Satellite communication devices, mobile devices and communication systems

Abstract

The present application is applicable to the field of satellite communications and provides a satellite communication device, mobile device, and communication system, wherein the satellite communication device includes a first signal receiving unit, a signal processing unit, and a first signal transmitting unit; the first signal receiving unit is used to receive satellite signals, process satellite signals, and send the processed satellite signals to the signal processing unit; the signal processing unit is used to receive the processed satellite signals, and the signal processing unit is also used to process data to be transmitted, send the processed data to be transmitted to the first signal transmitting unit, and adjust the transmission power of the first signal transmitting unit to a first power, the first power being less than a preset power threshold; the first signal transmitting unit is used to process the data to be transmitted and transmit the processed data to be transmitted at the first power. Since the present satellite communication device can adjust the transmission power of the first signal transmitting unit to the first power, the present solution can reduce the transmission power consumption of the satellite communication device.

Description

Technical Field

[0001] The present application relates to the field of satellite communications, and in particular to a satellite communication device, a mobile device, and a communication system. Background Art

[0002] RDSS (Radio Determination Satellite System) technology is a type of satellite positioning technology and a key feature of the North Satellite Navigation System. Unlike the passive positioning of RNSS (Radio Navigation Satellite System), RDSS technology employs active positioning. Because RDSS requires active communication with GEO satellites over 35,000 kilometers above Earth, ensuring successful communication requires high transmit power consumption from satellite communication devices. This high transmit power places high demands on the performance of the signal transmission unit within the satellite communication device, as well as the power supply capacity required during transmission. Summary of the Invention

[0003] In view of this, the embodiments of the present application provide a satellite communication device, a receiver and a positioning system to solve the technical problem that the existing satellite communication device has high transmission power consumption, resulting in high performance requirements for the signal transmission unit in the satellite communication device and high requirements for the power supply capacity of the power supply at the moment of transmission.

[0004] In a first aspect, an embodiment of the present application provides a satellite communication device, comprising a first signal receiving unit, a signal processing unit, and a first signal transmitting unit;

[0005] The first signal receiving unit is connected to the signal processing unit, and is used to receive satellite signals, process the satellite signals, and send the processed satellite signals to the signal processing unit;

[0006] The signal processing unit is connected to the first signal transmitting unit, and is configured to receive the processed satellite signal; the signal processing unit is further configured to receive data to be transmitted, process the data to be transmitted, and send the processed data to be transmitted to the first signal transmitting unit, and adjust the transmission power of the first signal transmitting unit to a first power, where the first power is less than a preset power threshold;

[0007] The first signal transmitting unit is configured to process the data to be transmitted and transmit the processed data to be transmitted at the first power.

[0008] Optionally, the signal processing unit includes a radio frequency unit, a baseband unit and a power supply unit;

[0009] The power supply unit is connected to the radio frequency unit and the baseband unit, and is used to supply power to the radio frequency unit and the baseband unit;

[0010] The radio frequency unit is connected to the first signal receiving unit and the baseband unit; the radio frequency unit is used to receive the processed satellite signal, demodulate the processed satellite signal, and send the demodulated satellite signal to the baseband unit;

[0011] The baseband unit is used to receive the demodulated satellite signal; the baseband unit is also used to receive the data to be transmitted, encode the data to be transmitted, perform phase shift keying modulation on the encoded data to be transmitted to obtain the modulated data to be transmitted, and send the modulated data to be transmitted to the radio frequency unit;

[0012] The radio frequency unit is also connected to the first signal transmitting unit, and is further used to receive the modulated data to be transmitted, and modulate the frequency band of the data to be transmitted modulated by the baseband unit into a target frequency band, and modulate the signal strength of the data to be transmitted into a target signal strength, to obtain the processed data to be transmitted, and also send the processed data to be transmitted to the first signal transmitting unit.

[0013] Optionally, the baseband unit is further configured to control the amount of information of the data to be sent, control the data transmission rate of the data to be sent, and control the signal strength of the data to be sent by adjusting the modulation parameters of the radio frequency unit.

