A signal receiving device integrating telepathy and detection

Abstract

The present invention discloses a communication, sensing and detection integrated signal receiving device, which relates to the field of communication technology. The device includes a main receiving channel, a scanning and cancellation receiving channel, a scanning and cancellation unit, and an integrated signal processing unit. The main receiving channel uses a broadband segmented high-gain parabolic antenna to receive a mixed signal and output an intermediate frequency mixed signal; the scanning and cancellation receiving channel uses a scanning and cancellation horn antenna to receive a strong interference signal and output an intermediate frequency strong interference signal; the intermediate frequency mixed signal and the intermediate frequency strong interference signal are input into the scanning and cancellation unit, which estimates the interference component in the intermediate frequency mixed signal and completes interference cancellation based on the interference signal reconstruction; the integrated signal processing unit integrates the functions of the communication module, the sensing module, and the detection module, and supports wireless communication, spectrum sensing, and target detection in complex electromagnetic environments. The present invention can realize wireless communication, spectrum sensing, and target detection, and improve the integration capability and anti-interference capability of the signal receiving system.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a communication, sensing and detection integrated signal receiving device. Background Art

[0002] As a key branch of modern communications, wireless communication technology has made tremendous progress and development in recent decades, promoting social progress and improving people's living standards. Signal reception systems are a crucial component of communication systems, and their operational stability and reliability are crucial. Long-term, stable reception of target signals is a prerequisite for information acquisition and fundamental to ensuring the proper functioning of communication systems.

[0003] Spectrum sensing systems are important signal reception systems. They receive wireless signals transmitted by targets of interest, analyze and process the signal's characteristics in the time, frequency, and transform domains, and obtain detailed target attributes through pattern recognition and parameter analysis. Ultimately, they analyze, process, and record target characteristics, making them a crucial spectrum situational awareness system. Detection systems are specialized situational awareness systems that receive the echoes of detection waveforms emitted by the system and measure characteristics such as target distance, imaging, and speed.

[0004] Existing wireless communication, spectrum sensing, and target detection systems typically adopt a "stovetop" design, with each system functioning independently. When multiple systems collaborate to perform complex tasks, they face long interaction chains and high latency, making it difficult to meet real-time and efficient mission requirements. Communication, sensing, and detection systems share many similarities in hardware architecture and spectrum resources. A deeply integrated design for communication, sensing, and detection can more effectively utilize spectrum resources, reduce the interaction overhead between functions, and improve the real-time and efficiency of the entire system.

[0005] Furthermore, as the electromagnetic environment becomes increasingly complex, electromagnetic space is flooded with a variety of signals, such as mobile communication signals, radar detection signals, and electronic countermeasures jamming signals. These unintentional or intentional jamming signals can significantly impact the mission of satellite signal reception systems. Therefore, it is necessary to develop satellite signal reception systems with anti-interference capabilities to reduce the impact of electromagnetic interference signals on signal reception systems. Integrated design of communication, perception, and detection can achieve a self-closed anti-interference OODA loop, reduce system hardware overhead, and improve the reliability and stability of the system in performing communication, perception, and detection tasks. Summary of the Invention

[0006] The purpose of the present invention is to address the problems of single function and susceptibility to interference threats faced by current signal receiving systems, and to propose an integrated signal receiving device for communication and detection, which can realize functions such as wireless communication, spectrum sensing and target detection, improve the integration capability of the signal receiving system, and solve the problem that the existing signal receiving system cannot work normally in the face of interference, and improve the stability and reliability of the wireless signal receiving system in complex electromagnetic interference environments.

[0007] The present invention is a signal receiving device integrated with telepathy and detection, and the specific technical solution is as follows:

[0008] It includes main receiving channel, scanning offset receiving channel, scanning offset unit and integrated signal processing unit.

[0009] The main receiving channel uses a broadband segmented high-gain parabolic antenna to receive mixed signals and output intermediate frequency mixed signals;

[0010] Scanning and cancelling receiving channel, using scanning and cancelling horn antenna to receive strong interference signals, outputting intermediate frequency strong interference signals, performing interference perception of surrounding electromagnetic environment and receiving strong interference signals;

[0011] The intermediate frequency mixed signal and the intermediate frequency strong interference signal are input into the scanning cancellation unit. The scanning cancellation unit estimates the interference component in the intermediate frequency mixed signal, subtracts the estimated interference component from the intermediate frequency mixed signal, eliminates the interference component in the intermediate frequency mixed signal, improves the signal-to-interference ratio of the mixed signal, and obtains a relatively pure target signal.

