-enabled base station to communicate with the core network via a designated base station gateway connected to the satellite, geographical limitations are eliminated, reducing reliance on traditional terrestrial transmission networks. In emergencies, satellite backhaul base stations can quickly establish temporary communication networks. This control method for the dual-band satellite base station system can be widely applied in numerous fields such as emergency communication, operator communication support, fire fighting, military border defense, transportation, petroleum, and power. For example, in emergency rescue scenarios, when terrestrial communication networks are damaged, Ka and Ku dual-band high-throughput communication equipment can quickly establish satellite communication links, enabling voice, video, and data transmission between the site and the command center, providing strong communication support for rescue operations.

[0020] In this embodiment, the control method of the dual-band satellite base station system can effectively cope with extreme environments of network outage, circuit outage, and power outage by controlling the dual-band satellite base station system. By deploying a multi-functional satellite station system and matching it with various portable emergency communication equipment, an integrated on-site emergency communication support system can be quickly constructed, opening up voice, image, and data transmission channels between the front-line rescue, the forward command post, and the rear command center. This enables rapid, reliable, and multi-mode emergency communication, ensuring long-distance transmission of emergency on-site communication dispatch and image information, and providing effective communication support and guarantee for emergency rescue.

[0021] In an optional embodiment of the present invention, step 2, determining the first communication frequency band and the second communication frequency band required for transmitting the data to be transmitted according to the type of data to be transmitted, includes: Step 21: Based on the type of data to be transmitted, classify the service flow according to data priority, bandwidth requirements and real-time requirements to obtain the first type of data to be transmitted and the second type of data to be transmitted; Step 22: Determine the first communication frequency band based on the bandwidth range of the first type of data to be transmitted; wherein, the first communication frequency band is the first frequency band range of the first preset bandwidth; Step 23: Determine the second communication frequency band based on the bandwidth range of the second type of data to be transmitted; wherein the second communication frequency band is the second frequency band range of the second preset bandwidth, and the lowest frequency of the first frequency band range is greater than the highest frequency of the second preset frequency band range.

[0022] In this embodiment, the first type of data to be transmitted is transmitted through a first communication frequency band, and the second type of data to be transmitted is transmitted through a second communication frequency band. The first communication frequency band is the Ka band, and the second communication frequency band is the Ku band. The frequency range of the Ka band is 26.5 GHz to 40 GHz, with commonly used transmission frequencies of 28.00 GHz to 31.00 GHz and receiving frequencies of 17.70 GHz to 21.20 GHz. This band has a wide bandwidth, can support higher data transmission rates, and can realize large-capacity data transmission, making it suitable for applications with high bandwidth requirements, such as high-definition video transmission and large data file downloads. The frequency range of the Ku band is 10.7 GHz to 14.5 GHz, with transmission frequencies of 13.75 GHz to 14.50 GHz and receiving frequencies of 10.7 GHz to 12.75 GHz. Compared with the Ka band, the Ku band is less affected by weather factors such as rainfall, has a weaker rain attenuation effect, and better communication stability, giving it an advantage in some scenarios with high weather adaptability requirements. In this embodiment, step 21 specifically involves classifying the data to be transmitted, which has a large data volume and is extremely sensitive to bandwidth requirements, into the first category of data to be transmitted, such as high-definition video surveillance and large-scale remote sensing data files. Since the first category of data to be transmitted has a large data volume and is extremely sensitive to bandwidth, the Ka band, i.e., the first communication band, is determined to be used. The data to be transmitted, which has a small data volume, high priority, and extremely high requirements for real-time performance and reliability, is classified into the second category of data to be transmitted, i.e., Ku band communication, such as voice calls, key sensor status information, control commands, etc. Since the second category of data to be transmitted has a small data volume but extremely high requirements for real-time performance and reliability, the Ku band, i.e., the second communication band, is determined to be used, taking advantage of its strong resistance to rain attenuation to ensure uninterrupted connection.

[0023] In this embodiment, the control method of the dual-band satellite base station system utilizes both the Ka and Ku bands for communication simultaneously. By rationally allocating resources between the two bands, it achieves higher communication capacity and stronger anti-interference capabilities. In this mode, the system can dynamically adjust the data transmission path and method based on factors such as signal quality and bandwidth usage of the two bands to optimize communication performance. This enables flexible bandwidth allocation and efficient resource utilization, improving the reliability and stability of the communication system. It also enhances the system's anti-interference capabilities and adaptability to different environments.

[0024] In a preferred embodiment, communication can also be carried out using either the Ka band or the Ku band, depending on actual needs and environmental conditions. For example, in clear weather with extremely high bandwidth requirements, the Ka band can be prioritized to obtain a higher data transmission rate; while in cases of heavy rainfall or interference with the Ka band, the Ku band can be switched to ensure the continuity and stability of communication.

[0025] In a preferred embodiment, the Ka band and Ku band can both be connected to the same satellite, and the satellite base station can adopt an integrated design and a unified platform, thus eliminating the need for tools to support rapid switching between Ka and Ku bands.

[0026] In an optional embodiment of the present invention, step 3, which involves performing satellite alignment processing on the first antenna corresponding to the first communication frequency band based on the current location information of the satellite base station to obtain the first communication link, includes: Step 311: Obtain the parameters of the first target satellite corresponding to the first communication frequency band; the first target satellite parameters include the orbital longitude and orbital altitude of the first target satellite; Step 312: Based on the parameters of the first target satellite and the longitude and latitude of the current satellite base station location information, determine the first elevation angle, the first polarization angle, and the first azimuth angle of the first antenna corresponding to the first communication frequency band; Step 313: Determine the first search boundary based on the first azimuth and the first pitch. Step 314: Determine the initial beacon signal of the first target satellite based on the first search boundary; Step 315: Based on the initial beacon signal and the first polarization angle of the first target satellite, fine-tune the first antenna corresponding to the first communication frequency band to obtain the first communication link.

