Radiation source positioning method and device, electronic equipment and storage medium

Abstract

The invention provides a radiation source positioning method and device, electronic equipment and a storage medium, radio frequency signals are simultaneously transmitted to a main satellite and an adjacent satellite module through radiation source equipment, and the radio frequency signals are respectively processed and then transmitted to a receiving station module. And the receiving station uses an adjacent satellite interference suppression algorithm to accurately distinguish and weaken interference signals from adjacent satellites, so that the recognition rate and the purity of target signals are remarkably improved. On the basis, a passive positioning algorithm is combined, and the position of the radiation source can be accurately calculated only according to the received first channelized signal and the signal subjected to interference suppression processing. The signal processing capability in a complex electromagnetic environment is enhanced, and accurate positioning of the radiation source can be stably realized even under a strong interference condition.

Description

Technical Field

[0001] The present application relates to the field of radio positioning technology, and in particular to a method, device, electronic device and storage medium for positioning a radiation source. Background Art

[0002] In order to ensure communication security and management, it is necessary to locate the radiation source in satellite communication scenarios. However, due to the directivity of the antenna, the RF signal emitted by the radiation source is mainly concentrated in the direction of the main satellite, and the target radiation signal strength received by the neighboring satellite is much smaller than that of the main satellite; in other words, the target signal strength on the neighboring satellite is very weak. At the same time, as a general satellite, the neighboring satellite has its own communication services. When its own communication signal overlaps with the signal emitted by the target radiation source in the frequency domain, the communication signal becomes a strong interference signal relative to the signal emitted by the target radiation source.

[0003] Based on the above situation, the presence of strong interference signals will lead to the failure of target signal extraction, and the location of the radiation source will not be achieved. Summary of the invention

[0004] In view of this, the purpose of the present application is to propose a radiation source positioning method, device, electronic device and storage medium to solve the above-mentioned technical problems.

[0005] Based on the above purpose, the first aspect of the present application provides a method for positioning a radiation source, which is applied to a positioning system for a radiation source. The system includes a radiation source device, a main satellite, an adjacent satellite module, and a receiving station module. The method includes: The radiation source device sends a radio frequency signal to the main satellite and sends a radio frequency signal to the adjacent satellite module; The main satellite performs channel processing on the received radio frequency signal to obtain a first channelized signal, and transmits the first channelized signal to the receiving station module; The adjacent satellite module performs channel processing on the received radio frequency signal to obtain a second channelized signal, and transmits the second channelized signal to the receiving station module; The receiving station module performs interference suppression processing through a neighboring satellite interference suppression algorithm based on the received first channelized signal and the received second channelized signal to obtain an interference suppression processing signal, and performs positioning processing through a passive positioning algorithm based on the received first channelized signal and the interference suppression processing signal to obtain the position of the radiation source device.

[0006] Based on the same inventive concept, the second aspect of the present application provides a radiation source positioning device, the device is arranged in a radiation source positioning system, the system includes a radiation source device, a main satellite, an adjacent satellite module and a receiving station module, the device includes: A radiation source device configured to send a radio frequency signal to a primary satellite and to send a radio frequency signal to an adjacent satellite module; The main satellite is configured to perform channel processing on the received radio frequency signal to obtain a first channelized signal, and transmit the first channelized signal to the receiving station module; The adjacent satellite module is configured to perform channel processing on the received radio frequency signal to obtain a second channelized signal, and transmit the second channelized signal to the receiving station module; The receiving station module is configured to perform interference suppression processing through a neighboring satellite interference suppression algorithm based on the received first channelized signal and the received second channelized signal to obtain an interference suppression processing signal, and perform positioning processing through a passive positioning algorithm based on the received first channelized signal and the interference suppression processing signal to obtain the position of the radiation source device.

[0007] Based on the same inventive concept, the third aspect of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor implements the method described in the first aspect above when executing the computer program.

[0008] Based on the same inventive concept, the fourth aspect of the present application provides a non-transitory computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable a computer to execute the method described in the first aspect above.

[0009] As can be seen from the above, the radiation source positioning method, device, electronic device and storage medium provided by the present application transmit radio frequency signals to the main satellite and the adjacent satellite module at the same time through the radiation source device, and the two are processed separately and transmitted to the receiving station module. The receiving station uses the neighboring satellite interference suppression algorithm to accurately distinguish and weaken the interference signals from the adjacent satellites, significantly improving the recognition rate and purity of the target signal. On this basis, combined with the passive positioning algorithm, the position of the radiation source can be accurately calculated based only on the received first channelized signal and the signal after interference suppression processing. It not only enhances the signal processing capability in complex electromagnetic environments, but also ensures that the precise positioning of the radiation source can be stably achieved even under strong interference conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1A schematic diagram of a satellite passive positioning scenario in an embodiment of the present application; Figure 2 A schematic diagram of a common satellite passive positioning data collection and processing process in an embodiment of the present application; Figure 3 A schematic diagram of a neighboring satellite interference signal according to an embodiment of the present application; Figure 4 A flowchart of a method for locating a radiation source according to an embodiment of the present application; Figure 5 This is a schematic diagram of the satellite passive positioning heterodyne data collection and processing process according to an embodiment of the present application; Figure 6 This is a schematic diagram of the inter-frequency acquisition process of an independent RF receiving channel according to an embodiment of the present application; Figure 7 This is a schematic diagram of an independent channelized channel frequency acquisition process according to an embodiment of the present application; Figure 8 This is a schematic diagram of setting the main neighbor 1 signal group acquisition target according to an embodiment of the present application; Fig. 9 This is a schematic diagram of setting the main neighbor 2 signal group acquisition target according to an embodiment of the present application; Fig.10 A schematic diagram of two target signals for the primary satellite of the embodiment of the present application; Fig.11 A schematic diagram of different-frequency acquisition of a target signal according to an embodiment of the present application; Fig.12 This is a schematic diagram of different-frequency acquisition of another target signal according to an embodiment of the present application; Fig.13 A schematic diagram of a satellite positioning scenario including a reference station according to an embodiment of the present application; Fig.14 A schematic diagram of the inter-frequency acquisition and processing process including reference signals according to an embodiment of the present application; Fig.15 This is a schematic diagram of a neighboring satellite interference signal suppression process according to an embodiment of the present application; Fig.16 This is a schematic diagram of the primary neighbor satellite signal spectrum of an embodiment of the present application; Fig.17 This is a schematic diagram of frequency domain filter coefficients of neighboring satellite 1 according to an embodiment of the present application; Fig.18 This is a schematic diagram of the frequency domain filter coefficients of Neighbor Star 2 according to an embodiment of the present application; Fig.19 This is a schematic diagram of CAF peak comparison between the primary satellite and neighboring satellite 1 signals in an embodiment of the present application; Fig. 20 This is a schematic diagram of CAF peak comparison between the primary satellite and neighboring satellite 2 signals in an embodiment of the present application; Fig.21This is a structural block diagram of a positioning device for a radiation source according to an embodiment of the present application; Fig. 22 A schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0012] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0013] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0014] It is understandable that before using the technical solutions of each embodiment of the present application, the type, scope of use, usage scenarios, etc. of the personal information involved will be informed to the user in an appropriate manner, and the user's authorization will be obtained.