[0014] Optionally, the radio frequency unit is specifically used to demodulate the processed satellite signal into a low-frequency signal; the radio frequency unit is also specifically used to modulate the frequency band of the data to be transmitted after being modulated by the baseband unit into a target high-frequency band.

[0015] Optionally, the baseband unit is further used to detect the amount of information of the satellite signal. When the amount of information of the satellite signal exceeds a preset threshold, a prompt signal is generated and the prompt signal is sent to the radio frequency unit; the prompt signal is used to prompt that the amount of information of the satellite signal exceeds the preset threshold.

[0016] Optionally, the first signal receiving unit includes a first antenna, a low noise amplifier and a first surface acoustic wave filter;

[0017] The first antenna is connected to the low noise amplifier, and the first antenna is used to receive the satellite signal and send the satellite signal to the low noise amplifier;

[0018] The low-noise amplifier is connected to the first surface acoustic wave filter, and is used to amplify the satellite signal and send the amplified satellite signal to the first surface acoustic wave filter;

[0019] The first surface acoustic wave filter is connected to the radio frequency unit, and is used to filter the satellite signal after the signal amplification processing, and send the satellite signal after the signal amplification processing and the filtering processing to the radio frequency unit.

[0020] Optionally, the first signal transmitting unit includes a second surface acoustic wave filter, a driving circuit, a power amplifier and a second antenna;

[0021] The second surface acoustic wave filter is connected to the radio frequency unit and the power amplifier, and is used to filter the demodulated signal to be transmitted and send the filtered signal to be transmitted to the power amplifier;

[0022] The driving circuit is connected to the power amplifier, and the driving circuit is used to drive the power amplifier to operate;

[0023] The power amplifier is connected to the second antenna, and is used to amplify the signal to be transmitted after filtering, and send the signal to be transmitted after filtering and amplification to the second antenna;

[0024] The second antenna is used to transmit the signal to be transmitted after the filtering and signal amplification processes.

[0025] Optionally, the baseband unit is also connected to the power amplifier and the driving circuit; the baseband unit is specifically used to send an enable signal to the driving circuit and the power amplifier, and the enable signal is used to control the working state of the driving circuit and the working state of the power amplifier.

[0026] In a second aspect, an embodiment of the present application provides a mobile device, comprising the satellite communication device according to any one of the first aspects and a module for acquiring data to be transmitted;

[0027] In a third aspect, an embodiment of the present application provides a communication system, comprising a communication satellite and a mobile device as described in any one of the second aspects;

[0028] The communication satellite is used to send satellite signals to the satellite communication device and receive data transmitted by the satellite communication device.

[0029] The satellite communication device, mobile device, and communication system provided by the embodiments of the present application have the following beneficial effects:

[0030] The satellite communication device provided in the embodiment of the present application includes a first signal receiving unit, a signal processing unit, and a first signal transmitting unit; the first signal receiving unit is used to receive satellite signals, process satellite signals, and send the processed satellite signals to the signal processing unit; the signal processing unit is used to receive the processed satellite signals, and the signal processing unit is also used to process data to be transmitted, send the processed data to be transmitted to the first signal transmitting unit, and adjust the transmission power of the first signal transmitting unit to a first power, the first power being less than a preset power threshold; the first signal transmitting unit is used to process the data to be transmitted and transmit the processed data to be transmitted at the first power. Since the signal processing unit in the satellite communication device can adjust the transmission power of the first signal transmitting unit to the first power, and the first power is less than the preset power threshold, the satellite communication device provided in the embodiment of the present application can reduce the transmission power of the first signal transmitting unit, thereby reducing the performance requirements for the signal transmitting unit in the satellite communication device and the power supply capacity requirements for the power supply at the moment of transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 A schematic structural diagram of a satellite communication device provided in an embodiment of the present application;

[0033] Figure 2 A schematic structural diagram of a satellite communication device provided in another embodiment of the present application;

[0034] Figure 3 A schematic structural diagram of a receiver provided in an embodiment of the present application;

[0035] Figure 4 A schematic structural diagram of a positioning system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] It should be noted that the terms used in the embodiments of the present application are only used to explain the specific embodiments of the present application and are not intended to limit the present application. In the description of the embodiments of the present application, unless otherwise specified, "multiple" refers to two or more than two, and "at least one" and "one or more" refer to one, two or more. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features.