[0027] In an optional embodiment of the present invention, step 312, determining the first elevation angle, first polarization angle, and first azimuth angle of the first antenna corresponding to the first communication frequency band based on the first target satellite parameters and the longitude and latitude of the current satellite base station location information, includes: Step 3121: Determine the longitude difference between the current satellite base station and the first target satellite based on the longitude and latitude of the first target satellite parameters and the location information of the current satellite base station; Step 3122: Based on the longitude difference, determine the first elevation angle, the offset angle corresponding to the first azimuth angle, and the initial polarization angle of the first antenna corresponding to the first communication frequency band. Step 3123: Determine the first azimuth angle based on the longitude difference, the latitude of the current satellite base station, and the offset angle; Step 3124: Correct the initial polarization angle according to the latitude of the current satellite base station to obtain the first polarization angle.

[0028] In this embodiment, step 3121 specifically involves using the formula... Determine the longitude difference ,in, The orbital longitude of the primary target satellite; The geographical longitude of the current satellite base station; In step 3122, the first elevation angle of the first antenna corresponding to the first communication frequency band is determined based on the longitude difference, specifically by using the formula... Determine the first pitch angle , where arctan() represents the inverse function of the tangent function; is the average radius of the Earth, taken as 6378.137 km; h is the orbital altitude of the first target satellite, taken as 35786 km for geostationary orbit satellites; A is the radian conversion factor, used to convert angles to radians. B is the angle conversion factor, used to convert radians to degrees. The calculated first pitch angle Should meet If the calculated result is less than 10° or greater than 90°, it means that the result is incorrect, that is, the input parameters are incorrect, and the longitude difference needs to be rechecked, that is, the longitude and latitude of the first target satellite parameters and the current satellite base station location information need to be rechecked. In step 3122, the offset angle corresponding to the first azimuth angle of the first antenna corresponding to the first communication frequency band is determined based on the longitude difference, specifically by using the formula... Determine the offset angle ; In step 3122, the initial polarization angle of the first traverse corresponding to the first communication frequency band is determined based on the longitude difference, specifically by using the formula... Determine the initial polarization angle ; Step 3124: Based on the latitude of the current satellite base station, the initial polarization angle is corrected to obtain a first polarization angle. Specifically, when the latitude of the current satellite base station is greater than zero, the initial polarization angle is normalized to [value missing]. Within the standard range, the first polarization angle is obtained; when the latitude of the current satellite base station is less than zero, an offset is added to the initial polarization angle, and the initial polarization angle after adding the offset is normalized to... Within the standard range, the first polarization angle is obtained, and the offset is 180 degrees; the normalization process facilitates the controller of the dual-band satellite base station system to drive the polarization transmission module according to the normalized angle to match the polarization mode of the satellite signal.

[0029] The control method for the dual-band satellite base station system described in this invention enables rapid satellite alignment of the dual-band satellite base station system through the aforementioned satellite alignment process, thereby further improving the on-site emergency communication requirements of the dual-band satellite base station system and enabling rapid communication.

[0030] In an optional embodiment of the present invention, step 3123, determining the first azimuth angle based on the longitude difference, the latitude of the current satellite base station, and the offset angle, includes: Step 31231: Based on the longitude difference, the latitude of the current satellite base station, and the offset angle, determine the initial azimuth angle. When the latitude of the current satellite base station is greater than zero and the longitude difference is greater than zero, the initial azimuth angle is equal to 180 degrees minus the offset angle; when the latitude of the current satellite base station is greater than zero and the longitude difference is less than zero, the initial azimuth angle is equal to 180 degrees plus the offset angle; when the latitude of the current satellite base station is less than zero and the longitude difference is greater than zero, the initial azimuth angle is equal to the offset angle; when the latitude of the current satellite base station is less than zero and the longitude difference is less than zero, the initial azimuth angle is equal to 360 degrees plus the offset angle. Step 31232: Normalize the initial azimuth angle to obtain the first azimuth angle.

[0031] In this embodiment, the initial azimuth angle is normalized to obtain the first azimuth angle. Specifically, the first azimuth angle is... Normalized to a standard range of 0 to 360 degrees, this facilitates the controller of the dual-band satellite base station system to drive the rotation of the azimuth transmission module based on the normalized first azimuth angle.

[0032] In this embodiment, step 313, determining the first search boundary based on the first azimuth angle and the first pitch angle, includes: Step 3131: Determine the azimuth range based on the first preset value; wherein the azimuth range is equal to the first preset value plus the first azimuth angle, and the first preset value is ±45 degrees. Step 3132: Determine the pitch range according to the second preset value; wherein the pitch range is equal to the second preset value plus the pitch range, and the second preset value is ±5 degrees; Step 3133: Determine the first search boundary based on the azimuth and elevation ranges; specifically, assuming the first elevation is 42.5 degrees, the elevation range of the first search boundary is 42.5 degrees ± 5 degrees, i.e., 37.5 degrees to 47.5 degrees; assuming the first azimuth is 167.3 degrees, the azimuth range of the first search boundary is 122.3 degrees to 212.3 degrees. In this embodiment, in step 314, blind acquisition and scanning of the target satellite are performed within the search boundary to obtain the initial beacon signal of the first target satellite. Specifically, assuming the first polarization angle is -12.8 degrees and the first elevation is 42.5 degrees, the elevation range is 37.5 degrees to 47.5 degrees; the first azimuth angle is 167.3 degrees, and the azimuth range is 122.3 degrees to 212.3 degrees. The polarization motor is controlled by the polarization drive module to rotate the antenna polarization angle to -12.8 degrees and keep it stationary. The elevation motor of the dual-band satellite base station system is controlled by the elevation drive module to move the antenna to... The azimuth motor is then moved from 122.3 degrees to the right (in the 212.3-degree direction) at a speed of 4 degrees per second via the azimuth drive module. Simultaneously, the controller continuously reads the signal strength through the beacon receiver interface. If no signal is captured throughout the process (the signal does not exceed the recognition threshold of 1.6), the pitch increases by 1 degree to 38.5 degrees, and the azimuth scans back from 212.3 degrees to 122 degrees. The pitch increases sequentially, and the azimuth scans back and forth until the beacon signal strength exceeds the first preset parameter, i.e., the recognition threshold (such as 1.6). At this point, the scanning stops immediately, and the system enters the tracking state, obtaining the initial beacon signal.

