ESM and pcl integrated fusion probe system

Abstract

The application provides an ESM and PCL integrated fusion detection system, comprising: an ESM and PCL integrated radio frequency signal processing device, which is used for detecting a radiation source in a target area to obtain radiation source information, receiving a reflection echo signal of a target object based on a center frequency point of the target radiation source provided by a display control device, determining a first baseband signal based on the reflection echo signal, and providing the first baseband signal to the display control device; and the display control device, which is used for displaying a radiation source list based on the radiation source information, determining the target radiation source in the radiation source list, providing the center frequency point of the target radiation source to the ESM and PCL integrated radio frequency signal processing device, and performing PCL passive radar target detection processing on the first baseband signal to obtain detection information of the target object. The ESM and PCL integrated fusion detection system provided in the application is used for improving the detection accuracy of the target object.

Description

Technical Field

[0001] This invention relates to the fields of communication, radar and other technologies, and in particular to a fusion detection system integrating ESM and PCL. Background Technology

[0002] Radar technology is an important technology that uses electromagnetic waves to detect, locate, track, image, and identify targets. Passive radar (also known as external radiation source radar or passive radar) is a type of radar that does not emit electromagnetic wave signals but relies on electromagnetic wave signals that already exist in space to achieve functions such as target detection, location, and tracking.

[0003] In related technologies, when the target object is a radiation source or carries a radiation source, passive radar typically detects and tracks the target object based on the electromagnetic wave signals radiated by the radiation source.

[0004] However, in the aforementioned technologies, passive radar may fail to detect the target object when the target is radio silent (i.e., when the target does not radiate electromagnetic wave signals or does not carry a radiation source), resulting in poor detection accuracy. Summary of the Invention

[0005] This invention provides an integrated detection system combining ESM and PCL to address the problem that passive radars in the prior art may fail to detect targets, thereby improving the accuracy of target detection.

[0006] This invention provides a fusion detection system integrating ESM and PCL, comprising:

[0007] An integrated radio frequency signal processing device for ESM and PCL is used to detect radiation sources within a target area, obtain radiation source information, and provide the radiation source information to a display and control device; based on the center frequency of the target radiation source provided by the display and control device, it receives the reflected echo signal of the target object, determines a first baseband signal based on the reflected echo signal, and provides the first baseband signal to the display and control device; the reflected echo signal is the signal after the target object reflects the direct wave signal of the target radiation source.

[0008] The display and control device is used to display a list of radiation sources based on the radiation source information, determine the target radiation source in the list of radiation sources, provide the center frequency of the target radiation source to the integrated ESM and PCL radio frequency signal processing device, perform PCL passive radar target detection processing on the first baseband signal to obtain the detection information of the target object, and display the detection information.

[0009] According to the present invention, an integrated detection system combining ESM and PCL is provided, wherein the integrated radio frequency signal processing device for ESM and PCL includes:

[0010] A radio frequency signal receiver is configured to receive a direct wave signal from a radiation source within the target area via a first antenna, determine a first intermediate frequency signal based on the direct wave signal from the radiation source, and provide the first intermediate frequency signal to a signal processor; and receive a reflected echo signal based on the center frequency point via a second antenna, determine a second intermediate frequency signal based on the reflected echo signal, and provide the second intermediate frequency signal to the signal processor.

[0011] The signal processor is used to determine the radiation source information based on the first intermediate frequency signal and to determine the first baseband signal based on the second intermediate frequency signal.

[0012] According to the present invention, an integrated detection system combining ESM and PCL is provided, wherein the radio frequency signal receiver includes:

[0013] The first control unit is used to provide the first frequency control word and the second frequency control word to the local oscillator unit, and to provide amplitude attenuation information to the integrated ESM and PCL frequency conversion channel unit.

[0014] The local oscillator unit is used to generate a clock synchronization signal and provide the clock synchronization signal to the signal processor; it generates a first local oscillator signal based on the first frequency control word and the center frequency point, generates a second local oscillator signal based on the second frequency control word and the center frequency point, and provides the first local oscillator signal and the second local oscillator signal to the integrated ESM and PCL frequency conversion channel unit;

[0015] The integrated ESM and PCL frequency conversion channel unit is used to perform signal processing on the direct wave signal based on the first local oscillator signal, the second local oscillator signal, and the amplitude attenuation information to obtain the first intermediate frequency signal; and to perform signal processing on the reflected echo signal based on the first local oscillator signal, the second local oscillator signal, and the amplitude attenuation information to obtain the second intermediate frequency signal.