[0037] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0038] After more than a decade of development, RDSS has reached its third generation. In the current third-generation RDSS system, the minimum standard transmission power for satellite communication devices is 2 watts (W). A higher transmission power requires higher performance from the signal transmission unit within the satellite communication device, and also places greater demands on the power supply during transmission.

[0039] Based on this, an embodiment of the present application first provides a satellite communication device to solve the technical problem that the existing satellite communication device has high transmission power consumption, resulting in high performance requirements for the signal transmission unit in the satellite communication device and high requirements for the power supply capacity of the power supply at the moment of transmission.

[0040] The satellite communication device includes a first signal receiving unit, a signal processing unit and a first signal transmitting unit; wherein the signal processing unit in the satellite communication device can adjust the transmission power of the first signal transmitting unit to a first power. Therefore, the satellite communication device provided in the embodiment of the present application can reduce the transmission power of the first signal transmitting unit, thereby reducing the performance requirements for the first signal transmitting unit and the power supply capacity requirements for the power supply unit at the moment of transmission.

[0041] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a satellite communication device provided in an embodiment of the present application. Figure 1As shown, the satellite communication device 11 may be provided in a receiver, wherein the satellite radio service used by the receiver may be RDSS.

[0042] The satellite communication device 11 may include a first signal receiving unit 111 , a signal processing unit 112 , and a first signal transmitting unit 113 .

[0043] The first signal receiving unit 111 is connected to the signal processing unit 112 , and the signal processing unit 112 is connected to the first signal transmitting unit 113 .

[0044] Specifically, the first signal receiving unit 111 is configured to receive satellite signals, process the satellite signals, and transmit the processed satellite signals to the signal processing unit 112. The satellite signals may be transmitted from a communication satellite to the satellite communication device 11. After receiving the satellite signals, the first signal receiving unit 111 may amplify and filter the satellite signals.

[0045] Specifically, the signal processing unit 112 is configured to receive processed satellite signals; the signal processing unit 112 is further configured to receive data to be transmitted, process the data to be transmitted, send the processed data to be transmitted to the first signal transmitting unit, and adjust the transmit power of the first signal transmitting unit to a first power. The first power is less than a preset power threshold, and the data to be transmitted may be data that a user desires to send.

[0046] The first power may be less than a preset power threshold. In a specific application, in order to reduce the transmission power of the first signal transmitting unit 113, the preset power threshold may be set to any value within the minimum standard transmission power (i.e., 2W) of a satellite communication device in a third-generation RDSS system. The specific value of the first power may be set based on actual needs and is not specifically limited herein.

[0047] Specifically, the first signal transmitting unit 113 is configured to process the data to be transmitted and transmit the processed data to be transmitted at a first power. After receiving the data to be transmitted, the first signal transmitting unit 113 may amplify and filter the data to be transmitted and transmit the processed data to the communication satellite.

[0048] As can be seen from the above, the satellite communication device provided in the embodiment of the present application includes a first signal receiving unit, a signal processing unit, and a first signal transmitting unit; the first signal receiving unit is used to receive satellite signals, process satellite signals, and send the processed satellite signals to the signal processing unit; the signal processing unit is used to receive the processed satellite signals, and the signal processing unit is also used to process the data to be transmitted, send the processed data to be transmitted to the first signal transmitting unit, and adjust the transmission power of the first signal transmitting unit to a first power, the first power being less than a preset power threshold; the first signal transmitting unit is used to process the data to be transmitted and transmit the processed data to be transmitted at the first power. Since the signal processing unit in the satellite communication device can adjust the transmission power of the first signal transmitting unit to the first power, and the first power is less than the preset power threshold, the satellite communication device provided in the embodiment of the present application can reduce the transmission power of the first signal transmitting unit, thereby reducing the performance requirements for the signal transmitting unit in the satellite communication device and the power supply capacity requirements for the power supply at the moment of transmission.