[0033] In step 315, based on the initial beacon signal and the first polarization angle of the first target satellite, the first antenna corresponding to the first communication frequency band is fine-tuned to obtain the first communication link, including: Step 3151: Based on the initial beacon signal, the first antenna is fine-tuned using a peak search method to determine the maximum value of the beacon signal, which is the target beacon signal; Step 3152: Based on the maximum value of the beacon signal, i.e. the target beacon signal, and the first polarization angle, the first antenna is fine-tuned to obtain the first communication link.

[0034] In this embodiment, step 3151 specifically involves acquiring the azimuth and elevation angles corresponding to the initial beacon signal, adjusting the antenna to the azimuth and elevation angles corresponding to the initial beacon signal, and then the controller commands the azimuth transmission module to continue moving to the right at an extremely slow speed (e.g., 0.1 degrees per second). The beacon receiver provides real-time feedback of the signal value. When the controller detects the inflection point where the signal changes from rising to falling (i.e., the maximum signal value), the signal at the current inflection point is taken as the peak point of the azimuth, and the corresponding azimuth angle is recorded (assumed to be 165.5 degrees). Similarly, the controller commands the elevation transmission module to move upward at an extremely slow speed to determine the corresponding inflection point value and record the corresponding elevation angle (assumed to be 42.1 degrees). After finding the target beacon signal corresponding to the corresponding inflection point, i.e., the maximum signal value point, the elevation motor and azimuth motor are adjusted according to the angle corresponding to the target beacon signal to adjust the antenna to the corresponding angle, i.e., the elevation angle is 42.1 degrees and the azimuth angle is 165.5 degrees, and the satellite is continuously tracked. Step 3152 specifically involves controlling the antenna to perform a slow scan within a range of ±10 degrees, centered on a polarization angle of -12.8 degrees, based on the target beacon signal. Simultaneously, the controller continuously monitors the signal strength of the beacon receiver and the signal-to-noise ratio (SNR) fed back by the modem. When it is found that when the polarization angle is adjusted to a certain value, such as -11.5 degrees, although the signal strength does not change much, the SNR increases by 3dB, which means less interference and higher communication quality, the controller commands the polarization motor to stop and locks the polarization angle of the first antenna at -11.5 degrees, thereby obtaining the first communication link capable of high-quality communication with the target satellite.

[0035] In an optional embodiment of the present invention, step 3, based on the current location information of the satellite base station, performs satellite alignment processing on the second antenna corresponding to the second communication frequency band to obtain the second communication link, including: Step 321: Obtain the parameters of the second target satellite corresponding to the second communication frequency band; the parameters of the second target satellite are the orbital longitude and orbital altitude of the second target satellite; Step 322: Based on the parameters of the second target satellite and the longitude and latitude of the current satellite base station location information, determine the second elevation, second polarization angle, and second azimuth angle of the second antenna corresponding to the second communication frequency band; Step 323: Determine the second search boundary based on the second azimuth angle and the second pitch angle; Step 324: Determine the initial beacon signal of the second target satellite based on the second search boundary; Step 325: Based on the initial beacon signal and second polarization angle of the second target satellite, fine-tune the second antenna corresponding to the second communication frequency band to obtain the second communication link.

[0036] In this embodiment, the satellite alignment process of the first communication frequency band and the satellite alignment process of the second communication frequency band are the same. It is only necessary to replace the parameters of the first target satellite with the parameters of the second target satellite. When both the first communication frequency band and the second communication frequency band use the same target satellite, the two antennas can be controlled to move synchronously at the same time to perform satellite alignment, or they can be controlled to perform satellite alignment separately.

[0037] In an optional embodiment of the present invention, step 4 involves performing dynamic communication link allocation processing on the data to be transmitted in the first and second communication links based on the current environment information, to obtain the link allocation result, including: Step 41: Obtain the first channel quality parameters corresponding to the first communication link. The first channel quality parameters include the signal strength and bit error rate of the current communication link. Step 42: Determine the rain attenuation index based on the current environmental information; Step 43: Based on the current environmental information and the first channel quality parameters, dynamically adjust the allocation weight of various types of data to be transmitted between the first communication link and the second communication link to obtain the link allocation result.