[0015] For example, in response to receiving an active request from a user, a prompt message is sent to the user to clearly remind the user that the operation requested to be performed will require obtaining and using the user's personal information. Thus, the user can independently choose whether to provide personal information to the electronic device, application, server, storage medium or other software or hardware that performs the operation of the technical solution of the present application according to the prompt message.

[0016] As an optional but non-limiting implementation, in response to receiving the user's active request, the prompt information may be sent to the user in the form of a pop-up window, in which the prompt information may be presented in text form. In addition, the pop-up window may also carry a selection control for the user to choose "agree" or "disagree" to provide personal information to the electronic device.

[0017] It is understandable that the above notification and the process of obtaining user authorization are merely illustrative and do not constitute a limitation on the implementation method of this application. Other methods that meet relevant laws and regulations may also be applied to the implementation method of this application.

[0018] In the satellite communication scenario, when the radiation source sends an uplink signal to the target satellite, due to the openness of the wireless channel, in addition to the target satellite (the main satellite, i.e., the main satellite), its neighboring satellites (neighboring satellite 1, neighboring satellite 2) will also receive and forward its uplink signal. By receiving the downlink signals forwarded by the main satellite and the neighboring satellites, calculating the time difference (Time Difference Of Arrival, TDOA) and / or frequency difference (Frequency Difference Of Arrival, FDOA) of different signals arriving at the receiving station, combined with the satellite ephemeris and the coordinate information of the receiving stations (receiving station 1, receiving station 2, receiving station 3), the radiation source (i.e., the radiation source device) can be located, such as Figure 1 shown.

[0019] Because of the directivity of the antenna, the RF signal emitted by the radiation source is mainly concentrated in the direction of the main satellite, and the intensity of the target radiation signal received by the neighboring satellite is much smaller than that of the main satellite; in other words, the intensity of the target signal on the neighboring satellite is very weak. At the same time, as a general satellite, the neighboring satellite has its own communication services. When its own communication signal overlaps with the signal emitted by the target radiation source in the frequency domain, the communication signal becomes a strong interference signal relative to the signal emitted by the target radiation source. The presence of a strong interference signal will lead to the failure of target signal extraction, and the location of the radiation source cannot be achieved.

[0020] The present application provides a method for locating a radiation source, which can effectively avoid the influence of interference signals on target signal extraction and improve the success rate of target positioning.

[0021] In the satellite passive positioning scenario, taking Samsung as an example, common signal collection and processing methods are as follows: Figure 2 As shown. The primary satellite signal is received by the receiving antenna and undergoes a series of RF receiving processes such as low noise amplification and down conversion, and then channelized synchronous acquisition is performed. Channelized synchronous acquisition can be processed by the same device or by different devices. After channelized synchronous acquisition, the primary satellite signal is obtained. and neighboring satellite signals .

[0022] For subsequent TDOA / FDOA parameter estimation, the primary neighbor satellite signal usually needs to meet the following requirements: Spectrum consistency: that is, the main star signal and neighboring satellite signals The spectrum bandwidth of the primary and neighboring satellite signals is the same. The essence of primary and neighboring satellite signal acquisition is to collect the downlink signal of the target radiation signal after it is forwarded by the primary and neighboring satellites. Because the target signal is the same, it is required that the spectrum of the satellite uplink signal corresponding to the collected signal is consistent.

[0023] The sampling rate is the same: Primary Star Signal and neighboring satellite signals The sampling rates of the two satellites are the same. This is because in the process of TDOA / FDOA parameter estimation, the time domain cross-correlation calculation of the primary and neighboring satellite signals is required, which requires that the sampling rates of the primary and neighboring satellite signals must be the same, otherwise the calculation cannot be performed.

[0024] When there is an interference signal in the target signal frequency band on the neighboring satellite, such as Figure 3 As shown, the above processing method will collect the interference signal together, resulting in failure in subsequent target signal extraction.

[0025] The embodiment of the present application provides a method for locating a radiation source, in which a radiation source device simultaneously transmits radio frequency signals to a main satellite and an adjacent satellite module, and the two are processed separately and transmitted to a receiving station module. The receiving station uses a neighboring satellite interference suppression algorithm to accurately distinguish and weaken interference signals from adjacent satellites, significantly improving the recognition rate and purity of the target signal. On this basis, combined with a passive positioning algorithm, the position of the radiation source can be accurately calculated based only on the received first channelized signal and the signal after interference suppression processing. It not only enhances the signal processing capability in complex electromagnetic environments, but also ensures that the precise positioning of the radiation source can be stably achieved even under strong interference conditions.

[0026] like Figure 4 As shown, a positioning system applied to a radiation source includes a radiation source device, a main satellite, an adjacent satellite module and a receiving station module. The method of this embodiment includes: Step 101: A radiation source device sends a radio frequency signal to a main satellite and sends a radio frequency signal to an adjacent satellite module.

[0027] In this step, the radiation source device generates a radio frequency (RF) signal and sends it to a satellite called a primary satellite. The primary satellite is usually a satellite that plays a major or core role in a satellite communication or observation system. It is responsible for receiving signals from the ground or other satellites and may perform tasks such as data processing, relaying or forwarding.

[0028] In addition to the main satellite, the radiation source equipment also sends radio frequency signals to one or more adjacent satellites (i.e., adjacent satellite modules). The adjacent satellite modules here refer to other satellites or satellite components that operate in the same orbit or a similar orbit as the main satellite. These adjacent satellite modules may work with the main satellite as auxiliary, backup or extended functions to complete specific tasks.

[0029] Step 102: The main satellite performs channel processing on the received radio frequency signal to obtain a first channelized signal, and transmits the first channelized signal to the receiving station module.