[0049] See also Figure 2 , Figure 2 This is a schematic diagram of the structure of a satellite communication device provided in another embodiment of the present application. Figure 2 As shown, in a possible implementation, the signal processing unit 112 may include a radio frequency unit 1121 , a baseband unit 1122 , and a power supply unit 1123 .

[0050] The power supply unit 1123 is connected to the RF unit 1121 and the baseband unit 1122 . The RF unit 1121 is connected to the first signal receiving unit 111 , the baseband unit 1122 and the first signal transmitting unit 113 .

[0051] The power supply unit 1123 may be configured to supply power to the RF unit 1121 and the baseband unit 1122 .

[0052] The radio frequency unit 1121 can be used to receive the satellite signal processed by the first signal receiving unit 111, demodulate the processed satellite signal, and send the demodulated satellite signal to the baseband unit 1122.

[0053] The baseband unit 1122 can be used to receive the demodulated satellite signal sent by the radio frequency unit 1121; the baseband unit 1122 can also be used to receive the data to be transmitted that the user wants to transmit, encode the data to be transmitted, perform phase shift keying modulation on the encoded data to be transmitted to obtain the modulated data to be transmitted, and send the modulated data to be transmitted to the radio frequency unit 1121.

[0054] The radio frequency unit 1121 can also be used to receive the modulated data to be transmitted sent by the baseband unit 1122, and modulate the frequency band of the data to be transmitted modulated by the baseband unit 1122 into a target frequency band, and modulate the signal strength of the data to be transmitted into a target signal strength to obtain the processed data to be transmitted, and also send the processed data to be transmitted to the first signal transmitting unit 1123.

[0055] In the embodiment of the present application, the signal processing unit 112 may be further configured to adjust the transmission power of the first signal transmitting unit 113 to the first power.

[0056] In a possible implementation, the baseband unit 1122 may adjust the transmission power of the first signal transmitting unit 113 to the first power by controlling the information amount of the data to be transmitted, controlling the data transmission rate of the data to be transmitted, and controlling the signal strength of the data to be transmitted.

[0057] Specifically, the baseband unit 1122 can control the information volume and data transmission rate of the data to be transmitted by adjusting the parameters of the phase-shift keying modulation, so that the information volume of the data to be transmitted is lower than a first preset information volume threshold and the data transmission rate is lower than a preset data transmission rate threshold. The baseband unit 1122 can adjust the demodulation parameters of the RF unit 1121 before the RF unit 1121 demodulates the data to be transmitted, so that the signal strength of the data to be transmitted demodulated by the RF unit 1121 is lower than a preset signal strength threshold. The first preset information volume threshold, the preset data transmission rate threshold, and the preset signal strength threshold can all be set according to actual needs, and the specific values of the first preset information volume threshold, the preset data transmission rate threshold, and the preset signal strength threshold are not particularly limited herein.

[0058] By controlling the amount of information of the data to be sent, controlling the data transmission rate of the data to be sent, and the signal strength of the data to be sent, the transmission power of the first signal transmitting unit can be adjusted to a first power less than a preset power threshold, thereby reducing the performance requirements for the signal transmitting unit in the satellite communication device and the power supply capacity requirements for the power supply at the moment of transmission.

[0059] In this implementation, the baseband unit 1122 can also be used to detect the amount of information of the satellite signal. When the amount of information of the satellite signal exceeds a second preset information amount threshold, the baseband unit 1122 generates a prompt signal and sends the prompt signal to the radio frequency unit 1121; the prompt signal is used to indicate that the amount of information of the satellite signal exceeds the preset threshold.

[0060] In another possible implementation, the first signal receiving unit 111 may include a first antenna 1111 , a low-noise amplifier 1112 , and a first surface acoustic wave filter 1113 .

[0061] The first antenna 1111 is connected to the low noise amplifier 1112 , the low noise amplifier 1112 is connected to the first surface acoustic wave filter 1113 , and the first surface acoustic wave filter 1113 is connected to the radio frequency unit 1121 .

[0062] The first antenna 1111 is used to receive a satellite signal sent by a first device in an external system, and send the satellite signal to the low noise amplifier 1112 .

[0063] The low noise amplifier 1112 is used to amplify the satellite signal after receiving the satellite signal, and send the amplified satellite signal to the first surface acoustic wave filter 1113.