[0038] In this embodiment, in step 41, the system's link quality monitoring module starts working continuously to monitor the strength and bit error rate of the received signal in the Ka band. The bit error rate is the ratio of the number of erroneous bits at the receiving end to the total number of bits transmitted at the transmitting end. A high bit error rate means that the link is unstable, which can lead to problems such as video stuttering, voice noise, and data file corruption. In step 42, firstly, data is stored in the installed system during other time periods. Specifically, the system automatically records and maintains the benchmark values ​​of beacon signal strength for a Ka-band beacon signal in sunny, cloudy, light rain, moderate rain, and heavy rain or torrential rain conditions (assuming -52dB for sunny weather, -58dB for cloudy weather, -65dB for light rain, -80dB for moderate rain, and -100dB for heavy rain or torrential rain). These benchmarks are stored in the system, and corresponding preset thresholds are set, for example, to -60dB. Then, the system acquires the current environmental information, i.e., the current weather information, at its current location in real time. When the input environment is sunny, the corresponding output rain attenuation index is -52dB; when the output environment is moderate rain, the corresponding output rain attenuation index is -80dB. The specific determination of the current environmental information can be based directly on the weather forecast for the current location or on the current rainfall amount. The specific determination process can be set according to requirements. During use, the impact of the current rain attenuation index on the current signal can be judged by comparing the absolute value of the rain attenuation index with the absolute value of a preset threshold. If the absolute value of the rain attenuation index is greater than the absolute value of the preset threshold, it indicates that the current environment has an impact on data transmission; the larger the difference between the two, the greater the impact.

[0039] In a preferred embodiment, the rain attenuation index can also be determined directly based on the difference between the signal strength of the current communication link and the beacon signal strength reference value. Specifically, firstly, data is stored in the installed system during other time periods, i.e., the average signal strength of a Ka band in clear weather or other weather conditions is automatically recorded and maintained. This signal strength is used as the beacon signal strength reference value, for example, the reference value is set to -50dB, and the reference value is stored in the system. At the same time, a corresponding preset threshold is set, for example, 8dB. Then, during actual use, the signal strength of the current communication link is obtained in real time, for example, -60dB. The current signal strength minus -60dB is subtracted from the reference value -50dB to obtain the rain attenuation index of 10dB. The rain attenuation index of 10dB is compared with the preset threshold of 8dB. When the comparison result is greater than the preset threshold, it proves that the current environment is poor and will affect data transmission. The larger the difference between the rain attenuation index and the preset threshold, the more severe the environment, such as heavy rain. In this case, only the second communication link can be used for data communication.

[0040] In one optional embodiment, for the Ku band, signal strength and bit error rate are also monitored, but due to its strong resistance to rain attenuation, the system has higher expectations for its stability; at the same time, the second channel quality parameters corresponding to the second communication link can also be obtained, the second channel quality parameters including the signal strength and bit error rate of the current communication link; Based on the current environmental information, the first channel quality parameters, and the second channel quality parameters, the allocation weights of various types of data to be transmitted between the first and second communication links are dynamically adjusted to obtain the allocation result.

[0041] In an optional embodiment of the present invention, step 43 involves dynamically adjusting the allocation weights of various types of data to be transmitted between the first communication link and the second communication link based on the current environmental information and the first channel quality parameters, to obtain an allocation result, including: When the signal strength of the first communication link is detected to be less than a preset strength threshold, and the bit error rate and / or rain attenuation index is higher than the corresponding preset threshold, the transmission weight of the data to be transmitted on the second communication link is increased, and at least a portion of the data to be transmitted on the first communication link is switched to the second communication link for transmission. The channel quality of the first communication link is monitored in real time. When the signal strength of the first communication link is detected to be greater than a preset strength threshold, and the bit error rate and / or rain attenuation index is higher than the corresponding preset threshold, the data to be transmitted that was previously switched from the first communication link to the second communication link is switched back to the first communication link for transmission, and the allocation result is output in real time.

[0042] In this embodiment, a signal strength less than a preset strength threshold indicates a poor signal; a bit error rate higher than a corresponding preset threshold indicates a high error rate; and rain attenuation index higher than a corresponding preset threshold indicates that data transmission is currently affected. Throughout the dynamic allocation process, bandwidth resources for high-priority services are guaranteed, the highest priority voice communication and control command data are maintained on the originally allocated link, and video conferencing services are switched from the first communication link to the second communication link. For high-definition video stream services, bandwidth adaptive encoding is initiated to reduce their transmission bit rate before switching them from the first communication link to the second communication link.

[0043] In an optional embodiment, based on current environmental information and the first channel quality parameters, the allocation weights of various types of data to be transmitted between the first communication link and the second communication link are dynamically adjusted to obtain the link allocation result, and the method further includes: When all parameters of the signal strength, bit error rate, and rain attenuation index of the first communication link are less than the corresponding preset threshold, or when any two parameters of the signal strength, bit error rate, and rain attenuation index of the second communication link are less than the corresponding preset threshold, bandwidth adaptive encoding is initiated for the high-definition video stream service in the data to be transmitted, the video encoding bitrate is reduced, the data to be transmitted after the video encoding bitrate is reduced is switched to the second communication link for transmission, and the link allocation result is output in real time.