[0030] In this step, after receiving the RF signal, the main satellite will perform channel processing on it. Channel processing is an important part of signal processing, which can include a series of operations such as signal filtering, demodulation, and decoding, aiming to extract useful information from the received signal while reducing or eliminating noise and interference.

[0031] In this specific scenario, the result of channel processing is to convert the original RF signal into a first channelized signal. A channelized signal refers to a signal that has been processed in a specific way (such as filtering, down-conversion, etc.) so that the signal can be reflected in a specific frequency channel or frequency band.

[0032] After completing the channel processing, the main satellite transmits the obtained first channelized signal to the receiving station module. The receiving station module is a part of the satellite communication system, which is responsible for receiving the signal from the satellite and performing further signal processing or data extraction.

[0033] This transmission process can involve signal remodulation, encoding, and passing through equipment such as a satellite transponder to ensure that the signal can be accurately transmitted to a receiving station module on the ground or on another satellite.

[0034] Step 103: The adjacent satellite module performs channel processing on the received radio frequency signal to obtain a second channelized signal, and transmits the second channelized signal to the receiving station module.

[0035] In this step, after the adjacent satellite module interprets the RF signal, it will perform channel processing on it. Channel processing is an important part of signal processing, which can include a series of operations such as signal filtering, demodulation, and decoding, aiming to extract useful information from the received signal while reducing or eliminating noise and interference.

[0036] In this specific scenario, the result of channel processing is to convert the original RF signal into a second channelized signal. A channelized signal refers to a signal that has been processed (such as filtering, down-conversion, etc.) so that the signal can be reflected in a specific frequency channel or frequency band.

[0037] After completing the channel processing, the adjacent satellite module transmits the obtained second channelized signal to the receiving station module. The receiving station module is a part of the satellite communication system, which is responsible for receiving the signal from the satellite and performing further signal processing (such as decoding, restoring the original data, etc.) or data extraction.

[0038] This step is a key link in the information transmission chain in the satellite communication system. It ensures that the signals received from the satellite can be correctly transmitted to the ground station and then used by users or other parts of the system.

[0039] In step 104, the receiving station module performs interference suppression processing by a neighboring satellite interference suppression algorithm based on the received first channelized signal and the received second channelized signal to obtain an interference suppression processed signal, and performs positioning processing by a passive positioning algorithm based on the received first channelized signal and the interference suppression processed signal to obtain the position of the radiation source device.

[0040] In this step, in wireless communication systems, especially satellite communications or dense network environments, a receiving station may receive signals from multiple transmission sources (e.g., multiple satellites or other wireless transmitters) at the same time. These signals may interfere with each other, especially when they use similar frequencies or channels. This interference is called neighboring satellite interference.

[0041] The purpose of the neighboring satellite interference suppression algorithm is to reduce or eliminate this interference, thereby improving the quality and accuracy of the received signal. This is essential to ensure the reliability and efficiency of communications.

[0042] The receiving station module first receives two channelized signals (the first channelized signal and the second channelized signal). These signals have been pre-processed, such as filtering, amplification, etc., in preparation for further digital signal processing. Then, the module applies the neighboring satellite interference suppression algorithm, which may include a variety of techniques such as adaptive filtering, beamforming, frequency domain processing, etc., to identify and reduce interference components from other transmission sources. The processed signal is called the interference suppression processed signal.

[0043] Passive positioning is a technology that determines the location of a transmitter through received signals without transmitting additional signals for positioning. It is widely used in military reconnaissance, air traffic management, wireless communication network optimization and other fields.

[0044] Through the passive positioning algorithm, the receiving station module can determine the location of the radiation source that generates the received signal. This is crucial for tasks such as tracking targets and monitoring network performance.

[0045] After the neighboring satellite interference suppression processing, the receiving station module uses the first channelized signal (which may still contain some useful information, although it may have been subjected to interference suppression processing) and the interference suppression processed signal (a cleaner signal) as input to apply a passive positioning algorithm. The algorithm may be based on multiple parameters such as Time Difference Of Arrival (TDOA), Angle of Arrival (AOA), Received Signal Strength Indication (RSSI), etc., combined with data from multiple receiving stations (if available), to determine the three-dimensional position of the radiator.

[0046] In addition, the radiation source can be accurately located by calculating the time difference (TDOA) and / or frequency difference (FDOA) between different signals arriving at the receiving station and combining the satellite ephemeris and receiving station coordinate information.

[0047] For example, TDOA positioning technology is used to determine the location of the transmitting source by measuring the time difference between the signal reaching different receiving stations. The basic principle is to use the speed of electromagnetic waves to calculate the distance difference and find the intersection of the signal source through the data of at least three receiving stations. These intersections are the possible locations of the transmitting source.

[0048] The implementation process is as follows: Each receiving station receives the signal from the radiation source simultaneously.

[0049] The receiving station uses a high-precision time synchronization device to measure the arrival time of the signal and calculate the time difference between the signal arriving at different receiving stations.

[0050] Based on the speed of electromagnetic waves (usually assumed to be the speed of light) and the time difference, the distance difference between the signal source and different receiving stations is calculated.

[0051] Using the distance difference information measured by at least three receiving stations, the three-dimensional position of the signal source (i.e., the radiation source device) is calculated through geometric methods (such as the hyperbolic positioning method).

[0052] In addition, FDOA positioning technology can also be applied to determine the location of the transmitting source by measuring the frequency difference of the signal reaching different receiving stations. The basic principle is that when there is relative motion between the transmitting source and the receiving station, the Doppler effect will occur during the propagation of the signal, resulting in the received signal frequency being different from the transmitting frequency. By measuring the frequency difference of the signals received at different receiving stations, the rate of change of the distance between the signal source and different receiving stations can be calculated, and then the location of the signal source can be determined.

[0053] The implementation process is as follows: Each receiving station simultaneously receives the signal from the radiating source and measures the frequency of the signal.

[0054] The receiving station uses a high-precision frequency measurement device to calculate the frequency difference between the signals arriving at different receiving stations.

[0055] Based on the Doppler effect principle and frequency difference, the rate of change of distance between the signal source and different receiving stations is calculated.

[0056] Combining the coordinate information of the receiving station and the satellite ephemeris data, the three-dimensional position and speed of the signal source (i.e., the radiation source device) are determined through complex mathematical calculations (such as the least squares method, pseudo-linear method, etc.).