[0012] The integrated signal processing unit includes an intermediate frequency processing module, a communication module, a perception module and a detection module. The intermediate frequency processing module selects the offset signal and the intermediate frequency mixed signal according to the mission requirements. The communication module, the perception module and the detection module complete wireless communication, spectrum perception and target detection in complex electromagnetic environments.

[0013] Furthermore, the main receiving channel includes a broadband segmented high-gain parabolic antenna, a first-day servo feed subsystem, multiple first low-noise amplifiers, and multiple first down-converters. The broadband segmented high-gain parabolic antenna is used to receive the mixed signal, which passes through the first-day servo feed subsystem and is input into the first low-noise amplifier and the first down-converter of the corresponding frequency band to obtain an intermediate frequency mixed signal. The main receiving channel performs frequency segmentation according to the signal characteristics to reduce internal cross interference. The scanning cancellation unit and the integrated signal processing unit select the corresponding frequency conversion output signal according to the task frequency band requirements.

[0014] Furthermore, the scanning cancellation receiving channel includes a scanning cancellation horn antenna, a second second servo feed subsystem, a second low noise amplifier and a second down converter; the strong interference signal is received by the scanning cancellation horn antenna, and the intermediate frequency strong interference signal is obtained after passing through the second second servo feed subsystem, the second low noise amplifier and the second down converter; the scanning cancellation horn antenna can cooperate with the perception module to perform full airspace scanning; the scanning cancellation receiving channel receives and processes the signal through wideband signal frequency conversion and then inputs it into the scanning cancellation unit.

[0015] Furthermore, the scanning cancellation unit includes a digital channel switching module, a second switch matrix module, a channel estimation module and an interference reconstruction module, wherein:

[0016] The scanning cancellation unit receives the intermediate frequency mixed signal and the intermediate frequency strong interference signal, and the second switch matrix selects the signal of the corresponding frequency band according to the task requirements and outputs it.

[0017] The digital channel switching module can control the second down-converter according to the task requirements, select the interference signal frequency band, and cooperate with the perception module to perform full-band scanning;

[0018] The channel estimation module calculates the amplitude difference and time difference between the interference component in the intermediate frequency mixed signal and the intermediate frequency strong interference signal, adjusts the amplitude and time delay of the intermediate frequency strong interference signal and outputs it so that the strong interference signal has the same amplitude as the interference component in the intermediate frequency mixed signal and has no time difference.

[0019] The interference reconstruction module performs weighted processing on the intermediate frequency strong interference signal after adjusting the amplitude and time delay, so as to realize reconstruction of the interference component in the intermediate frequency mixed signal.

[0020] Furthermore, the scanning cancellation unit uses the intermediate frequency mixed signal to subtract the weighted intermediate frequency strong interference signal to obtain the output signal, and continuously reduces the difference between the weighted strong interference signal and the interference component in the mixed signal by minimizing the objective function, thereby finally eliminating the interference component in the mixed signal and improving the signal-to-interference ratio of the mixed signal. The output canceled signal is a relatively pure target signal.

[0021] Furthermore, the integrated signal processing unit includes a first switch matrix, an intermediate frequency processing module, a communication module, a perception module and a detection module.

[0022] The first switch matrix selects a frequency band for output according to task requirements.

[0023] The intermediate frequency processing module receives the signal output by the switch matrix and the offset signal output by the scanning offset unit, and selectively outputs it according to the task requirements.

[0024] After the intermediate frequency signal is processed, wireless communication, spectrum sensing and target detection are realized according to the task. The communication module obtains communication data through signal demodulation, decoding, synchronization and other processing.

[0025] The perception module can choose to use the signal of the main receiving channel or the signal of the scanning cancellation receiving channel to analyze the signal parameters such as frequency and bandwidth, and can dispatch the broadband segmented parabolic antenna and the scanning cancellation horn antenna to scan the surrounding electromagnetic environment, control the scanning cancellation horn antenna to scan the full airspace signal, and control the digital switching module to scan the full frequency band signal to form the spectrum situation of the surrounding electromagnetic environment.

[0026] The detection module analyzes and processes the signals radiated by the target of interest, supports multi-channel signal reception for detection and positioning, and ultimately obtains information such as the target direction, completing the reception and processing of target signals in a complex electromagnetic interference environment.

[0027] When the perception module detects interference signals during the monitoring of the surrounding electromagnetic environment, it can guide the system to start interference cancellation to eliminate the impact of interference on the communication module and the detection module, thus providing a link foundation for the normal operation of the system.