[0044] like Figure 2 and Figure 3 As shown, the specific implementation process of the above method of the present invention is as follows: First, the location information of the current satellite base station is obtained through a single BeiDou module. If the BeiDou module fails to locate the data, the previously stored location or the factory default value is used. Environmental information is obtained through a sensor module, and the type of data to be transmitted is obtained through an input module. The types of data to be transmitted include video, voice, and files. Simultaneously, service flows are classified according to the priority, bandwidth requirements, and real-time requirements of the data type (e.g., video, voice, files), resulting in a first type of data to be transmitted and a second type of data to be transmitted. The first type of data is transmitted through a first communication frequency band, and the second type of data is transmitted through a second communication frequency band. The first communication frequency band is the Ka band, and the second communication frequency band is the Ku band. The corresponding target satellite is determined based on the first and second communication frequency bands. Based on the location information of the current satellite base station, the first antenna corresponding to the first communication frequency band and the second antenna corresponding to the second communication frequency band are respectively aligned. During alignment, the first elevation angle, first polarization angle, and first azimuth angle of the first antenna corresponding to the first communication frequency band are determined based on the target satellite parameters and the longitude and latitude of the current satellite base station location information. The second communication frequency band is also aligned. The second elevation angle, second polarization angle, and second azimuth angle of the second antenna corresponding to the signal frequency band are determined. Based on the elevation angle, polarization angle, and azimuth angle determined by the two antennas, the angles of the corresponding antennas are adjusted through the azimuth transmission module, elevation transmission module, and polarization transmission module to achieve precise satellite alignment, thereby obtaining the first and second communication links. After completing the satellite alignment process, the IoT module, Tiantong module, router, and WiFi module of the dual-band satellite base station system are connected and used to form a high-throughput satellite Internet + full-network base station + Mesh communication full-coverage network communication network. The system completes network coverage through the WiFi module to realize on-site communication of electronic devices such as drones. At the same time, through the built-in full-network base station module, the network coverage of China Mobile, China Telecom, and China Unicom can be realized, and nearby handheld terminals can access the operator's network to realize voice, video, etc. Based on the constructed full-coverage communication network, according to the allocation results, the first type of data to be transmitted and the second type of data to be transmitted are transmitted to the corresponding satellites through the first communication link and / or the second communication link, respectively, and remote communication is carried out with the remote server or client through the corresponding satellite. Simultaneously, during communication, the transmission channel of communication information is adjusted in real time according to the current environmental information to ensure that the signal transmitted during communication can be stably transmitted to the corresponding receiving end, such as the command center, via the corresponding satellite. Specifically, the system's link quality monitoring module starts working continuously to monitor the strength and bit error rate of the received signal in the Ka band; whereby the bit error rate is the ratio of the number of erroneous bits at the receiving end to the total number of transmitted bits at the transmitting end. A high bit error rate indicates link instability, which can lead to problems such as video stuttering, voice noise, and data file corruption. Based on the current environmental information, the rain attenuation index is determined, and data is first stored in the installed system during other time periods, specifically automatically... Record and maintain the baseline beacon signal strength values ​​for a Ka-band beacon signal in sunny, cloudy, light rain, moderate rain, and heavy rain or torrential rain conditions (assuming -52dB for sunny weather, -58dB for cloudy weather, -65dB for light rain, -80dB for moderate rain, and -100dB for heavy rain or torrential rain). Store these baselines in the system and set corresponding preset thresholds, such as -60dB. Then, acquire the current environmental information (i.e., the current weather information) at the current system location in real time. When the input environment is sunny, output the corresponding rain attenuation index as -52dB; when the output environment is moderate rain, output the corresponding rain attenuation index. The index is -80dB. The specific determination of the current environmental information can be based directly on the weather forecast for the current location or on the current rainfall. The specific determination process can be set according to requirements. During use, the impact of the current rain attenuation index on the current signal can be judged by comparing the absolute value of the rain attenuation index with the absolute value of a preset threshold. When the absolute value of the rain attenuation index is greater than the absolute value of the preset threshold, it indicates that the current environment has an impact on data transmission; the larger the difference, the greater the impact. Based on the current environmental information and the first channel quality parameters, the allocation weight of various types of data to be transmitted between the first and second communication links is dynamically adjusted to obtain the allocation... As a result, when the signal strength of the first communication link is detected to be less than a preset strength threshold, and the bit error rate and / or rain attenuation index is higher than the corresponding preset threshold, the transmission weight of the data to be transmitted on the second communication link is increased, at least part of the data to be transmitted on the first communication link is switched to the second communication link for transmission, and the channel quality of the first communication link is monitored in real time. When the signal strength of the first communication link is detected to be greater than a preset strength threshold, and the bit error rate and / or rain attenuation index is higher than the corresponding preset threshold, the data to be transmitted that was previously switched from the first communication link to the second communication link is switched back to the first communication link for transmission, and the allocation result is output in real time.The control method for the dual-band satellite base station system described in this invention achieves redundant satellite link communication by employing Ka and Ku dual-band high-throughput communication modes. Simultaneously, rapid satellite alignment improves rapid response in emergency environments, ensuring the timeliness of rescue efforts. Furthermore, automatic adjustment of the communication link in harsh environments further guarantees the stability of the communication signal, ensuring stable information transmission even in adverse conditions.

[0045] like Figure 4 As shown, embodiments of the present invention also provide a control device 40 for a dual-band satellite base station system, comprising: The acquisition module 401 is used to acquire the current location information, environmental information, and type of data to be transmitted from the satellite base station. The processing module 402 is configured to determine, based on the type of data to be transmitted, the first communication frequency band and the second communication frequency band required for transmitting the data; perform satellite alignment processing on the first antenna corresponding to the first communication frequency band and the second antenna corresponding to the second communication frequency band according to the current location information of the satellite base station, to obtain a first communication link and a second communication link; perform dynamic allocation processing of the communication link to be transmitted on the first communication link and the second communication link according to the current environmental information, to obtain a link allocation result; and perform communication transmission of the data to be transmitted with the target network based on the first communication link and / or the second communication link in the link allocation result.

[0046] Optionally, based on the type of data to be transmitted, a first communication frequency band and a second communication frequency band required for transmitting the data to be transmitted are determined, including: Based on the type of data to be transmitted, the service flow is classified according to data priority, bandwidth requirements and real-time requirements to obtain the first type of data to be transmitted and the second type of data to be transmitted. A first communication frequency band is determined based on the bandwidth range of the first type of data to be transmitted; wherein, the first communication frequency band is a first frequency band range with a first preset bandwidth; A second communication frequency band is determined based on the bandwidth range of the second type of data to be transmitted; wherein the second communication frequency band is a second frequency band range with a second preset bandwidth, and the lowest frequency of the first frequency band range is greater than the highest frequency of the second preset frequency band range.