[0057] In addition, when implementing TDOA and FDOA positioning, the satellite ephemeris provides the precise location information of the satellite at a specific point in time, which is essential for calculating the path length and delay of the signal during propagation. The receiving station coordinate information is used to determine the precise location of the receiving station on the surface of the earth, so that the location of the signal source relative to the receiving station can be accurately calculated.

[0058] Through the above scheme, the RF signal is transmitted to the main satellite and the adjacent satellite module at the same time through the radiation source device, and the two are processed and transmitted to the receiving station module. The receiving station uses the neighboring satellite interference suppression algorithm to accurately distinguish and weaken the interference signal from the adjacent satellite, which significantly improves the recognition rate and purity of the target signal. On this basis, combined with the passive positioning algorithm, the position of the radiation source can be accurately calculated based only on the received first channelized signal and the signal after interference suppression processing. It not only enhances the signal processing capability in complex electromagnetic environments, but also ensures that the radiation source can be accurately positioned even under strong interference conditions.

[0059] In some embodiments, step 102 includes: Step A1: The main satellite performs channel processing on the received radio frequency signal using a preset first channelized channel to obtain a first sub-channelized processed signal.

[0060] Step A2: The main satellite performs channel processing on the received RF signal using a preset second channelized channel to obtain a second sub-channelized processed signal, and sends the first sub-channelized processed signal and the second sub-channelized processed signal to the receiving station module, wherein the first channelized signal includes the first sub-channelized processed signal and the second sub-channelized processed signal.

[0061] In the above scheme, in order to efficiently process and transmit this information, the main satellite uses channelization technology. Channelization is a technology that divides a broadband RF signal into multiple narrower sub-channels, each of which carries a portion of the information. This can improve the efficiency and flexibility of signal processing.

[0062] The main satellite is equipped with a preset first channelized channel and a second channelized channel, which may have different frequency ranges, bandwidths or other parameters to accommodate different types of signal or information requirements.

[0063] When the RF signal passes through the first channelized path, it is processed into a first sub-channelized processed signal. This process may include filtering, amplification, down-conversion, etc. to extract information within a specific frequency range.

[0064] Likewise, the radio frequency signal is processed into a second sub-channelized processed signal when passing through the second channelized path.

[0065] The processed first sub-channelized signal and the second sub-channelized signal are then sent to a receiving station module, which may be located on the surface of the earth and is responsible for further processing, decoding and extracting information from the signals.

[0066] The received radio frequency signal can be effectively divided into multiple sub-channels through channelization processing, and these sub-channelized processed signals are sent to the receiving station for further processing.

[0067] In some embodiments, the neighboring satellite module includes at least a first neighboring satellite and a second neighboring satellite.

[0068] Step 103 includes: Step B1: The first adjacent satellite performs channel processing on the received radio frequency signal using a preset third channelized channel to obtain a third sub-channelized processed signal, and sends the third sub-channelized processed signal to the receiving station module.

[0069] Step B2: The second adjacent satellite performs channel processing on the received RF signal using a preset fourth channelized processing signal to obtain a fourth sub-channelized processing signal, and sends the fourth sub-channelized processing signal to the receiving station module, wherein the second channelized signal includes a third sub-channelized processing signal and a fourth sub-channelized processing signal.

[0070] In the above scheme, the first adjacent satellite and the second adjacent satellite each receive a radio frequency signal, which may come from a transmitter on the surface of the earth, such as a mobile phone base station, a satellite communication ground station, etc., or from other satellites.

[0071] Channelization is the process of dividing the radio frequency signal into multiple smaller frequency segments (or sub-channels). The purpose of this is to more efficiently utilize spectrum resources while reducing interference between different signals.

[0072] The first adjacent satellite performs channelization processing on the received RF signal using a preset third channelization channel, which means that it divides the RF signal into multiple sub-channels according to a specific frequency allocation and filtering technology, and extracts a specific third sub-channelization processing signal therefrom.

[0073] Similarly, the second adjacent satellite uses a preset fourth channelization channel to perform channelization processing on the received radio frequency signal to obtain a fourth sub-channelization processed signal.

[0074] The processed third sub-channelized processed signal and the fourth sub-channelized processed signal are respectively sent to the receiving station module by the first adjacent satellite and the second adjacent satellite.

[0075] The receiving station module may be a fixed station on the ground or a device on a mobile vehicle, which is used to receive and process signals from the satellite.

[0076] The received RF signal can be effectively segmented and processed through channelization processing, and the processed signal is sent to the receiving station module.

[0077] In some embodiments, in step 104, the receiving station module performs interference suppression processing based on the received first channelized signal and the received second channelized signal through a neighboring satellite interference suppression algorithm to obtain an interference suppression processed signal, including: In step C1, the receiving station module groups the received first sub-channelized signal and the received third sub-channelized signal into a first signal group, and groups the received second sub-channelized signal and the received fourth sub-channelized signal into a second signal group.

[0078] Step C2, the receiving station module determines the amplitude parameters of the first signal group at different signal frequencies, determines the first target signal frequency range based on the amplitude parameters of the first signal group at different signal frequencies, and extracts the first signal group according to the first target signal frequency range to obtain a first interference suppression processing signal.

[0079] Step C3, the receiving station module determines the amplitude parameters of the second signal group at different signal frequencies, determines the second target signal frequency range based on the amplitude parameters of the second signal group at different signal frequencies, and extracts the second signal group according to the second target signal frequency range to obtain a second interference suppression processing signal, wherein the interference suppression processing signal includes a first interference suppression processing signal and a second interference suppression processing signal.

[0080] In the above scheme, the receiving station module first receives four sub-channelized processed signals: a first sub-channelized processed signal, a second sub-channelized processed signal, a third sub-channelized processed signal and a fourth sub-channelized processed signal.

[0081] Then, it combines the received first and third sub-channelized processed signals into a signal set called a first signal group.

[0082] At the same time, it combines the received second and fourth sub-channelized processed signals into another signal set called a second signal group.

[0083] The receiving station module analyzes the amplitude parameters of the first signal group at different signal frequencies. The amplitude parameters generally represent the strength or size of the signal at different frequencies.

[0084] Based on these amplitude parameters, the receiving station module can determine one or more frequency ranges in which the signal amplitude is relatively high and may contain useful information. This range is called the first target signal frequency range.

[0085] After determining the first target signal frequency range, the receiving station module will perform signal extraction on the first signal group, that is, filter out the signals within the first target signal frequency range from the first signal group to obtain the first interference suppression processed signal. This processing may include filtering, amplification and other steps, aiming to extract useful signals and suppress interference signals that are not within the target frequency range.