[0016] According to the present invention, an integrated detection system combining ESM and PCL is provided, wherein the local oscillator unit comprises:

[0017] Crystal Z1 is used to generate a reference clock and provide the reference clock to the power divider PW;

[0018] The power divider PW is used to provide a first input signal to phase-locked loop PLL1, a second input signal to phase-locked loop PLL2, and a third input signal to phase-locked loop PLL3 based on the reference clock.

[0019] The phase-locked loop (PLL1) is used to generate the clock synchronization signal based on the first input signal and the center frequency.

[0020] The phase-locked loop PLL2 is used to adjust the second input signal based on the first frequency control word and the center frequency to obtain the first local oscillator signal;

[0021] The phase-locked loop (PLL3) is used to adjust the third input signal based on the second frequency control word and the center frequency to obtain the second local oscillator signal.

[0022] According to the integrated detection system of ESM and PCL provided by the present invention, the local oscillator unit further includes:

[0023] A gating device is used to provide the power divider PW with the reference clock generated by the crystal oscillator Z1, or to provide the power divider PW with an externally input reference clock.

[0024] According to the present invention, an integrated detection system combining ESM and PCL is provided, wherein the integrated frequency conversion channel unit for ESM and PCL includes:

[0025] The ESM channel processing module is used to perform signal processing on the direct wave signal based on the first local oscillator signal, the second local oscillator signal and the amplitude attenuation information to obtain the first intermediate frequency signal;

[0026] The PCL channel processing module is used to process the reflected echo signal based on the first local oscillator signal, the second local oscillator signal, and amplitude attenuation information to obtain the second intermediate frequency signal.

[0027] According to the present invention, an integrated detection system combining ESM and PCL is provided, wherein the amplitude attenuation information includes a first amplitude attenuation value and a second amplitude attenuation value; the ESM channel processing module includes:

[0028] Limiter U1 is used to adjust the amplitude of the direct wave signal to obtain the first signal;

[0029] Low-noise amplifier LP1 is used to amplify the first signal with low noise to obtain the second signal;

[0030] The numerically controlled attenuator D1 is used to attenuate the amplitude of the second signal based on the first amplitude attenuation value to obtain the third signal;

[0031] Bandpass filter B1 is used to perform bandpass filtering on the third signal to obtain the fourth signal;

[0032] Low-noise amplifier LP2 is used to amplify the fourth signal with low noise to obtain the fifth signal;

[0033] Low-pass filter LB1 is used to perform low-pass filtering on the fifth signal to obtain the sixth signal;

[0034] Power attenuator PA1 is used to attenuate the power of the sixth signal to obtain the seventh signal;

[0035] Low-pass filter LB2 is used to perform low-pass filtering on the seventh signal to obtain the eighth signal;

[0036] Mixer S1 is used to mix the first local oscillator signal and the eighth signal to obtain the ninth signal;

[0037] Power attenuator PA2 is used to attenuate the power of the ninth signal to obtain the tenth signal;

[0038] Bandpass filter B2 is used to bandpass filter the tenth signal to obtain the eleventh signal;

[0039] Amplifier AP1 is used to amplify the eleventh signal to obtain the twelfth signal.

[0040] Low-pass filter LB3 is used to perform low-pass filtering on the twelfth signal to obtain the thirteenth signal;

[0041] Power attenuator PA3 is used to attenuate the power of the thirteenth signal to obtain the fourteenth signal;

[0042] Mixer S2 is used to mix the second local oscillator signal and the fourteenth signal to obtain the fifteenth signal;

[0043] Temperature-compensated attenuator T1 is used to process the fifteenth signal to obtain the sixteenth signal;

[0044] Bandpass filter B3 is used to bandpass filter the sixteenth signal to obtain the seventeenth signal;

[0045] The numerically controlled attenuator D2 is used to process and attenuate the amplitude of the seventeenth signal based on the second amplitude attenuation value to obtain the eighteenth signal;

[0046] Amplifier AP2 is used to amplify the amplitude of the eighteenth signal to obtain the nineteenth signal;

[0047] Low-pass filter LB4 is used to perform low-pass filtering on the nineteenth signal to obtain the twentieth signal;

[0048] Amplifier AP3 is used to amplify the amplitude of the twentieth signal to obtain the twenty-first signal;

[0049] Low-pass filter LB5 is used to perform low-pass filtering on the twenty-first signal to obtain the twenty-second signal;

[0050] The power attenuator PA4 is used to attenuate the power of the twentieth signal to obtain the first intermediate frequency signal.