[0047] Optionally, based on the current location information of the satellite base station, the first antenna corresponding to the first communication frequency band is subjected to satellite alignment processing to obtain the first communication link, including: Obtain the parameters of the first target satellite corresponding to the first communication frequency band; Based on the parameters of the first target satellite and the longitude and latitude of the current satellite base station location information, determine the first elevation angle, the first polarization angle, and the first azimuth angle of the first antenna corresponding to the first communication frequency band; The first search boundary is determined based on the first azimuth angle and the first pitch angle; Based on the first search boundary, determine the initial beacon signal of the first target satellite; Based on the initial beacon signal and the first polarization angle of the first target satellite, the first antenna corresponding to the first communication frequency band is fine-tuned to obtain the first communication link.

[0048] Optionally, based on the parameters of the first target satellite and the longitude and latitude of the current satellite base station location information, the first elevation angle, first polarization angle, and first azimuth angle of the first antenna corresponding to the first communication frequency band are determined, including: Based on the parameters of the first target satellite and the longitude and latitude of the current satellite base station's location information, determine the longitude difference between the current satellite base station and the first target satellite; Based on the longitude difference, determine the first elevation angle, the offset angle corresponding to the first azimuth angle, and the initial polarization angle of the first antenna corresponding to the first communication frequency band. The first azimuth angle is determined based on the longitude difference, the latitude of the current satellite base station, and the offset angle. Based on the latitude of the current satellite base station, the initial polarization angle is corrected to obtain the first polarization angle.

[0049] Optionally, the first azimuth angle is determined based on the longitude difference, the latitude of the current satellite base station, and the offset angle, including: The initial azimuth angle is determined based on the longitude difference, the latitude of the current satellite base station, and the offset angle, including: when the latitude of the current satellite base station is greater than zero and the longitude difference is greater than zero, the initial azimuth angle is equal to 180 degrees minus the offset angle; when the latitude of the current satellite base station is greater than zero and the longitude difference is less than zero, the initial azimuth angle is equal to 180 degrees plus the offset angle; when the latitude of the current satellite base station is less than zero and the longitude difference is greater than zero, the initial azimuth angle is equal to the offset angle; when the latitude of the current satellite base station is less than zero and the longitude difference is less than zero, the initial azimuth angle is equal to 360 degrees plus the offset angle. The initial azimuth angle is normalized to obtain the first azimuth angle.

[0050] Optionally, based on the current location information of the satellite base station, the second antenna corresponding to the second communication frequency band is subjected to satellite alignment processing to obtain the second communication link, including: Obtain the parameters of the second target satellite corresponding to the second communication frequency band; Based on the parameters of the second target satellite and the longitude and latitude of the current satellite base station location information, determine the second elevation angle, second polarization angle, and second azimuth angle of the antenna corresponding to the second communication frequency band; The second search boundary is determined based on the second azimuth angle and the second elevation angle; Based on the second search boundary, determine the initial beacon signal of the second target satellite; Based on the initial beacon signal and second polarization angle of the second target satellite, the second antenna corresponding to the second communication frequency band is fine-tuned to obtain the second communication link.

[0051] Optionally, based on the current environment information, dynamic link allocation processing is performed on the data to be transmitted in the first and second communication links to obtain the link allocation result, including: Obtain the first channel quality parameters corresponding to the first communication link, wherein the first channel quality parameters include the signal strength and bit error rate of the current communication link; Determine the rain attenuation index based on current environmental information; Based on the current environmental information and the first channel quality parameters, the allocation weights of various types of data to be transmitted between the first communication link and the second communication link are dynamically adjusted to obtain the link allocation result.

[0052] Optionally, based on the current environmental information and the first channel quality parameters, the allocation weights of various types of data to be transmitted between the first and second communication links are dynamically adjusted to obtain the link allocation results, including: When the signal strength of the first communication link is detected to be less than a preset strength threshold, and the bit error rate and / or rain attenuation index is higher than the corresponding preset threshold, the transmission weight of the data to be transmitted on the second communication link is increased, and at least a portion of the data to be transmitted on the first communication link is switched to the second communication link for transmission. The channel quality of the first communication link is monitored in real time. When the signal strength of the first communication link is detected to be greater than a preset strength threshold, and the bit error rate and / or rain attenuation index is higher than the corresponding preset threshold, the data to be transmitted that was previously switched from the first communication link to the second communication link is switched back to the first communication link for transmission, and the link allocation result is output in real time.

[0053] It should be noted that this device is the same as the method described above. All implementations of the method described above are applicable to the embodiments of this device and can achieve the same technical effect.

[0054] like Figure 2 and Figure 3 As shown, embodiments of the present invention also provide a dual-band satellite base station system, comprising: The system includes a control device and, respectively, a dual-band transceiver, a BeiDou positioning module, an azimuth drive module, an elevation drive module, and a polarization drive module, all electrically connected to the control device. The dual-band transceiver is used for receiving and transmitting signals from the first and second communication links. The BeiDou positioning module is used to acquire the current location information of the satellite base station. The azimuth drive module, elevation drive module, and polarization drive module are used to adjust the spatial pointing and polarization angles of the antennas corresponding to the first and second communication frequency bands during satellite alignment. The control device is the control device for the dual-band satellite base station system described in the above embodiment.