[0028] After scanning the surrounding electromagnetic environment, the perception module can assist the communication module and the detection module in working according to the spectrum situation. The communication module and the detection module can select idle frequency bands without interference to carry out work, thereby improving the performance of wireless communication and target detection.

[0029] If the perception module and the detection module find that the service performance is limited during the service operation, which affects the normal operation of the communication module and the detection module, the perception module can be activated to conduct a general survey of the surrounding electromagnetic environment, check for abnormal signals in the surrounding area that affect the normal operation of the communication module and the detection module, and take targeted measures to eliminate the impact of abnormal signals on the communication module and the detection module.

[0030] The perception module, communication module, and detection module are designed in an integrated manner and can work together to improve the performance of the system and complete the reception and processing of target signals in complex electromagnetic interference environments.

[0031] Furthermore, after the system is powered on and initialized, it obtains the task issued by the center, adjusts the azimuth and pitch angles of the parabolic antenna according to the task parameters, accurately points the parabolic antenna to the task target position, controls the first switch matrix and the second switch matrix to select the intermediate frequency signal of the corresponding frequency band, and continuously receives the frequency band signal of interest radiated in the target direction.

[0032] Furthermore, the scanning cancellation horn antenna of the scanning cancellation receiving channel can be flexibly scheduled, the scanning rules can be set according to interference perception, and the azimuth and pitch angles of the scanning cancellation horn antenna can be quickly and accurately controlled through servo control to quickly perform full-space and full-band spectrum scanning of the surrounding electromagnetic space environment.

[0033] Furthermore, the intermediate frequency processing module performs signal selection switching according to whether there is an interference signal. If the interference signal exists, the integrated signal processing unit analyzes the offset signal, the input of the intermediate frequency processing module is switched to the offset signal, and the communication module, perception module and detection module process the offset signal; if the interference signal does not exist, the integrated signal processing unit analyzes the intermediate frequency mixed signal, the input of the intermediate frequency processing module is switched to the intermediate frequency mixed signal, and the communication module, perception module and detection module process the intermediate frequency mixed signal.

[0034] Furthermore, it is determined whether an interference signal exists. Specifically:

[0035] The signal received by the broadband segmented high-gain parabolic antenna is compared with the signal received by the scanning cancellation horn antenna. If the scanning cancellation horn antenna detects different signals from those received by the parabolic antenna in the frequency band of interest at different azimuths and elevations, it indicates that there is an interference signal in that frequency band. Alternatively, if the basic parameters of the signal received by the parabolic antenna do not match the intelligence prior information, it also indicates that there is an interference signal in that frequency band, resulting in erroneous analysis results of the target signal. If the normal performance of the system's communication module and detection module is limited and cannot work, and all modules in the system are normal after inspection, it also indicates that there is an external abnormal interference signal.

[0036] If the signals received by the scanning cancellation horn antenna and the parabolic antenna are the same, and the basic parameters of the signal received by the parabolic antenna are consistent with the intelligence prior information, it means that there is no co-frequency interference signal around, and the intermediate frequency mixed signal of the main receiving channel is directly selected for analysis and processing.

[0037] The beneficial effects of the present invention are as follows:

[0038] The present invention provides an integrated signal receiving device for communication, perception and detection. Compared with the problem of single function of existing wireless signal receiving systems, it proposes a signal receiving device that integrates communication, perception and detection, which can realize wireless communication, spectrum perception and target detection. The perception module, communication module and detection module can work together to improve the performance of the system and enhance the integration capability of the signal receiving device.

[0039] The present invention provides an integrated signal receiving device for communication and detection. Compared with the existing signal receiving system that is unable to perform integrated signal reception processing, it proposes an integrated signal reception and processing process for communication and detection. First, spectrum perception is uniformly performed on the received signals of different communication and detection tasks to generate the spectrum situation of the surrounding environment. Based on the interference perception results, the interference cancellation module is scheduled for the perception, communication and detection tasks on demand to eliminate the impact of the interference signal on the system performance and output a unified pre-processed signal. Finally, the system loads different business function modules through scheduling according to different tasks, realizing the multi-functional integration of communication and detection in a unified system.

[0040] The present invention provides an integrated signal receiving device for communication and detection. Compared with the existing wireless signal receiving system that cannot resist co-channel interference, it proposes an anti-interference architecture based on scanning cancellation. On the basis of scanning perception of the surrounding electromagnetic environment, interference cancellation processing is performed through channel estimation and interference reconstruction, thereby improving the ability of the wireless signal receiving system to resist interference in complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort, among which:

[0042] Figure 1 It is a schematic diagram of a telepathy and detection integrated signal receiving device of the present invention.