[0051] According to the present invention, an integrated ESM and PCL fusion detection system is provided, wherein the amplitude attenuation information includes a third amplitude attenuation value and a fourth amplitude attenuation value; the PCL channel processing module includes:

[0052] Limiter U2 is used to adjust the amplitude of the reflected echo signal to obtain the twenty-third signal;

[0053] Low-noise amplifier LP3 is used to amplify the twenty-third signal with low noise to obtain the twenty-fourth signal;

[0054] The numerically controlled attenuator D3 is used to attenuate the amplitude of the twenty-fourth signal based on the third amplitude attenuation value to obtain the twenty-fifth signal;

[0055] Bandpass filter B4 is used to perform bandpass filtering on the twenty-fifth signal to obtain the twenty-sixth signal;

[0056] Low-noise amplifier LP4 is used to amplify the twenty-sixth signal with low noise to obtain the twenty-seventh signal;

[0057] Low-pass filter LB6 is used to perform low-pass filtering on the twenty-seventh signal to obtain the twenty-eighth signal;

[0058] Power attenuator PA5 is used to attenuate the power of the twenty-eighth signal to obtain the twenty-ninth signal;

[0059] Low-pass filter LB7 is used to perform low-pass filtering on the twenty-ninth signal to obtain the thirtieth signal;

[0060] Mixer S3 is used to mix the first local oscillator signal and the thirtieth signal to obtain the thirty-first signal;

[0061] Power attenuator PA6 is used to attenuate the power of the thirty-first signal to obtain the thirty-second signal;

[0062] Bandpass filter B5 is used to perform bandpass filtering on the thirty-second signal to obtain the thirty-third signal;

[0063] Amplifier AP4 is used to amplify the amplitude of the thirty-third signal to obtain the thirty-fourth signal;

[0064] Low-pass filter LB8 is used to perform low-pass filtering on the thirty-fourth signal to obtain the thirty-fifth signal;

[0065] Power attenuator PA7 is used to attenuate the power of the thirty-fifth signal to obtain the thirty-sixth signal;

[0066] Mixer S4 is used to process the second local oscillator signal and the thirty-sixth signal to obtain the thirty-seventh signal;

[0067] Temperature-compensated attenuator T2 is used to perform temperature-compensated attenuation on the thirty-seventh signal to obtain the thirty-eighth signal;

[0068] Bandpass filter B6 is used to perform bandpass filtering on the thirty-eighth signal to obtain the thirty-ninth signal;

[0069] The numerically controlled attenuator D4 is used to attenuate the amplitude of the thirty-ninth signal based on the fourth amplitude attenuation value to obtain the fortieth signal;

[0070] Amplifier AP5 is used to amplify the amplitude of the fortieth signal to obtain the forty-first signal;

[0071] Power attenuator PA8 is used to attenuate the power of the forty-first signal to obtain the forty-second signal;

[0072] Amplifier AP6 is used to amplify the amplitude of the forty-second signal to obtain the forty-third signal;

[0073] Low-pass filter LB9 is used to perform low-pass filtering on the forty-third signal to obtain the forty-fourth signal.

[0074] Amplifier AP7 is used to amplify the amplitude of the forty-fourth signal to obtain the forty-fifth signal;

[0075] Low-pass filter LB10 is used to perform low-pass filtering on the forty-fifth signal to obtain the forty-sixth signal;

[0076] The power attenuator PA9 is used to attenuate the power of the forty-sixth signal to obtain the second intermediate frequency signal.

[0077] According to the present invention, an integrated detection system combining ESM and PCL is provided, wherein the signal processor includes:

[0078] Analog-to-digital converter AD1 is used to perform analog-to-digital conversion on the first intermediate frequency signal to obtain a first digital signal;

[0079] The analog-to-digital converter AD2 is used to perform analog-to-digital conversion on the second intermediate frequency signal to obtain a second digital signal;

[0080] A programmable array logic (FPGA) chip is used to synchronize the first digital signal based on the clock synchronization signal to obtain an azimuth synchronization pulse signal and a range synchronization pulse signal; perform digital down-conversion on the first digital signal to obtain a second baseband signal; perform parameter measurement on the second baseband signal to obtain signal measurement results; generate pulse descriptor word (PDW) data based on the signal measurement results; provide the radiation source information including the second baseband signal and the PDW data to the display and control device; perform digital down-conversion on the second digital signal to obtain a third baseband signal; and perform signal acquisition on the third baseband signal based on the azimuth synchronization pulse signal and the range synchronization pulse signal to obtain the first baseband signal.