[0086] Similarly, the receiving station module also analyzes the amplitude parameters of the second signal group at different signal frequencies.

[0087] Based on these amplitude parameters, a second target signal frequency range is determined, and signals within this range may contain useful information in the second signal group.

[0088] Then, the receiving station module will perform signal extraction on the second signal group to obtain a second interference suppression processed signal. This processing process is also intended to extract useful signals and suppress interference.

[0089] The two signals obtained in the above process - the first interference suppression processing signal and the second interference suppression processing signal - together constitute the final interference suppression processing signal. These signals have been processed to reduce or eliminate interference signals that are not within the target frequency range, thereby improving the quality and availability of the signal.

[0090] In summary, this process effectively extracts useful information from multiple sub-channelized processed signals and suppresses interference signals through steps such as grouping, amplitude parameter analysis, target signal frequency range determination and signal extraction.

[0091] In some embodiments, the neighboring satellite module includes at least a first neighboring satellite and a second neighboring satellite, and the second channelized signal includes at least a third sub-channelized signal corresponding to the first neighboring satellite and a fourth sub-channelized signal corresponding to the second neighboring satellite.

[0092] In step 104, the receiving station module performs interference suppression processing based on the received first channelized signal and the received second channelized signal through a neighboring satellite interference suppression algorithm to obtain an interference suppression processed signal, including: Step D1: The receiving station module performs signal domain conversion processing on the received third sub-channelized processed signal through a fast Fourier transform algorithm to obtain the third sub-channelized processed signal in the frequency domain.

[0093] Step D2, the receiving station module determines the frequency of the interference signal on the first adjacent satellite, determines the first frequency domain filter coefficient based on the frequency of the interference signal on the first adjacent satellite, and performs point multiplication processing based on the first frequency domain filter coefficient and the third sub-channelized processed signal in the frequency domain to obtain a first point product processed signal.

[0094] Step D3: The receiving station module performs signal domain conversion processing based on the first point product processed signal through an inverse fast Fourier transform algorithm to obtain a first point product processed signal in the time domain.

[0095] Step D4: The receiving station module performs signal domain conversion processing on the received fourth sub-channelized processed signal through a fast Fourier transform algorithm to obtain a fourth sub-channelized processed signal in the frequency domain.

[0096] Step D5, the receiving station module determines the frequency of the interference signal on the second adjacent satellite, determines the second frequency domain filter coefficient based on the frequency of the interference signal on the second adjacent satellite, and performs point multiplication processing based on the second frequency domain filter coefficient and the fourth sub-channelized processed signal in the frequency domain to obtain a second point product processed signal.

[0097] Step D6, the receiving station module performs signal domain conversion processing based on the second point product processed signal through the inverse fast Fourier transform algorithm to obtain a second point product processed signal in the time domain, wherein the interference suppression processed signal includes the first point product processed signal in the time domain and the second point product processed signal in the time domain.

[0098] In the above scheme, the receiving station module first receives the third sub-channelized processed signal and the fourth sub-channelized processed signal. These signals are initially in the time domain (ie, the signals vary with time).

[0099] Using the Fast Fourier Transform (FFT) algorithm, the receiving station module converts the two sub-channelized processed signals from the time domain to the frequency domain. The frequency domain represents the variation of the signal with frequency.

[0100] In the frequency domain, the receiving station module determines the frequencies of the interfering signals from the first neighboring satellite and the second neighboring satellite.

[0101] Based on the frequencies of these interference signals, the receiving station module calculates the first frequency domain filter coefficient and the second frequency domain filter coefficient respectively. These filter coefficients are used to design a filter, the purpose of which is to suppress (or reduce) the components of the interference signal in the frequency domain.

[0102] The receiving station module performs point multiplication processing on the calculated frequency domain filter coefficients and the third sub-channelized processed signal and the fourth sub-channelized processed signal in the frequency domain. The point multiplication operation is to multiply each frequency component separately, and the result is two new signals: the first point multiplication processed signal and the second point multiplication processed signal. The components of the interference signal have been removed from these two signals in the frequency domain.

[0103] The receiving station module then uses the Inverse Fast Fourier Transform (IFFT) algorithm to convert the first point-product processed signal and the second point-product processed signal from the frequency domain back to the time domain. This is because most communication systems need to process signals in the time domain.

[0104] After IFFT conversion, the first point multiplication processing signal in the time domain and the second point multiplication processing signal in the time domain are obtained. These two signals are the processing results from which the interference signal components of the adjacent satellites have been removed. They constitute interference suppression processing signals, that is, the interference components in these signals have been effectively suppressed, thereby improving the quality and availability of the signals.

[0105] Through the above process, interference signals from adjacent satellites are suppressed in the satellite communication system, thereby improving communication quality and efficiency.

[0106] In some embodiments, in step D2, determining the first frequency domain filter coefficient based on the frequency of the interference signal on the first neighboring satellite includes: The receiving station module determines the first frequency domain filter coefficient based on the frequency of the interference signal on the first adjacent satellite by the following formula:

[0107] in, represents the first frequency domain filter coefficient, represents the frequency of the interfering signal on the first adjacent satellite, a first frequency in a range of frequencies representing an interfering signal on a first neighboring satellite, a second frequency in the frequency range representing an interfering signal on a first neighboring satellite, represents the number of interfering signals on the first adjacent satellite, represents the order of the interfering signal on the first adjacent satellite, Indicates the order of neighboring satellites.

[0108] In the above scheme, the frequency of the interference signal on the first adjacent satellite refers to the frequency of the signal from the nearest (or first) satellite that interferes with the receiving station. The interference signal may affect the reception and decoding of the target signal by the receiving station.

[0109] The first frequency domain filter coefficient is used to filter the received signal in the frequency domain. The filter coefficient determines which frequency signals will be retained and which will be suppressed or removed. The filter coefficient is determined based on the frequency of the interference signal, with the purpose of reducing or eliminating the impact of the interference signal.

[0110] The frequency range of the interference signal refers to the frequency interval that the interference signal may occupy, which is defined by the first frequency and the second frequency. This range is used to determine the specific value of the filter coefficient.

[0111] The number of interference signals refers to the total number of interference signals from the first adjacent satellite. This number may affect the calculation and selection of filter coefficients because optimization is required for multiple interference signals.

[0112] The order of interference signals refers to the position or number of interference signals in a certain sorting method.