[0043] Figure 2 It is a flow chart of the task implementation of the present invention. DETAILED DESCRIPTION

[0044] In order to make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in various different configurations.

[0045] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, product or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, product or apparatus.

[0046] This embodiment provides a sensory and detection integrated signal receiving device, the composition structure of which is shown in FIG. Figure 1 , including the main receiving channel, scanning cancellation receiving channel, scanning cancellation unit and integrated signal processing unit,

[0047] The main receiving channel uses a broadband segmented high-gain parabolic antenna to receive mixed signals and output intermediate frequency mixed signals;

[0048] Scanning and cancelling receiving channel, using scanning and cancelling horn antenna to receive strong interference signals, outputting intermediate frequency strong interference signals, performing interference perception of surrounding electromagnetic environment and receiving strong interference signals;

[0049] The intermediate frequency mixed signal and the intermediate frequency strong interference signal are input into the scanning cancellation unit. The scanning cancellation unit estimates the interference component in the intermediate frequency mixed signal, subtracts the estimated interference component from the intermediate frequency mixed signal, eliminates the interference component in the intermediate frequency mixed signal, improves the signal-to-interference ratio of the mixed signal, and obtains a relatively pure target signal.

[0050] The integrated signal processing unit includes an intermediate frequency processing module, a communication module, a perception module and a detection module. The intermediate frequency processing module selects the offset signal and the intermediate frequency mixed signal according to the mission requirements. The communication module, the perception module and the detection module complete wireless communication, spectrum perception and target detection in complex electromagnetic environments.

[0051] The main receiving channel consists of a broadband segmented high-gain parabolic antenna, a first-day servo feed subsystem, first low-noise amplifiers 1~N, and first down-converters 1~N; a broadband segmented high-gain parabolic antenna is used to receive the mixed signal. After passing through the first-day servo feed subsystem, the signals of each frequency in the mixed signal are input into the first low-noise amplifier and the first down-converter of the corresponding frequency band to obtain an intermediate-frequency mixed signal; the main receiving channel performs frequency segmentation according to the signal characteristics to reduce internal cross-interference, and can select the corresponding frequency conversion output signal according to the task frequency band requirements.

[0052] The scanning cancellation receiving channel consists of a scanning cancellation horn antenna, a second second servo feed subsystem, a second low noise amplifier, and a second down converter; the scanning cancellation receiving channel adds a flexibly schedulable scanning cancellation horn antenna on the basis of a single parabolic receiving antenna in a traditional signal receiving system, and can quickly and accurately control the azimuth and pitch angles through servo control; the strong interference signal is received by the scanning cancellation horn antenna, and the intermediate frequency strong interference signal is obtained through the second second servo feed subsystem, the second low noise amplifier, and the second down converter; the scanning cancellation horn antenna can cooperate with the perception module to perform full airspace scanning; the scanning cancellation receiving channel performs reception processing through wideband signal frequency conversion, reducing the design complexity and realizing full-band signal reception function.

[0053] The scanning cancellation unit is composed of a digital channel switching module, a second switch matrix module, a channel estimation module and an interference reconstruction module; the scanning cancellation unit receives the intermediate frequency mixed signal and the intermediate frequency strong interference signal, the second switch matrix selects the signal of the corresponding frequency band according to the task requirements and outputs it, the digital channel switching module controls the second down converter to select the interference signal frequency band according to the task requirements, the digital channel switching module can cooperate with the perception module to perform full-band scanning, the channel estimation module calculates the amplitude difference and time difference between the interference component in the intermediate frequency mixed signal and the intermediate frequency strong interference signal, and adjusts the amplitude of the intermediate frequency strong interference signal. The output is adjusted after amplitude and time delay, so that the strong interference signal has the same amplitude as the interference component in the intermediate frequency mixed signal and there is no time difference. The interference reconstruction module performs weighted processing on the intermediate frequency strong interference signal after adjusting the amplitude and time delay to realize the reconstruction of the interference component in the intermediate frequency mixed signal. The scanning cancellation unit uses the intermediate frequency mixed signal to subtract the weighted intermediate frequency strong interference signal to obtain the output signal. By minimizing the objective function, the difference between the weighted strong interference signal and the interference component in the mixed signal is continuously reduced, and finally the interference component in the mixed signal is eliminated, the signal-to-interference ratio of the mixed signal is improved, and the output signal after cancellation is a relatively pure target signal.