[0081] According to the integrated detection system of ESM and PCL provided by the present invention, the signal processor further includes:

[0082] The second control unit receives signal processing information provided by the display and control device. The signal processing information includes the first frequency control word, the second frequency control word, and the amplitude attenuation information. The control unit parses the signal processing information to obtain the first frequency control word, the second frequency control word, and the amplitude attenuation information, and provides the first frequency control word, the second frequency control word, and the amplitude attenuation information to the first control unit.

[0083] The system receives frequency setting information provided by the display and control device, parses the frequency setting information to obtain the center frequency, and provides the center frequency to the first control unit.

[0084] This invention provides an integrated ESM and PCL detection system. It detects radiation sources within a target area using an integrated ESM and PCL radio frequency signal processing device, obtaining radiation source information and providing this information to a display and control device. Based on the center frequency of the target radiation source provided by the display and control device, it receives the reflected echo signal from the target object. Based on the reflected echo signal, it determines a first baseband signal and provides this signal to the display and control device. The reflected echo signal is the signal after the target object reflects the direct wave signal from the target radiation source. Based on the radiation source information, the display and control device displays a list of radiation sources and identifies the target radiation source from this list. It also provides the center frequency of the target radiation source to the integrated ESM and PCL radio frequency signal processing device. Finally, it performs PCL passive radar target detection processing on the first baseband signal to obtain target object detection information, which is then displayed. This system solves the problem in existing passive radar systems where the system may fail to detect targets, thus improving the accuracy of target object detection. Attached Figure Description

[0085] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0086] Figure 1 This is a schematic diagram of an application scenario provided by an embodiment of the present invention;

[0087] Figure 2 This is a schematic diagram of the integrated detection system combining ESM and PCL provided in an embodiment of the present invention;

[0088] Figure 3 This is a schematic diagram of the integrated ESM and PCL radio frequency signal processing device provided in an embodiment of the present invention;

[0089] Figure 4 This is a schematic diagram of the structure of the radio frequency signal receiver provided in an embodiment of the present invention;

[0090] Figure 5 This is a schematic diagram of the structure of the local oscillator unit provided in an embodiment of the present invention;

[0091] Figure 6 This is a schematic diagram of the integrated ESM and PCL frequency converter channel unit provided in an embodiment of the present invention;

[0092] Figure 7 This is a schematic diagram of the structure of the ESM channel processing module provided in an embodiment of the present invention;

[0093] Figure 8 This is a schematic diagram of the PCL channel processing module provided in an embodiment of the present invention;

[0094] Figure 9 This is a schematic diagram of the signal processor provided in an embodiment of the present invention;

[0095] Figure 10 This is a flowchart illustrating the workflow of the integrated ESM and PCL detection system provided in this embodiment of the invention. Detailed Implementation

[0096] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0097] In this invention, the term "comprising" and its variations can refer to a non-limiting inclusion; the term "or" and its variations can refer to "and / or". The terms "first", "second", etc., in this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. In this invention, "at least one or more" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0098] In related technologies, passive radar may fail to detect targets when they are radio silent.

[0099] To address the aforementioned technical problems, this invention provides an integrated ESM and PCL fusion detection system, comprising: a display and control device, and an integrated ESM and PCL radio frequency signal processing device. The integrated ESM and PCL fusion detection system provided by this invention will be described below with reference to specific embodiments.

[0100] First, combine Figure 1 This paper describes one application scenario of the integrated detection system of ESM and PCL provided by the present invention.

[0101] Figure 1 This is a schematic diagram illustrating an application scenario provided by an embodiment of the present invention. For example... Figure 1 As shown, this application scenario includes: target object, target radiation source, and a fusion detection system integrating electronic support measure (ESM) and passive coherent location (PCL).

[0102] The target object is the object that the integrated detection system combining ESM and PCL needs to detect.

[0103] The integrated detection system combining ESM and PCL receives the direct wave signal from the target radiation source within the target area; based on the center frequency of the target radiation source, it receives the reflected echo signal from the target object; based on the direct wave signal and the reflected echo signal, it determines the detection information of the target object and displays the detection information.

[0104] Figure 2 This is a schematic diagram of the integrated detection system combining ESM and PCL provided in an embodiment of the present invention. Figure 2 As shown, the system includes: display and control equipment, and an integrated radio frequency signal processing device for ESM and PCL.