[0113] The order of adjacent satellites refers to the position or number of adjacent satellites in a certain sorting method.

[0114] In summary, this description provides a method for determining a frequency domain filter coefficient based on the frequency of an interference signal from a first adjacent satellite by a receiving station module. This method takes into account the frequency range, quantity, and order of the interference signal and the order of the adjacent satellites, and aims to reduce or eliminate the impact of the interference signal by optimizing the filter coefficient.

[0115] In some embodiments, in step D5, determining the second frequency domain filter coefficient based on the frequency of the interference signal on the second adjacent satellite includes: The receiving station module determines the second frequency domain filter coefficient based on the frequency of the interference signal on the second adjacent satellite by the following formula:

[0116] in, represents the second frequency domain filter coefficient, represents the frequency of the interfering signal on the second adjacent satellite, a first frequency in a range of frequencies representing an interfering signal on a second neighboring satellite, a second frequency in the frequency range representing an interfering signal on a second neighboring satellite, represents the number of interfering signals on the second adjacent satellite, represents the order of the interfering signal on the second adjacent satellite, Indicates the order of neighboring satellites.

[0117] In the above scheme, the frequency of the interference signal on the second adjacent satellite refers to the frequency of the signal from the nearest (or first) satellite that interferes with the receiving station. The interference signal may affect the reception and decoding of the target signal by the receiving station.

[0118] The second frequency domain filter coefficient is used to filter the received signal in the frequency domain. The filter coefficient determines which frequency signals will be retained and which will be suppressed or removed. The filter coefficient is determined based on the frequency of the interference signal, with the purpose of reducing or eliminating the impact of the interference signal.

[0119] The frequency range of the interference signal refers to the frequency interval that the interference signal may occupy, which is defined by the first frequency and the second frequency. This range is used to determine the specific value of the filter coefficient.

[0120] The number of interference signals refers to the total number of interference signals from the second neighboring satellites. This number may affect the calculation and selection of filter coefficients because optimization is required for multiple interference signals.

[0121] The order of interference signals refers to the position or number of interference signals in a certain sorting method.

[0122] The order of adjacent satellites refers to the position or number of adjacent satellites in a certain sorting method.

[0123] In summary, this description provides a method for determining a frequency domain filter coefficient based on the frequency of an interference signal from a second adjacent satellite by a receiving station module. This method takes into account the frequency range, quantity, and order of the interference signal and the order of the adjacent satellites, and aims to reduce or eliminate the impact of the interference signal by optimizing the filter coefficient.

[0124] In some embodiments, the present application collects the target signal through different frequency acquisition, such as Figure 5 shown.

[0125] The key points of this application are: It is no longer required that the primary and neighboring satellites maintain the same frequency band and sampling rate, but the primary satellite and each neighboring satellite form an independent signal group; as above Figure 5 , main star signal Signal with Neighbor 1 Composed of the main neighbor 1 signal group; main satellite signal Signal with Neighbor 2 Form a main-neighbor 2 signal group; in each signal group, the main-neighbor satellite performs synchronous acquisition, and the bandwidth and sampling rate of the main-neighbor satellite signal in the group are consistent; the acquisition bandwidth and sampling rate between different signal groups can be different; Between the main star and the neighboring star In the signal group, the target signal to be collected can be flexibly selected according to the interference signal situation on the neighboring satellite, so as to avoid the influence of the interference signal on the neighboring satellite.

[0126] The above-mentioned frequency acquisition can be realized through an independent RF receiving channel, or through an independent channel This can be achieved by using the channel, such as Figure 6 and Figure 7 shown.

[0127] Regarding the previous article Figure 3 In the interference signal scenario shown in the figure, the signal group acquisition target setting for heterogeneous frequency acquisition is as follows: Figure 8 and Fig. 9 As shown in the figure, it can be seen that by selecting a suitable target signal frequency band, the influence of neighboring satellite interference signals can be effectively avoided.

[0128] It can also be seen from the above figure that for each signal group, the acquired target signal only contains part of the frequency components of the actual complete target signal. Therefore, this method implies a premise that the signal composed of part of the frequency components of the target signal has the same TDOA and FDOA as the original signal. This inference is explained as follows.

[0129] According to the Fourier transform principle, the original master satellite complete target signal can be expressed as:

[0130] here Represents the coefficients corresponding to different frequency components of the signal, is the signal strength.

[0131] Assume that the target signal passes through the neighboring satellite After forwarding, compared with the signal forwarded by the primary satellite, its TDOA and FDOA are and , then through the neighboring star The forwarded target signal can be expressed as:

[0132] Sampling part of the target signal’s frequency means that the out-of-band frequency component of the acquired signal is 0, that is:

[0133]

[0134] In the above formula, and It is the result of sampling some frequencies. It is not difficult to see from the above formula that Relative to TDOA and FDOA Relative to They are completely consistent, that is, the signal acquired by partial frequency acquisition does not bring any changes to TDOA and FDOA.

[0135] The heterodyne signal acquisition method proposed in this application can also be applied to the case where there are multiple target signals. Fig.10 For example, if a known radiation source sends out two signals, but there are interference signals on the neighboring satellites, which overlap with one of the target signals in the frequency domain. In this case, the existing signal acquisition method cannot collect effective primary neighbor satellite signals.

[0136] By adopting the different-frequency acquisition method proposed in this application, the two targets are respectively combined with the neighboring satellite 1 and neighboring satellite 2 signals to form a signal group, which can avoid the influence of interference signals and realize effective data acquisition. Fig.11 and Fig.12 shown.

[0137] In satellite passive positioning scenarios, in order to improve positioning accuracy, a reference station with known coordinates is usually introduced to calibrate the TDOA and FDOA of the target signal by calculating the TDOA and FDOA of the reference signal. Fig.13 shown.

[0138] In the scenario with a reference station, the extraction of the reference signal is exactly the same as the extraction of the target signal. Therefore, the heterodyne signal acquisition method proposed in this application is also applicable to the acquisition and processing of the reference signal. Fig.14 shown.

[0139] In addition, the present application can effectively suppress the influence of interference signals on target signal extraction and improve the success rate of target positioning by suppressing interference signals from neighboring satellites.

[0140] The neighboring satellite interference signal suppression method proposed in this application is as follows: Fig.15 As shown in the figure, the number of neighboring satellite signals is 2. In actual applications, the number of neighboring satellites will vary depending on the application scenario, but the processing method is consistent.