[0054] The integrated signal processing unit consists of a first switch matrix, an intermediate frequency processing module, a communication module, a perception module and a detection module; the first switch matrix selects a frequency band for output according to the task requirements, the intermediate frequency processing module receives the signal output by the first switch matrix and the offset signal output by the scanning offset unit, and selectively outputs it according to the task requirements. After the intermediate frequency signal is processed, it can realize wireless communication, spectrum perception and target detection functions according to the task. The communication module obtains communication data after signal demodulation, decoding, synchronization and other processing. The perception module can choose to use the signal of the main receiving channel or the signal of the scanning offset receiving channel to analyze the signal frequency, bandwidth and other parameters, and can dispatch the broadband segmented parabolic antenna and the scanning offset horn antenna to scan the surrounding electromagnetic environment, control the scanning offset horn antenna to scan the entire airspace signal, and control the digital switching module to scan the full frequency band signal to form the spectrum situation of the surrounding electromagnetic environment. The detection module analyzes and processes the signal radiated by the target of interest, supports multi-channel signal reception for detection and positioning, and finally obtains information such as the target direction.

[0055] If the perception module of the integrated signal processing unit detects interference signals while monitoring the surrounding electromagnetic environment, it can instruct the system to activate interference cancellation, eliminating the impact of interference on the communication and detection modules, and providing a link foundation for the system's normal operation. After scanning the surrounding electromagnetic environment, the perception module can assist the communication and detection modules based on the spectrum situation. The communication and detection modules can select idle frequency bands that are not subject to interference to operate, improving the performance of wireless communication and target detection. If the perception and detection modules discover that service performance is limited, affecting the normal operation of the communication and detection modules during business operations, they can activate the perception module to conduct a survey of the surrounding electromagnetic environment, identify abnormal signals in the surrounding area that may affect the normal operation of the communication and detection modules, and take targeted measures to eliminate the impact of abnormal signals on the communication and detection modules. In short, the integrated design of the perception module, communication module, and detection module can work together to improve system performance and complete the reception and processing of target signals in complex electromagnetic interference environments. The integrated signal processing unit can process both the post-cancellation signal and the intermediate frequency mixed signal. Signal selection is performed through the intermediate frequency processing unit. When the input of the intermediate frequency processing unit switches to the post-cancellation signal, the communication module, perception module, and detection module process the post-cancellation signal. When the input of the intermediate frequency processing unit switches to the intermediate frequency mixed signal, the communication module, perception module, and detection module process the intermediate frequency mixed signal. Identification and analysis of the intermediate frequency mixed signal before interference cancellation can be used to compare performance before and after cancellation, or to enable communication, perception, or detection in an interference-free environment.

[0056] like Figure 2 As shown, the specific task implementation steps of the signal receiving device of the present invention are as follows:

[0057] Step 1: Obtain the signal reception task. After the system is powered on and initialized, it first obtains the task issued by the center. Based on the task requirements, the azimuth and elevation angles of the broadband segmented high-gain parabolic antenna are adjusted to accurately point to the mission target location. The first and second switch matrices select the intermediate frequency mixed signal of the corresponding frequency band according to the task requirements and continuously receive the frequency band signal of interest radiated in the target direction.

[0058] Step 2: Perception of the surrounding electromagnetic environment. The scanning cancellation horn antenna relies on its flexible azimuth and elevation adjustment characteristics. The perception module sets the scanning rules and quickly scans the entire airspace and frequency spectrum of the surrounding electromagnetic space environment.

[0059] Step 3: Determine whether interference exists. First, compare the signal received by the wideband segmented high-gain parabolic antenna with the signal received by the scanning cancellation horn antenna. If the scanning cancellation horn antenna receives different signals than the wideband segmented high-gain parabolic antenna at different azimuths and elevations in the frequency band of interest, it indicates that an interference signal is present in that frequency band. Alternatively, if the basic parameters of the signal received by the wideband segmented high-gain parabolic antenna do not match the prior intelligence information, it also indicates that an interference signal is present in that frequency band, causing erroneous target signal analysis results. Alternatively, if the system's communication module and detection module are unable to function due to performance limitations, and all other modules within the system are normal after troubleshooting, it also indicates the presence of an external abnormal interference signal. If the signals received by the scanning cancellation horn antenna and the wideband segmented high-gain parabolic antenna are identical, and the basic parameters of the signal received by the parabolic antenna match the prior intelligence information, it indicates that there is no co-channel interference signal in the surrounding area, and the signal on the main receiving channel can be directly selected for analysis and processing.