[0105] An integrated ESM and PCL radio frequency signal processing device can perform at least one or more of the following operations:

[0106] Detect radiation sources within the target area and obtain radiation source information;

[0107] Provide radiation source information to display and control equipment;

[0108] Based on the center frequency of the target radiation source provided by the display and control equipment, the reflected echo signal of the target object is received. The reflected echo signal is the signal after the target object reflects the direct wave signal of the target radiation source.

[0109] The first baseband signal is determined based on the reflected echo signal;

[0110] Provide the first baseband signal to the display and control equipment.

[0111] The target area is the scanning area configured on the display and control device. The target area may be, for example, an aerial area, a sea area, or a land area.

[0112] The number of radiation sources within the target area can be 0, 1, or multiple.

[0113] Radiation sources include, for example, radar, communication radios, transponders, active jammers, navigation devices, broadcasting systems, or mobile communication signals.

[0114] Radiation source information is used by display and control devices to show a list of radiation sources.

[0115] Optionally, the radiation source information includes a second baseband signal and PDW data. The second baseband signal may be, for example, in-phase and quadrature (IQ) data. For an explanation of the second baseband signal, please refer to [link to documentation / reference]. Figure 9 Example.

[0116] The PDW data includes center frequency, frequency, pulse width, bandwidth, repetition rate, time of arrival (TOA), direction of arrival (DOA), carrier frequency (CF), pulse width (PW), pulse amplitude (PA), intra-pulse modulation parameters (PM), pulse repetition interval (PRI), and antenna scan period (ASP).

[0117] For example, when there are 3 radiation sources, the list of radiation sources is shown in Table 1 below.

[0118] Table 1

[0119]

[0120] The target object can be a radiation source or a target capable of reflecting the signal from a radiation source. If the target object is a radiation source, it could be, for example, a radar, communication radio station, broadcast radio station, satellite communication signal, or electromagnetic radiation source.

[0121] The display and control device may perform at least one or more of the following operations:

[0122] Display a list of radiation sources based on radiation source information;

[0123] Identify the target radiation source from the list of radiation sources;

[0124] Provide the center frequency of the target radiation source to the integrated radio frequency signal processing equipment of ESM and PCL;

[0125] The first baseband signal is processed by PCL passive radar target detection to obtain the target object detection information.

[0126] Displays detection information.

[0127] Optionally, the display and control device determines the target radiation source from the radiation source list, including:

[0128] A radiation source randomly selected from the list of radiation sources will be designated as the target radiation source; or,

[0129] The first radiation source in the list of radiation sources is identified as the target radiation source.

[0130] The first baseband signal is, for example, IQ data. The first baseband signal and the second baseband signal are different IQ data.

[0131] Optionally, the first baseband signal can be processed using passive coherent location (PCL) for passive radar target detection. PCL passive radar target detection processing includes, for example, pulse compression, noncoherent accumulation, moving target detection (MTD) processing, moving target indicator (MTI) processing, and adaptive constant false alarm rate (CFAR) detection.

[0132] Among them, pulse compression is to perform matched filtering on the first baseband signal, and the operating parameters of the matched filter that performs the matched filtering are pre-designed.

[0133] Noncoherent accumulation, for example, is 5-pulse accumulation. Noncoherent accumulation can improve the signal-to-noise ratio of the surveillance channel, which is beneficial for the detection of small targets.

[0134] MTI processing, for example, is 3-pulse cancellation. MTI processing can suppress fixed ground clutter.

[0135] MTD processing, for example, is 16-point Fast Fourier Transform (FFT) processing, which involves coherent accumulation of the reflected echo signal.

[0136] Adaptive CFAR detection, for example, selects large CFAR for cell average (GO-CFAR).

[0137] Optionally, the detection information may be displayed using one or more of the following methods:

[0138] A is displayed;

[0139] P display;

[0140] B shows.

[0141] The monitor corresponding to A-type display is A-scope, the monitor corresponding to P-type display is Plan Position Indicator (PPI), and the monitor corresponding to B-type display is B-scope.