[0055] In a preferred embodiment, the dual-band satellite base station system further includes: a beacon receiver, an inclinometer, an IoT module, a Tiantong module, a router, and a wireless WiFi module, a full-network compatible base station, and a Mesh base station electrically connected to the control device; wherein, the beacon receiver is used to receive and demodulate satellite beacon signals to obtain signal strength; the inclinometer is used to measure the elevation attitude of the antenna; the Tiantong module and the IoT module are used to remotely transmit fault information such as failed satellite alignment and low elevation angle, equipment location, and satellite parameters to the rear command center; the router is used to build a regional network at the current location to achieve network coverage; the WiFi module is used for wireless network connection of current rescue equipment such as drones; and the full-network compatible base station and Mesh base station are used to achieve network coverage of mobile, telecom, and Unicom networks to ensure that other communication equipment can be used normally.

[0056] In this embodiment, after the satellite station tracks and locks onto the target satellite, the satellite modem automatically completes network access. The system completes network coverage through the WiFi module, and at the same time, it can achieve network coverage for China Mobile, China Telecom, China Unicom, etc. through the built-in all-network-compatible base station module. Nearby handheld terminals can access the operator's network to realize voice, video, etc. The all-network-compatible base station communicates with the core network by accessing the designated base station gateway via satellite, which eliminates the limitations of geographical space and reduces the dependence on traditional terrestrial transmission networks. In emergency situations, the satellite backhaul base station can quickly establish a temporary communication network.

[0057] In this embodiment, the satellite station supports remote online monitoring, location reporting, and remote dispatching functions through built-in Tiantong and IoT modules: The built-in Tiantong module transmits satellite base station positioning information back to the management platform via Tiantong IoT; the built-in Beidou module enables satellite base station location positioning; the built-in IoT module transmits satellite base station system status and indoor / outdoor positioning data back to the management platform in real time, enabling remote management and control of the satellite base station; the built-in WIFI module provides wireless access and WIFI internet service to the local PC or control terminal; the command platform can issue monitoring or diagnostic commands to the Tiantong and IoT modules online, and the Ka-Ku band satellite base station receives the information from the platform via protocols, parses it, and performs online diagnostics and remote control, allowing real-time monitoring of the on-site platform equipment status for easy management and maintenance; when natural disasters such as forest fires and urban fires occur, relying on the high-throughput satellite network, the satellite station interconnects with Mesh self-organizing networks, drones, and all-network-compatible base stations to form a network fusion of "high-throughput satellite internet + all-network-compatible base station + Mesh communication," establishing communication links, providing base station signals, and enabling message exchange. People in disaster areas can access the internet via high-throughput satellite networks, eliminating information silos and ensuring the safety of people's lives and property. On-site audio and video, video conferencing, and internet data are aggregated to Ka-Ku band satellite base stations via Mesh relay links. The data information is then transmitted to high-throughput satellites via ground satellite portable stations, and forwarded to high-throughput gateway stations via satellite communication links for data localization. The gateway stations will receive the data information and transmit it to the public or private network via the internet or terrestrial dedicated lines for data analysis and processing, achieving two-way data transmission and providing data support for timely decision-making. At the same time, it can connect to public / private network base stations to complete on-site signal coverage through the high-throughput satellite network, achieving extended coverage communication and public network communication.

[0058] The dual-band satellite base station system described in this invention supports high-throughput satellite communication in the Ka and Ku bands, and supports location reporting, remote scheduling, and online monitoring functions. It deeply integrates satellites with all-network-compatible base stations and mesh base stations to achieve satellite signal coverage in the field, enabling extended coverage communication and public network communication. It also supports local satellite network wireless coverage. Furthermore, it boasts strong versatility and can be used in various complex application scenarios. Simultaneously, through the integration of Ka-Ku satellite base stations with all-network-compatible base stations and mesh base station modules, it forms an integrated "air-ground-space" emergency communication support system, achieving satellite signal coverage in the field, enabling extended coverage communication and public network communication. It can be applied to industries such as emergency communication, remote sensing mapping, and forest fire prevention, playing an indispensable and positive role.

[0059] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A control method for a dual-band satellite base station system, characterized in that, include: Obtain the current location information, environmental information, and type of data to be transmitted from the satellite base station; Based on the type of data to be transmitted, determine the first and second communication frequency bands required for transmitting the data; Based on the current location information of the satellite base station, the first antenna corresponding to the first communication frequency band and the second antenna corresponding to the second communication frequency band are respectively subjected to satellite alignment processing to obtain the first communication link and the second communication link; Based on the current environment information, in the first and second communication links, the data to be transmitted is dynamically allocated to the communication links to obtain the link allocation results. Based on the first and / or second communication links in the link allocation results, the data to be transmitted is transmitted to the target network.

2. The control method for a dual-band satellite base station system according to claim 1, characterized in that, Based on the type of data to be transmitted, determine the first and second communication frequency bands required for transmitting the data, including: Based on the type of data to be transmitted, the service flow is classified according to data priority, bandwidth requirements and real-time requirements to obtain the first type of data to be transmitted and the second type of data to be transmitted. A first communication frequency band is determined based on the bandwidth range of the first type of data to be transmitted; wherein, the first communication frequency band is a first frequency band range with a first preset bandwidth; A second communication frequency band is determined based on the bandwidth range of the second type of data to be transmitted; wherein the second communication frequency band is a second frequency band range with a second preset bandwidth, and the lowest frequency of the first frequency band range is greater than the highest frequency of the second preset frequency band range.

3. The control method for a dual-band satellite base station system according to claim 1, characterized in that, Based on the current location information of the satellite base station, the first antenna corresponding to the first communication frequency band is subjected to satellite alignment processing to obtain the first communication link, including: Obtain the parameters of the first target satellite corresponding to the first communication frequency band; Based on the parameters of the first target satellite and the longitude and latitude of the current satellite base station location information, determine the first elevation angle, the first polarization angle, and the first azimuth angle of the first antenna corresponding to the first communication frequency band; The first search boundary is determined based on the first azimuth angle and the first pitch angle; Based on the first search boundary, determine the initial beacon signal of the first target satellite; Based on the initial beacon signal and the first polarization angle of the first target satellite, the first antenna corresponding to the first communication frequency band is fine-tuned to obtain the first communication link.