[0141] The primary satellite signal is received by the receiving antenna and undergoes a series of RF reception processing such as low noise amplification and down conversion, and then channelized synchronous acquisition is performed. Channelized synchronous acquisition can be processed by the same device or by different devices. After channelized synchronous acquisition, the primary satellite signal is obtained. and neighboring satellite signals ,here Corresponding to different neighboring satellites; the sampling rates of the primary neighboring satellite signals are the same, and the signal start times are the same (or very close).

[0142] Neighboring satellite interference signal suppression is achieved by three steps: Fast Fourier Transform (FFT), frequency domain filtering and Inverse Fast Fourier Transform (IFFT), which are described as follows.

[0143] FFT transform: For neighboring satellite signals, first perform FFT transformation to convert the signal from time domain to frequency domain:

[0144] here Indicates the number of neighboring satellite signals.

[0145] Frequency domain filtering: For each neighboring satellite signal, a frequency domain filter is constructed, and the filter stop band corresponds to the spectrum of the interference signal. There is interference signals, the start and end frequencies of each interference signal are and , then the frequency domain filter coefficients are:

[0146] The operation corresponding to frequency domain filtering is the dot product of the frequency domain signal:

[0147] here Indicates the signal length.

[0148] IFFT transform: After the neighboring satellite signal is filtered in the frequency domain, it needs to be transformed back to the time domain to facilitate the subsequent TDOA / FDOA parameter estimation. The transformation from the frequency domain to the time domain is achieved through IFFT:

[0149] Example: Assume that the signal spectrum of the primary satellite and neighboring satellites 1 and 2 is as shown in the figure below. Fig.16 It can be seen that within the primary satellite signal band, both neighboring satellites 1 and 2 have interference signals.

[0150] The signals of the primary and neighboring satellites are received and collected synchronously, with the collection time being 1 second and the sampling rate being , corresponding to the main neighbor satellite signal length is A sample point.

[0151] The frequency domain filter coefficients of neighboring satellite 1 and neighboring satellite 2 are set as follows: Fig.17 and Fig.18 As shown, the filter coefficient corresponding to the interference signal spectrum is 0.

[0152] The signal-to-noise ratio of the target signal on the primary satellite is set to 10 dB, and the signal-to-noise ratio of the target signal on neighboring satellites 1 and 2 is set to -40 dB. The target signal is detected using the Cross Ambiguity Function (CAF) method, and the results are as follows: Fig.19 and Fig. 20 shown.

[0153] In the above figure, the point with an x-coordinate of 100 is the effective CAF value when the target signal and the neighboring satellite signal are aligned in time. As can be seen from the figure, if the correlation calculation is performed directly on the main neighboring satellite, the obtained CAF value does not have the correct peak value, and the target signal cannot be extracted; after the neighboring satellite interference signal is suppressed by the scheme of the present application, the obtained CAF peak value is 4~5dB higher than the direct cross-correlation, and an obvious effective CAF peak value can be seen. It can be seen that the neighboring satellite interference signal suppression method proposed in the present application can effectively improve the detection rate of the target signal, thereby improving the success rate of target positioning in the radiation source satellite positioning scenario.

[0154] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the method.

[0155] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0156] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a positioning device for a radiation source.

[0157] refer to Fig.21 , the positioning device of the radiation source, the device is arranged in the positioning system of the radiation source, the system includes a radiation source device, a main satellite, an adjacent satellite module and a receiving station module, the device includes: The radiation source device 2101 is configured to send a radio frequency signal to a main satellite and send a radio frequency signal to an adjacent satellite module; The primary satellite 2102 is configured to perform channel processing on the received radio frequency signal to obtain a first channelized signal, and transmit the first channelized signal to the receiving station module; The adjacent satellite module 2103 is configured to perform channel processing on the received radio frequency signal to obtain a second channelized signal, and transmit the second channelized signal to the receiving station module; The receiving station module 2104 is configured to perform interference suppression processing based on the received first channelized signal and the received second channelized signal through a neighboring satellite interference suppression algorithm to obtain an interference suppression processed signal, and perform positioning processing based on the received first channelized signal and the interference suppression processed signal through a passive positioning algorithm to obtain the position of the radiation source device.

[0158] For the convenience of description, the above device is described in terms of functions divided into various modules. Of course, when implementing the present application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0159] The device of the above embodiment is used to implement the positioning device method of the corresponding radiation source in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0160] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for positioning a radiation source of any of the above-mentioned embodiments is implemented.

[0161] Fig. 22 A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 in the device.

[0162] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0163] The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

[0164] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

[0165] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0166] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010 , the memory 1020 , the input / output interface 1030 , and the communication interface 1040 ).

[0167] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

[0168] The electronic device of the above embodiment is used to implement the positioning device method of the corresponding radiation source in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0169] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a non-transitory computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable a computer to execute the method of positioning a radiation source in any of the above embodiments.

[0170] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0171] The computer instructions stored in the storage medium of the above embodiments are used to enable a computer to execute the method for positioning a radiation source of any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0172] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of the above embodiments of the present application, which are not provided in detail for the sake of simplicity.

[0173] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power / ground connections to the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device may be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which the embodiments of the present application are to be implemented (that is, these details should be fully within the scope of understanding of those skilled in the art). Where specific details (e.g., circuits) are set forth to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or with changes in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0174] Although the present application has been described in conjunction with specific embodiments of the present application, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the discussed embodiments.

[0175] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A method for locating a radiation source, characterized in that: A positioning system applied to a radiation source, the system comprising a radiation source device, a main satellite, an adjacent satellite module and a receiving station module, the method comprising: The radiation source device sends a radio frequency signal to the main satellite and sends a radio frequency signal to the adjacent satellite module; The main satellite performs channel processing on the received radio frequency signal to obtain a first channelized signal, and transmits the first channelized signal to the receiving station module; The adjacent satellite module performs channel processing on the received radio frequency signal to obtain a second channelized signal, and transmits the second channelized signal to the receiving station module; The receiving station module performs interference suppression processing through a neighboring satellite interference suppression algorithm based on the received first channelized signal and the received second channelized signal to obtain an interference suppression processing signal, and performs positioning processing through a passive positioning algorithm based on the received first channelized signal and the interference suppression processing signal to obtain the position of the radiation source device.