[0064] The first surface acoustic wave filter 1113 is used to filter the satellite signal after receiving the amplified signal to obtain the amplified and filtered satellite signal, and send the amplified and filtered satellite signal to the RF unit 1121.

[0065] The first signal receiving unit 111 in this implementation can receive, amplify, and filter satellite signals, and can send the amplified and filtered satellite signals to the RF unit 1121 .

[0066] In another possible implementation, the first signal transmitting unit 113 may include a second surface acoustic wave filter 1131 , a driving circuit 1132 , a power amplifier 1133 , and a second antenna 1134 .

[0067] The second surface acoustic wave filter 1131 is connected to the RF unit 1121 and the power amplifier 1133 . The driving circuit 1132 is connected to the power amplifier 1133 and the baseband unit 1122 . The power amplifier 1133 is connected to the baseband unit 1122 and the second antenna 1134 .

[0068] The second surface acoustic wave filter 1131 is used to receive the data to be transmitted after being mediated by the RF unit 1121 and to filter the mediated data to be transmitted to obtain the filtered data to be transmitted, and to send the filtered data to be transmitted to the power amplifier 1133.

[0069] The driving circuit 1132 is used to drive the power amplifier 1133 to operate.

[0070] The power amplifier 1133 is used to receive the filtered data to be transmitted sent by the second surface acoustic wave filter 1131, and perform signal amplification processing on the filtered data to be transmitted to obtain the filtered and signal amplified data to be transmitted, and send the filtered and signal amplified data to be transmitted to the second antenna 1134.

[0071] The second antenna 1134 is used to receive the data to be transmitted after filtering and signal amplification processing sent by the power amplifier 1133, and transmit the data to be transmitted after filtering and signal amplification processing to the communication satellite.

[0072] In this implementation, the baseband unit 1122 can control the operating states of the driver circuit 1132 and the power amplifier 1133. Specifically, the baseband unit 1122 can send an enable signal to the driver circuit 1132 and the power amplifier 1133, and the enable signal can control the operating states of the driver circuit 1132 and the power amplifier 1133. Exemplarily, the driver circuit 1132 and the power amplifier 1133 can further include an enable terminal, each configured to receive an enable signal sent by the baseband unit 1122; when the enable terminal of the driver circuit 1132 receives the enable signal, the driver circuit 1132 operates; when the enable terminal of the driver circuit 1132 does not receive the enable signal, the driver circuit 1132 stops operating; when the enable terminal of the power amplifier 1133 receives the enable signal, the power amplifier 1133 operates; when the enable terminal of the power amplifier 1133 does not receive the enable signal, the power amplifier 1133 stops operating.

[0073] The first signal transmitting unit 113 in this implementation can receive, amplify and filter the data to be transmitted, and send the amplified and filtered data to the communication satellite.

[0074] See also Figure 3 , Figure 3 This is a schematic diagram of the structure of a mobile device provided in an embodiment of the present application. Figure 3 As shown, the mobile device 31 may include Figure 1 or Figure 2 The satellite communication device 11 and the data acquisition module 311 to be transmitted in the corresponding embodiment. The data acquisition module 311 to be transmitted is connected to the satellite communication device 11.

[0075] The data to be transmitted acquisition module 311 is used to acquire the data to be transmitted that the user wants to transmit, and send the data to be transmitted to the satellite communication device 11 .

[0076] See also Figure 4 , Figure 4This is a schematic diagram of the structure of a communication system provided in an embodiment of the present application. Figure 4 As shown, the positioning system may include communication satellites 411 and Figure 3 The mobile device 31 in the corresponding embodiment.

[0077] Specifically, the communication satellite 411 is used to send satellite signals to the satellite communication device 11 in the mobile device 31 and receive data transmitted by the satellite communication device 11 in the mobile device 31 .

[0078] The following combination Figure 4 , the specific working principle of the communication system provided in the embodiment of the present application is described in detail.