4. The control method for a dual-band satellite base station system according to claim 3, characterized in that, Based on the parameters of the first target satellite and the longitude and latitude of the current satellite base station location information, determine the first elevation angle, first polarization angle, and first azimuth angle of the first antenna corresponding to the first communication frequency band, including: Based on the parameters of the first target satellite and the longitude and latitude of the current satellite base station's location information, determine the longitude difference between the current satellite base station and the first target satellite; Based on the longitude difference, determine the first elevation angle, the offset angle corresponding to the first azimuth angle, and the initial polarization angle of the first antenna corresponding to the first communication frequency band. The first azimuth angle is determined based on the longitude difference, the latitude of the current satellite base station, and the offset angle. Based on the latitude of the current satellite base station, the initial polarization angle is corrected to obtain the first polarization angle.

5. The control method for a dual-band satellite base station system according to claim 4, characterized in that, Based on the longitude difference, the latitude of the current satellite base station, and the offset angle, the first azimuth angle is determined, including: The initial azimuth angle is determined based on the longitude difference, the latitude of the current satellite base station, and the offset angle, including: when the latitude of the current satellite base station is greater than zero and the longitude difference is greater than zero, the initial azimuth angle is equal to 180 degrees minus the offset angle; when the latitude of the current satellite base station is greater than zero and the longitude difference is less than zero, the initial azimuth angle is equal to 180 degrees plus the offset angle; when the latitude of the current satellite base station is less than zero and the longitude difference is greater than zero, the initial azimuth angle is equal to the offset angle; when the latitude of the current satellite base station is less than zero and the longitude difference is less than zero, the initial azimuth angle is equal to 360 degrees plus the offset angle. The initial azimuth angle is normalized to obtain the first azimuth angle.

6. The control method for a dual-band satellite base station system according to claim 1, characterized in that, Based on the current location information of the satellite base station, the second antenna corresponding to the second communication frequency band is subjected to satellite alignment processing to obtain the second communication link, including: Obtain the parameters of the second target satellite corresponding to the second communication frequency band; Based on the parameters of the second target satellite and the longitude and latitude of the current satellite base station location information, determine the second elevation angle, second polarization angle, and second azimuth angle of the antenna corresponding to the second communication frequency band; The second search boundary is determined based on the second azimuth angle and the second elevation angle; Based on the second search boundary, determine the initial beacon signal of the second target satellite; Based on the initial beacon signal and second polarization angle of the second target satellite, the second antenna corresponding to the second communication frequency band is fine-tuned to obtain the second communication link.

7. The control method for a dual-band satellite base station system according to claim 1, characterized in that, Based on the current environmental information, dynamic link allocation processing is performed on the data to be transmitted in the first and second communication links to obtain the link allocation results, including: Obtain the first channel quality parameters corresponding to the first communication link, wherein the first channel quality parameters include the signal strength and bit error rate of the current communication link; Determine the rain attenuation index based on current environmental information; Based on the current environmental information and the first channel quality parameters, the allocation weights of various types of data to be transmitted between the first communication link and the second communication link are dynamically adjusted to obtain the link allocation result.

8. The control method for a dual-band satellite base station system according to claim 7, characterized in that, Based on the current environmental information and the first channel quality parameters, the allocation weights of various types of data to be transmitted between the first and second communication links are dynamically adjusted to obtain the link allocation results, including: When the signal strength of the first communication link is detected to be less than a preset strength threshold, and the bit error rate and / or rain attenuation index is higher than the corresponding preset threshold, the transmission weight of the data to be transmitted on the second communication link is increased, and at least a portion of the data to be transmitted on the first communication link is switched to the second communication link for transmission. The channel quality of the first communication link is monitored in real time. When the signal strength of the first communication link is detected to be greater than a preset strength threshold, and the bit error rate and / or rain attenuation index is higher than the corresponding preset threshold, the data to be transmitted that was previously switched from the first communication link to the second communication link is switched back to the first communication link for transmission, and the link allocation result is output in real time.

9. A control device for a dual-band satellite base station system, characterized in that, include: The acquisition module is used to acquire the current location information, environmental information, and type of data to be transmitted from the satellite base station. The processing module is configured to determine the first and second communication frequency bands required for transmitting the data according to the type of data to be transmitted; perform satellite alignment processing on the first antenna corresponding to the first communication frequency band and the second antenna corresponding to the second communication frequency band according to the current location information of the satellite base station, respectively, to obtain a first communication link and a second communication link; perform dynamic allocation processing of the communication link to be transmitted on the first and second communication links according to the current environmental information, to obtain a link allocation result; and perform communication transmission of the data to be transmitted with the target network based on the first and / or second communication links in the link allocation result.

10. A dual-band satellite base station system, characterized in that, include: The system includes a control device and a dual-band transceiver, a BeiDou positioning module, an azimuth drive module, an elevation drive module, and a polarization drive module, all electrically connected to the control device. The dual-band transceiver is used for receiving and transmitting signals from the first and second communication links. The BeiDou positioning module is used to acquire the current location information of the satellite base station. The azimuth drive module, elevation drive module, and polarization drive module are used to adjust the spatial pointing and polarization angles of the antennas corresponding to the first and second communication frequency bands during satellite alignment. The control device is the control device for the dual-band satellite base station system as described in claim 9.

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