2. The method according to claim 1, characterized in that The main satellite performs channel processing on the received radio frequency signal to obtain a first channelized signal, and transmits the first channelized signal to the receiving station module, including: The main satellite performs channel processing on the received radio frequency signal using a preset first channelized channel to obtain a first sub-channelized processed signal; The main satellite performs channel processing on the received radio frequency signal using a preset second channelized channel to obtain a second sub-channelized processed signal, and sends the first sub-channelized processed signal and the second sub-channelized processed signal to the receiving station module, wherein the first channelized signal includes the first sub-channelized processed signal and the second sub-channelized processed signal.

3. The method according to claim 2, characterized in that The neighboring satellite module includes at least a first neighboring satellite and a second neighboring satellite; The adjacent satellite module performs channel processing on the received radio frequency signal to obtain a second channelized signal, and transmits the second channelized signal to the receiving station module, including: The first adjacent satellite performs channel processing on the received radio frequency signal using a preset third channelized channel to obtain a third sub-channelized processed signal, and sends the third sub-channelized processed signal to the receiving station module; The second adjacent satellite performs channel processing on the received radio frequency signal using a preset fourth channelized processing signal to obtain a fourth sub-channelized processing signal, and sends the fourth sub-channelized processing signal to the receiving station module, wherein the second channelized signal includes a third sub-channelized processing signal and a fourth sub-channelized processing signal.

4. The method according to claim 3, characterized in that The receiving station module performs interference suppression processing based on the received first channelized signal and the received second channelized signal through a neighboring satellite interference suppression algorithm to obtain an interference suppression processing signal, including: The receiving station module forms a first signal group with the received first sub-channelized processed signal and the received third sub-channelized processed signal, and forms a second signal group with the received second sub-channelized processed signal and the received fourth sub-channelized processed signal; The receiving station module determines the amplitude parameters of the first signal group at different signal frequencies, determines the first target signal frequency range based on the amplitude parameters of the first signal group at different signal frequencies, and performs signal extraction on the first signal group according to the first target signal frequency range to obtain a first interference suppression processing signal; The receiving station module determines the amplitude parameters of the second signal group at different signal frequencies, determines the second target signal frequency range based on the amplitude parameters of the second signal group at different signal frequencies, and extracts the second signal group according to the second target signal frequency range to obtain a second interference suppression processing signal, wherein the interference suppression processing signal includes a first interference suppression processing signal and a second interference suppression processing signal.

5. The method according to claim 1, characterized in that The neighboring satellite module includes at least a first neighboring satellite and a second neighboring satellite, and the second channelized signal includes at least a third sub-channelized processed signal corresponding to the first neighboring satellite and a fourth sub-channelized processed signal corresponding to the second neighboring satellite; The receiving station module performs interference suppression processing based on the received first channelized signal and the received second channelized signal through a neighboring satellite interference suppression algorithm to obtain an interference suppression processing signal, including: The receiving station module performs signal domain conversion processing on the received third sub-channelized processed signal through a fast Fourier transform algorithm to obtain the third sub-channelized processed signal in the frequency domain; The receiving station module determines the frequency of the interference signal on the first adjacent satellite, determines a first frequency domain filter coefficient based on the frequency of the interference signal on the first adjacent satellite, and performs a point multiplication process based on the first frequency domain filter coefficient and the third sub-channelized processed signal in the frequency domain to obtain a first point multiplication processed signal; The receiving station module performs signal domain conversion processing based on the first point-product processed signal through an inverse fast Fourier transform algorithm to obtain a first point-product processed signal in the time domain; The receiving station module performs signal domain conversion processing on the received fourth sub-channelized processed signal through a fast Fourier transform algorithm to obtain a fourth sub-channelized processed signal in the frequency domain; The receiving station module determines the frequency of the interference signal on the second adjacent satellite, determines a second frequency domain filter coefficient based on the frequency of the interference signal on the second adjacent satellite, and performs a point multiplication process based on the second frequency domain filter coefficient and the fourth sub-channelized processed signal in the frequency domain to obtain a second point multiplication processed signal; The receiving station module performs signal domain conversion processing based on the second point product processed signal through the inverse fast Fourier transform algorithm to obtain a second point product processed signal in the time domain, wherein the interference suppression processed signal includes the first point product processed signal in the time domain and the second point product processed signal in the time domain.

6. The method according to claim 5, characterized in that The determining of the first frequency domain filter coefficient based on the frequency of the interference signal on the first adjacent satellite comprises: The receiving station module determines the first frequency domain filter coefficient based on the frequency of the interference signal on the first adjacent satellite by the following formula: in, represents the first frequency domain filter coefficient, represents the frequency of the interfering signal on the first adjacent satellite, a first frequency in a range of frequencies representing an interfering signal on a first neighboring satellite, a second frequency in the frequency range representing an interfering signal on a first neighboring satellite, represents the number of interfering signals on the first adjacent satellite, represents the order of the interfering signal on the first adjacent satellite, Indicates the order of neighboring satellites.

7. The method according to claim 5, characterized in that The determining of the second frequency domain filter coefficient based on the frequency of the interference signal on the second adjacent satellite comprises: The receiving station module determines the second frequency domain filter coefficient based on the frequency of the interference signal on the second adjacent satellite by the following formula: in, represents the second frequency domain filter coefficient, represents the frequency of the interfering signal on the second adjacent satellite, a first frequency in a range of frequencies representing an interfering signal on a second neighboring satellite, a second frequency in the frequency range representing an interfering signal on a second neighboring satellite, represents the number of interfering signals on the second adjacent satellite, represents the order of the interfering signal on the second adjacent satellite, Indicates the order of neighboring satellites.

8. A radiation source positioning device, characterized in that: The device is arranged in a positioning system of a radiation source, the system comprising a radiation source device, a main satellite, an adjacent satellite module and a receiving station module, and the device comprises: A radiation source device configured to send a radio frequency signal to a primary satellite and to send a radio frequency signal to an adjacent satellite module; The main satellite is configured to perform channel processing on the received radio frequency signal to obtain a first channelized signal, and transmit the first channelized signal to the receiving station module; The adjacent satellite module is configured to perform channel processing on the received radio frequency signal to obtain a second channelized signal, and transmit the second channelized signal to the receiving station module; The receiving station module is configured to perform interference suppression processing through a neighboring satellite interference suppression algorithm based on the received first channelized signal and the received second channelized signal to obtain an interference suppression processing signal, and perform positioning processing through a passive positioning algorithm based on the received first channelized signal and the interference suppression processing signal to obtain the position of the radiation source device.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the program, the method according to any one of claims 1 to 7 is implemented.

10. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: The computer instructions are used to enable a computer to execute the method according to any one of claims 1 to 7.

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