[0060] Step 4: Point in the direction of interference. The frequency band of the interference signal has been obtained through the previous steps. The interference signal's radiation source is located by scanning the cancellation horn antenna and the interference sensing module, obtaining the accurate azimuth angle and elevation value of the interference source relative to the system. The servo platform is then controlled to point the horn antenna and track the direction of the interference source to continuously receive strong interference signals.

[0061] Step 5: The scanning cancellation unit receives the intermediate frequency mixed signal and the intermediate frequency strong interference signal. The signal received by the broadband segmented high-gain parabolic antenna is amplified and down-converted through the first day servo feed subsystem, first low-noise amplifiers 1-N, and first down-converters 1-N of the main receiving channel to obtain an intermediate frequency mixed signal. The strong interference signal received by the scanning cancellation horn antenna is amplified and down-converted through the second day servo feed subsystem, second low-noise amplifier, and second down-converter of the scanning cancellation receiving channel to obtain an intermediate frequency strong interference signal. The intermediate frequency mixed signal and the intermediate frequency strong interference signal are input into the scanning cancellation module together. The target signal frequency band is selected through the second switch matrix, and the interference signal frequency band is selected by the second down-converter controlled by the digital channel switching module.

[0062] Step 6: Channel estimation. The scanning cancellation unit uses the channel estimation module to estimate the parameters of the IF strong interference signal, obtaining parameters such as the frequency, bandwidth, and interference type of the IF strong interference signal. It then compares these parameters with the parameters of the IF mixed signal to obtain the amplitude difference and time difference between the interference component in the IF mixed signal and the IF strong interference signal.

[0063] Step 7: Interference cancellation. Adjust the amplitude and delay of the strong IF interference signal based on the amplitude difference and time difference, so that the amplitude of the strong IF interference signal is the same as that of the interference component in the IF mixed signal and there is no time difference. Establish an interference cancellation model through an adaptive algorithm, perform weighted processing on the adjusted strong IF interference signal, reconstruct the interference signal, and subtract the weighted strong IF interference signal from the mixed signal. By minimizing the objective function, continuously reduce the difference between the weighted strong IF interference signal and the interference component in the IF mixed signal to obtain a pure target signal.

[0064] Step 8: Output the canceled signal. After processing by the scanning cancellation unit, the canceled signal is output to the integrated signal processing unit. The canceled signal significantly reduces the proportion of interference components compared to the pre-cancelled intermediate frequency mixed signal. Interference cancellation improves the signal-to-interference ratio of the mixed signal.

[0065] Step 9: Integrated processing of communication, perception and detection. The signal after the cancellation processing is input into the integrated signal processing unit, and communication, perception or detection processing can be performed according to the task requirements. After signal demodulation, decoding, synchronization and other processing, communication data is obtained to complete the wireless communication function; the signal frequency, bandwidth and other parameters are analyzed to obtain the spectrum situation of the surrounding electromagnetic environment to complete the spectrum perception function; the signal of the target of interest is analyzed and processed, and multi-station positioning can be supported by combining the information fed back by other systems to obtain the target direction information and complete the target detection function; this system can complete the reception and processing of target signals in complex electromagnetic interference environments. In addition, the unit can also directly analyze the main receiving channel signal, that is, to identify and analyze the signal before the interference cancellation processing, so as to compare the performance or perform space target signal reception and processing in the absence of interference.

[0066] The present invention proposes an integrated signal receiving device for communication, perception and detection, which can realize wireless communication, spectrum perception and target detection; the perception module can assist the system in interference cancellation, reducing the impact of interference signals on the communication module and the detection module; the perception module can obtain spectrum situation perception results, providing a basis for the service frequency band selection of the communication module and the detection module; when the performance of the communication module and the detection module is limited, the perception module can be relied upon to detect abnormal signals and respond; the perception module, the communication module and the detection module can work together, thereby improving the integration capability of the signal receiving device.

[0067] This invention proposes a processing flow for an integrated communication and detection signal receiving device. First, spectrum sensing is performed on the signals received by the different communication and detection tasks, generating a spectrum situation for the surrounding environment. Based on the interference sensing results, interference cancellation modules are scheduled as needed for the perception, communication, and detection tasks to eliminate the impact of interference signals on system performance and output a unified pre-processed signal. Finally, the system schedules and loads different business function modules based on the different tasks, achieving multifunctional integration of communication and detection within a unified system.