[0142] exist Figure 2 In the integrated ESM and PCL detection system provided in this embodiment, the integrated ESM and PCL radio frequency signal processing device detects radiation sources within the target area and obtains radiation source information. The display and control device determines the target radiation source from a list of radiation sources displayed based on the radiation source information and provides the center frequency of the target radiation source to the integrated ESM and PCL radio frequency signal processing device. Based on the center frequency, the integrated ESM and PCL radio frequency signal processing device receives the reflected echo signal and performs PCL passive radar target detection processing on the first baseband signal determined based on the reflected echo signal to obtain the detection information of the target object, which is then displayed. In the above-mentioned integrated ESM and PCL detection system, even in the case of radio silence of the target object, the integrated ESM and PCL radio frequency signal processing device can still achieve passive radar detection of the target object based on the center frequency of the target radiation source provided by the display and control device, thereby improving the detection accuracy of the target object.

[0143] Furthermore, in this application, the integrated radio frequency signal processing device of ESM and PCL receives the direct wave signal from the external radiation source and obtains parameters such as the frequency, pulse width, and bandwidth of the direct wave signal, thereby realizing the perception of the surrounding electromagnetic environment. This ensures that the display and control equipment can select different radiation sources as target radiation sources to control the integrated radio frequency signal processing device of ESM and PCL for passive radar detection, thus improving the application range of the integrated fusion detection system of ESM and PCL.

[0144] Furthermore, the integrated ESM and PCL detection system provided in this embodiment of the invention has a simple structure, small size, and is easy to install on a mobile platform, resulting in low manufacturing and maintenance costs. Moreover, the integrated ESM and PCL detection system does not emit signals, making it difficult to detect or interfere with, and enabling all-day and all-weather target detection.

[0145] In some embodiments, the display and control device also has a data storage function. Upon receiving the first baseband signal and radiation source information, the display and control device stores the first baseband signal and radiation source information for subsequent playback analysis or algorithm verification.

[0146] In some embodiments, the integrated ESM and PCL radio frequency signal processing device also has an alarm function. When a radiation source is detected in the target area, the integrated ESM and PCL radio frequency signal processing device will issue an alarm to indicate that a new radiation source has been detected.

[0147] Figure 3 This is a schematic diagram of the integrated ESM and PCL radio frequency signal processing device provided in an embodiment of the present invention. Figure 3 As shown, the integrated RF signal processing equipment of ESM and PCL includes: an RF signal receiver and a signal processor.

[0148] The radio frequency signal receiver can perform at least one or more of the following operations:

[0149] The first antenna receives direct wave signals from radiation sources within the target area.

[0150] The first intermediate frequency signal is determined based on the direct wave signal from the radiation source;

[0151] Provide the first intermediate frequency signal to the signal processor;

[0152] The reflected echo signal is received via the second antenna, based on the center frequency.

[0153] The second intermediate frequency signal is determined based on the reflected echo signal;

[0154] Provide a second intermediate frequency signal to the signal processor.

[0155] Optionally, the first and second antennas are located in the antenna receiving system of the integrated ESM and PCL detection system. The antenna receiving system also includes an antenna bracket, flange, and RF cables. The first and second antennas can have identical structures. Both antennas are directional antennas ranging from 1 GHz to 3.6 GHz. The antenna bracket can be a tripod. Optionally, the height of the antenna bracket can be adjusted as needed. The flange is mounted on top of the antenna bracket. The flange has functions for adjusting the antenna azimuth and elevation angles.

[0156] Optionally, the intermediate frequency signal output range of the radio frequency signal receiver is -50 dBm to 5 dBm, and the operating frequency band of the radio frequency signal receiver is 1 GHz to 3.6 GHz.

[0157] The signal processor can perform at least one or more of the following operations:

[0158] Based on the first intermediate frequency signal, the radiation source information is determined;

[0159] The first baseband signal is determined based on the second intermediate frequency signal.

[0160] Optionally, the signal processor also has functions such as initialization of the integrated ESM and PCL detection system, network address configuration, and power-on of the internal hardware of the integrated ESM and PCL detection system.

[0161] exist Figure 3 In this embodiment, the radio frequency (RF) signal receiver determines a first intermediate frequency (IF) signal based on the direct wave signal from the radiation source within the target area; the signal processor determines the radiation source information based on the first IF signal, enabling the RF signal receiver to obtain the center frequency point of the target radiation source in the radiation source list based on the radiation source information, receive the reflected echo signal, and determine the second IF signal based on the reflected echo signal. This ensures that, when a direct wave signal is received, the target radiation source can be selected as needed (i.e., a frequency range or center frequency point is selected) to control the RF signal receiver to receive the reflected echo signal, thereby improving the detection accuracy of the target object.

[0162] Figure 4 This is a schematic diagram of the structure of the radio frequency signal receiver provided in an embodiment of the present invention. Figure 4 As shown, the radio frequency signal receiver includes: a first control unit, a local oscillator unit, and a frequency conversion channel unit integrating ESM and PCL.