[0079] When the mobile device 31 needs to receive a satellite signal sent by the communication satellite 411, the mobile device 31 can receive the satellite signal through the first antenna 1111 in the first signal receiving unit 111. After receiving the satellite signal, the first antenna 1111 can send the satellite signal to the low-noise amplifier 1112. After receiving the satellite signal, the low-noise amplifier 1112 can amplify the satellite signal and send the amplified satellite signal to the first surface acoustic wave filter 1113. After receiving the amplified satellite signal, the first surface acoustic wave filter 1113 filters the amplified satellite signal to obtain the amplified and filtered satellite signal, and sends the amplified and filtered satellite signal to the radio frequency unit 1121.

[0080] After receiving the satellite signal processed by the first signal receiving unit 111, the RF unit 1121 may demodulate the satellite signal and transmit the demodulated satellite signal to the baseband unit 1122. After receiving the demodulated satellite signal, the baseband unit 1122 may first detect the information volume of the satellite signal. When the baseband unit 1122 detects that the information volume of the satellite signal exceeds a second preset information volume threshold, it generates a prompt signal and transmits the prompt signal to the RF unit 1121. When the baseband unit 1122 detects that the information volume of the satellite signal does not exceed the second preset information volume threshold, it receives the satellite signal.

[0081] When the mobile device 31 needs to send data to be transmitted to the communication satellite 411, it can first obtain the data to be transmitted that the user wants to transmit through the data to be transmitted acquisition module 311, and then send the data to be transmitted to the baseband unit 1122 in the satellite communication device 11. The baseband unit 1122 can receive the data to be transmitted, encode the data to be transmitted, perform phase shift keying modulation on the encoded data to be transmitted to obtain modulated data to be transmitted, and send the modulated data to be transmitted to the radio frequency unit 1121.

[0082] The radio frequency unit 1121 can receive the modulated data to be transmitted sent by the baseband unit 1122, and modulate the frequency band of the data to be transmitted modulated by the baseband unit 1122 into a target frequency band, and modulate the signal strength of the data to be transmitted into a target signal strength to obtain the processed data to be transmitted, and also send the processed data to be transmitted to the second surface acoustic wave filter 1131 in the first signal transmitting unit 1123.

[0083] The baseband unit 1122 can adjust the transmit power of the first signal transmitting unit 113 to the first power by controlling the amount of information of the data to be transmitted, controlling the data transmission rate of the data to be transmitted, and controlling the signal strength of the data to be transmitted. Specifically, the baseband unit 1122 can control the amount of information of the data to be transmitted and the data transmission rate by adjusting parameters of phase shift keying modulation, so that the amount of information of the data to be transmitted is lower than a first preset information amount threshold and the data transmission rate is lower than a preset data transmission rate threshold. The baseband unit 1122 can adjust the demodulation parameters of the radio frequency unit 1121 before the radio frequency unit 1121 demodulates the data to be transmitted, so that the signal strength of the data to be transmitted demodulated by the radio frequency unit 1121 is lower than a preset signal strength threshold.

[0084] After receiving the data to be transmitted that has been demodulated by the RF unit 1121, the second SAW filter 1131 can filter the demodulated data to obtain filtered data to be transmitted, and then send the filtered data to the power amplifier 1133. After receiving the filtered data to be transmitted, the power amplifier 1133 amplifies the filtered data to be transmitted, obtaining filtered and amplified data to be transmitted, and then sends the filtered and amplified data to be transmitted to the second antenna 1134. After receiving the filtered and amplified data to be transmitted from the receiving power amplifier 1133, the second antenna 1134 transmits the filtered and amplified data to be transmitted to the communication satellite 411.