[0068] This invention proposes an anti-interference architecture based on scanning cancellation. Based on scanning and sensing of the surrounding electromagnetic environment, it performs interference cancellation processing through channel estimation and interference reconstruction, thereby improving the ability of wireless signal receiving systems to combat interference in complex environments. The invention is not limited to the aforementioned specific embodiments. The invention extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A sensory and detection integrated signal receiving device, characterized in that: It includes main receiving channel, scanning offset receiving channel, scanning offset unit and integrated signal processing unit. The main receiving channel uses a broadband segmented high-gain parabolic antenna to receive mixed signals and output intermediate frequency mixed signals; Scanning and cancelling receiving channel, using scanning and cancelling horn antenna to receive strong interference signals, outputting intermediate frequency strong interference signals, performing interference perception of surrounding electromagnetic environment and receiving strong interference signals; The intermediate frequency mixed signal and the intermediate frequency strong interference signal are input into the scanning cancellation unit. The scanning cancellation unit performs interference perception on the input intermediate frequency strong interference signal, estimates the interference component in the intermediate frequency mixed signal, subtracts the estimated interference component from the intermediate frequency mixed signal, eliminates the interference component in the intermediate frequency mixed signal, improves the signal-to-interference ratio of the mixed signal, and obtains a relatively pure target signal. The integrated signal processing unit includes an intermediate frequency processing module, a communication module, a perception module and a detection module. The intermediate frequency processing module selects the offset signal and the intermediate frequency mixed signal according to the mission requirements. The communication module, the perception module and the detection module complete wireless communication, spectrum perception and target detection in complex electromagnetic environments.

2. The integrated telepathy and detection signal receiving device according to claim 1, characterized in that: The main receiving channel includes a broadband segmented high-gain parabolic antenna, a first-day servo feed subsystem, multiple first low-noise amplifiers, and multiple first down-converters. The broadband segmented high-gain parabolic antenna is used to receive the mixed signal. After passing through the first-day servo feed subsystem, the mixed signal is input into the first low-noise amplifier and the first down-converter of the corresponding frequency band to obtain an intermediate frequency mixed signal. The main receiving channel performs frequency segmentation according to the signal characteristics to reduce internal cross interference. The scanning cancellation unit and the integrated signal processing unit select the corresponding frequency conversion output signal according to the task frequency band requirements.

3. The integrated telepathy and detection signal receiving device according to claim 1, characterized in that: The scanning cancellation receiving channel includes a scanning cancellation horn antenna, a second second servo feed subsystem, a second low noise amplifier and a second down converter; a strong interference signal is received by the scanning cancellation horn antenna, and a medium frequency strong interference signal is obtained through the second second servo feed subsystem, the second low noise amplifier and the second down converter; the scanning cancellation horn antenna can cooperate with the perception module to perform spatial scanning; the scanning cancellation receiving channel receives and processes the signal through wideband signal frequency conversion and then inputs it into the scanning cancellation unit.

4. The integrated telepathy and detection signal receiving device according to claim 1, characterized in that: The scanning cancellation unit includes a digital channel switching module, a second switch matrix module, a channel estimation module and an interference reconstruction module, wherein: The scanning cancellation unit receives the intermediate frequency mixed signal and the intermediate frequency strong interference signal, and the second switch matrix selects the signal of the corresponding frequency band according to the task requirements and outputs it. The digital channel switching module can control the second down-converter according to the task requirements, select the interference signal frequency band, and cooperate with the perception module to perform full-band scanning; The channel estimation module calculates the amplitude difference and time difference between the interference component in the intermediate frequency mixed signal and the intermediate frequency strong interference signal, adjusts the amplitude and time delay of the intermediate frequency strong interference signal and outputs it so that the strong interference signal has the same amplitude as the interference component in the intermediate frequency mixed signal and has no time difference. The interference reconstruction module performs weighted processing on the intermediate frequency strong interference signal after adjusting the amplitude and time delay, so as to realize reconstruction of the interference component in the intermediate frequency mixed signal.

5. The integrated telepathy and detection signal receiving device according to claim 4, characterized in that: The scanning cancellation unit uses the intermediate frequency mixed signal to subtract the weighted intermediate frequency strong interference signal to obtain the output signal. By minimizing the objective function, the difference between the weighted strong interference signal and the interference component in the mixed signal is continuously reduced, and finally the interference component in the mixed signal is eliminated, thereby improving the signal-to-interference ratio of the mixed signal. The output signal after cancellation is a relatively pure target signal.