[0163] The first control unit may perform at least one or more of the following operations:

[0164] Provide the local oscillator unit with a first frequency control word and a second frequency control word;

[0165] Provide amplitude attenuation information to the integrated ESM and PCL frequency converter channel unit.

[0166] The first frequency control word is used to control the frequency of the first local oscillator signal, the second frequency control word is used to control the frequency of the second local oscillator signal, and the amplitude attenuation information is used to control the amplitude of the first intermediate frequency signal and the second intermediate frequency signal.

[0167] Optionally, the first control unit is provided with a Serial Peripheral Interface (SPI), through which the first control unit communicates with the signal processor.

[0168] The local oscillator unit can perform at least one or more of the following operations:

[0169] Generate a clock synchronization signal and provide the clock synchronization signal to the signal processor;

[0170] A first local oscillator signal is generated based on the first frequency control word and the center frequency point, and a second local oscillator signal is generated based on the second frequency control word and the center frequency point. The first and second local oscillator signals are then provided to the integrated frequency converter channel unit of ESM and PCL.

[0171] The integrated ESM and PCL frequency converter unit can perform at least one or more of the following operations:

[0172] Based on the first local oscillator signal, the second local oscillator signal, and the amplitude attenuation information, the direct wave signal is processed to obtain the first intermediate frequency signal.

[0173] Based on the first local oscillator signal, the second local oscillator signal, and amplitude attenuation information, the reflected echo signal is processed to obtain the second intermediate frequency signal.

[0174] Figure 5 This is a schematic diagram of the structure of the local oscillator unit provided in an embodiment of the present invention. Figure 5 As shown, the local oscillator unit includes: crystal oscillator Z1, power divider PW, phase-locked loop PLL1, phase-locked loop PLL2 and phase-locked loop PLL3.

[0175] Crystal Z1 is used to generate a reference clock and provide the reference clock to the power divider PW.

[0176] The resonant frequency of crystal oscillator Z1 can be, for example, 100MHz. When the resonant frequency of crystal oscillator Z1 is 100MHz, the frequency of the generated reference clock is 100MHz.

[0177] The power divider PW is used to provide a first input signal to phase-locked loop PLL1, a second input signal to phase-locked loop PLL2, and a third input signal to phase-locked loop PLL3 based on a reference clock.

[0178] The phase-locked loop (PLL1) is used to generate a clock synchronization signal based on the first input signal and the center frequency.

[0179] The frequency of the clock synchronization signal is, for example, 30.72 MHz.

[0180] The phase-locked loop (PLL2) is used to adjust the second input signal based on the first frequency control word and the center frequency to obtain the first local oscillator signal.

[0181] The frequency range of the first local oscillator signal is, for example, 5.35 GHz to 7.95 GHz.

[0182] The phase-locked loop (PLL3) is used to adjust the third input signal based on the second frequency control word and the center frequency to obtain the second local oscillator signal.

[0183] The frequency of the first local oscillator signal is, for example, 4.63 GHz.

[0184] In some embodiments, the local oscillator unit further includes:

[0185] The selector C1 is used to provide the power divider PW with a reference clock generated by the crystal oscillator Z1, or to provide the power divider PW with an external input reference clock (i.e., a reference clock generated by an external clock source).

[0186] The first local oscillator signal and the second local oscillator signal are in phase.

[0187] Phase-locked loop (PLL1) and PLL2 share the same clock source (e.g., crystal oscillator Z1 or an external clock source).

[0188] exist Figure 5 In this embodiment, the phase-locked loop (PLL1) generates a clock synchronization signal based on the first input signal and the center frequency, which enables the clock source output function; the selector C1 provides the power divider PW with a reference clock generated by the crystal oscillator Z1, or provides the power divider PW with an externally input reference clock, so that the local oscillator unit has an automatic switching function between internal and external clock sources, that is, it provides the power divider PW with a reference clock generated by the crystal oscillator Z1 or an externally input reference clock.

[0189] Figure 6 This is a schematic diagram of the integrated ESM and PCL frequency converter channel unit provided in an embodiment of the present invention. Figure 6 As shown, the integrated ESM and PCL frequency converter channel unit includes: an ESM channel processing module and a PCL channel processing module.

[0190] The ESM channel processing module is used to process the direct wave signal based on the first local oscillator signal, the second local oscillator signal, and amplitude attenuation information to obtain the first intermediate frequency signal.