[0085] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0086] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0087] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A satellite communication device, characterized in that: It includes a first signal receiving unit, a signal processing unit and a first signal transmitting unit; The first signal receiving unit is connected to the signal processing unit, and is used to receive satellite signals, process the satellite signals, and send the processed satellite signals to the signal processing unit; The signal processing unit is connected to the first signal transmitting unit, and is configured to receive the processed satellite signal; the signal processing unit is further configured to receive data to be transmitted, process the data to be transmitted, and send the processed data to be transmitted to the first signal transmitting unit, and adjust the transmission power of the first signal transmitting unit to a first power, where the first power is less than a preset power threshold; The first signal transmitting unit is configured to process the data to be transmitted and transmit the processed data to be transmitted at the first power; The signal processing unit includes a radio frequency unit, a baseband unit and a power supply unit; The power supply unit is connected to the radio frequency unit and the baseband unit, and is used to supply power to the radio frequency unit and the baseband unit; The radio frequency unit is connected to the first signal receiving unit and the baseband unit; the radio frequency unit is used to receive the processed satellite signal, demodulate the processed satellite signal, and send the demodulated satellite signal to the baseband unit; The baseband unit is used to receive the demodulated satellite signal; The baseband unit is further configured to receive the data to be transmitted, encode the data to be transmitted, perform phase shift keying modulation on the encoded data to be transmitted to obtain modulated data to be transmitted, and send the modulated data to be transmitted to the radio frequency unit; The radio frequency unit is further connected to the first signal transmitting unit, and is further configured to receive the modulated data to be transmitted, modulate the frequency band of the data to be transmitted modulated by the baseband unit into a target frequency band, and modulate the signal strength of the data to be transmitted into a target signal strength, thereby obtaining the processed data to be transmitted, and further send the processed data to be transmitted to the first signal transmitting unit; The baseband unit is specifically further used to control the amount of information of the data to be transmitted, and to control the data transmission rate of the data to be transmitted, and to control the signal strength of the data to be transmitted by adjusting the modulation parameters of the radio frequency unit; the baseband unit controls the amount of information and the data transmission rate of the data to be transmitted by adjusting the parameters of the phase shift keying modulation.

2. The satellite communication device according to claim 1, wherein: The radio frequency unit is specifically used to demodulate the processed satellite signal into a low-frequency signal; the radio frequency unit is also specifically used to modulate the frequency band of the data to be transmitted after being modulated by the baseband unit into a target high-frequency band.

3. The satellite communication device according to claim 1, wherein: The baseband unit is further configured to detect the amount of information in the satellite signal, and when the amount of information in the satellite signal exceeds a preset threshold, generate a prompt signal and send the prompt signal to the radio frequency unit; the prompt signal is configured to indicate that the amount of information in the satellite signal exceeds the preset threshold.

4. The satellite communication device according to claim 1, wherein: The first signal receiving unit includes a first antenna, a low noise amplifier and a first surface acoustic wave filter; The first antenna is connected to the low noise amplifier, and the first antenna is used to receive the satellite signal and send the satellite signal to the low noise amplifier; The low-noise amplifier is connected to the first surface acoustic wave filter, and is used to amplify the satellite signal and send the amplified satellite signal to the first surface acoustic wave filter; The first surface acoustic wave filter is connected to the radio frequency unit, and is used to filter the satellite signal after the signal amplification processing, and send the satellite signal after the signal amplification processing and the filtering processing to the radio frequency unit.

5. The satellite communication device according to claim 1, wherein: The first signal transmitting unit includes a second surface acoustic wave filter, a driving circuit, a power amplifier and a second antenna; The second surface acoustic wave filter is connected to the radio frequency unit and the power amplifier, and is used to filter the demodulated signal to be transmitted and send the filtered signal to be transmitted to the power amplifier; The driving circuit is connected to the power amplifier, and the driving circuit is used to drive the power amplifier to operate; The power amplifier is connected to the second antenna, and is used to amplify the signal to be transmitted after filtering, and send the signal to be transmitted after filtering and amplification to the second antenna; The second antenna is used to transmit the signal to be transmitted after the filtering and signal amplification processes.

6. The satellite communication device according to claim 5, characterized in that The baseband unit is also connected to the power amplifier and the driving circuit; the baseband unit is specifically used to send an enable signal to the driving circuit and the power amplifier, and the enable signal is used to control the working state of the driving circuit and the working state of the power amplifier.

7. A mobile device, characterized in that: The mobile device comprises the satellite communication device according to any one of claims 1 to 6 and a module for acquiring data to be transmitted.

8. A communication system, characterized in that: comprising a communication satellite and a mobile device as claimed in claim 7; The communication satellite is used to send satellite signals to the satellite communication device and receive data transmitted by the satellite communication device.

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