6. The integrated telepathy and detection signal receiving device according to claim 5, characterized in that: The integrated signal processing unit includes a first switch matrix, an intermediate frequency processing module, a communication module, a perception module and a detection module. The first switch matrix selects a frequency band for output according to task requirements. The intermediate frequency processing module receives the signal output by the switch matrix and the offset signal output by the scanning offset unit, and selectively outputs it according to the task requirements. After the intermediate frequency signal is processed, wireless communication, spectrum sensing and target detection are realized according to the task. The communication module obtains communication data through signal demodulation, decoding, synchronization and other processing. The perception module can choose to use the signal of the main receiving channel or the signal of the scanning cancellation receiving channel to analyze the signal parameters such as frequency and bandwidth, and can dispatch the broadband segmented parabolic antenna and the scanning cancellation horn antenna to scan the surrounding electromagnetic environment, control the scanning cancellation horn antenna to scan the full airspace signal, and control the digital switching module to scan the full frequency band signal to form the spectrum situation of the surrounding electromagnetic environment. The detection module analyzes and processes the signals radiated by the target signal of interest, supports multi-channel signal reception for detection and positioning, and finally obtains information such as the target direction, completing the reception and processing of the target signal in a complex electromagnetic interference environment. When the perception module detects interference signals during the monitoring of the surrounding electromagnetic environment, it can guide the system to start interference cancellation to eliminate the impact of interference on the communication module and the detection module, thus providing a link foundation for the normal operation of the system. After scanning the surrounding electromagnetic environment, the perception module can assist the communication module and the detection module in working according to the spectrum situation. The communication module and the detection module can select idle frequency bands without interference to work, thereby improving the performance of wireless communication and target detection. If the perception module and the detection module find that the service performance is limited during the service operation, which affects the normal operation of the communication module and the detection module, the perception module can be activated to conduct a general survey of the surrounding electromagnetic environment, check for abnormal signals in the surrounding area that affect the normal operation of the communication module and the detection module, and take targeted measures to eliminate the impact of abnormal signals on the communication module and the detection module. The perception module, communication module, and detection module are designed in an integrated manner and can work together to improve the performance of the system and complete the reception and processing of target signals in complex electromagnetic interference environments.

7. The integrated telepathy and detection signal receiving device according to claim 6, characterized in that: After the system is powered on and initialized, it obtains the task issued by the center, adjusts the azimuth and pitch angles of the parabolic antenna according to the task parameters, accurately points the parabolic antenna to the task target location, controls the first switch matrix and the second switch matrix to select the intermediate frequency signal of the corresponding frequency band, and continuously receives the frequency band signal of interest radiated in the target direction.

8. The integrated telepathy and detection signal receiving device according to claim 3, characterized in that: The scanning cancellation horn antenna of the scanning cancellation receiving channel can be flexibly scheduled, and scanning rules can be set according to interference perception. The azimuth and pitch angles of the scanning cancellation horn antenna can be quickly and accurately controlled through servo control, so as to quickly perform full-space and full-band spectrum scanning of the surrounding electromagnetic space environment.

9. The integrated telepathy and detection signal receiving device according to claim 6, characterized in that: The intermediate frequency processing module performs signal selection switching according to whether there is an interference signal. If the interference signal exists, the integrated signal processing unit analyzes the offset signal, the input of the intermediate frequency processing module is switched to the offset signal, and the communication module, perception module and detection module process the offset signal; if the interference signal does not exist, the integrated signal processing unit analyzes the intermediate frequency mixed signal, the input of the intermediate frequency processing module is switched to the intermediate frequency mixed signal, and the communication module, perception module and detection module process the intermediate frequency mixed signal.

10. The integrated telepathy and detection signal receiving device according to claim 9, characterized in that: Determine whether an interference signal exists, specifically: The signal received by the broadband segmented high-gain parabolic antenna is compared with the signal received by the scanning cancellation horn antenna. If the scanning cancellation horn antenna detects different signals from those received by the parabolic antenna in the frequency band of interest at different azimuths and elevations, it indicates that an interference signal is present in that frequency band. Alternatively, if the basic parameters of the signal received by the parabolic antenna do not match the prior intelligence information, it also indicates that an interference signal is present in that frequency band, causing an error in the target signal analysis result. If the normal performance of the system's communication module and detection module is limited and cannot work, and all modules in the system are normal after inspection, it also indicates that there is an external abnormal interference signal; If the signals received by the scanning cancellation horn antenna and the parabolic antenna are the same, and the basic parameters of the signal received by the parabolic antenna are consistent with the intelligence prior information, it means that there is no co-frequency interference signal around, and the intermediate frequency mixed signal of the main receiving channel is directly selected for analysis and processing.

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