[0191] Optionally, the signal input range of the ESM channel processing module is -110dBm to -40dBm, the maximum signal bandwidth is 10 MHz, the link gain is 60 dB, and the link amplitude control is 60 dB.

[0192] For example, the frequency range of the first local oscillator signal is 5.35-7.95 GHz.

[0193] For example, the frequency of the second local oscillator signal is 4.63 GHz.

[0194] The PCL channel processing module is used to process the reflected echo signal based on the first local oscillator signal, the second local oscillator signal, and amplitude attenuation information to obtain the second intermediate frequency signal.

[0195] Optionally, the signal input range of the PCL channel processing module is -85dBm to -20dBm, the maximum signal bandwidth is 100MHz, the link gain is 45dB, and the link amplitude control is 45dB.

[0196] exist Figure 6 In this embodiment, the ESM channel processing module processes the direct wave signal based on the first local oscillator signal, the second local oscillator signal, and amplitude attenuation information to obtain the first intermediate frequency (IF) signal; the PCL channel processing module processes the reflected echo signal based on the first local oscillator signal, the second local oscillator signal, and amplitude attenuation information to obtain the second IF signal. This allows the direct wave signal and the reflected echo signal to be converted into IF signals, ensuring that when the direct wave signal or the reflected echo signal is a small signal, it can be amplified into an IF signal, making it easy to process. It also ensures that when the direct wave signal or the reflected echo signal is a large signal, it can be converted into an IF signal, avoiding damage to the radio frequency signal receiver.

[0197] Figure 7 This is a schematic diagram of the ESM channel processing module provided in an embodiment of the present invention. Figure 7As shown, the amplitude attenuation information includes a first amplitude attenuation value and a second amplitude attenuation value. The ESM channel processing module includes: limiter U1, low-noise amplifier LP1, digitally controlled attenuator D1, bandpass filter B1, low-noise amplifier LP2, low-pass filter LB1, power attenuator PA1, low-pass filter LB2, mixer S1, power attenuator PA2, bandpass filter B2, amplifier AP1, low-pass filter LB3, power attenuator PA3, mixer S2, temperature-compensated attenuator T1, bandpass filter B3, digitally controlled attenuator D2, amplifier AP2, low-pass filter LB4, amplifier AP3, low-pass filter LB5, and power attenuator PA4.

[0198] Limiter U1 is used to adjust the amplitude of the direct wave signal to obtain the first signal Sg1.

[0199] The low-noise amplifier LP1 is used to amplify the first signal with low noise to obtain the second signal Sg2.

[0200] The numerically controlled attenuator D1 is used to attenuate the amplitude of the second signal Sg2 based on the first amplitude attenuation value to obtain the third signal Sg3.

[0201] Bandpass filter B1 is used to bandpass filter the third signal Sg3 to obtain the fourth signal Sg4.

[0202] The low-noise amplifier LP2 is used to amplify the fourth signal Sg4 with low noise to obtain the fifth signal Sg5.

[0203] Low-pass filter LB1 is used to perform low-pass filtering on the fifth signal Sg5 to obtain the sixth signal Sg6.

[0204] The power attenuator PA1 is used to attenuate the power of the sixth signal Sg6 to obtain the seventh signal Sg7.

[0205] Low-pass filter LB2 is used to perform low-pass filtering on the seventh signal Sg7 to obtain the eighth signal Sg8.

[0206] Mixer S1 is used to mix the first local oscillator signal and the eighth signal Sg8 to obtain the ninth signal Sg9.

[0207] For example, when the frequency range of the first local oscillator signal is 5.35-7.95 GHz, the frequency range of the ninth signal Sg9 is 4.35 GHz ± 50 MHz.

[0208] The power attenuator PA2 is used to attenuate the power of the ninth signal Sg9 to obtain the tenth signal Sg10.

[0209] Bandpass filter B2 is used to bandpass filter the tenth signal Sg10 to obtain the eleventh signal Sg11.

[0210] Amplifier AP1 is used to amplify the amplitude of the eleventh signal Sg11 to obtain the twelfth signal Sg12.

[0211] Low-pass filter LB3 is used to perform low-pass filtering on the twelfth signal Sg12 to obtain the thirteenth signal Sg13.

[0212] The power attenuator PA3 is used to attenuate the power of the thirteenth signal Sg13 to obtain the fourteenth signal Sg14.

[0213] Mixer S2 is used to mix the second local oscillator signal and the fourteenth signal Sg14 to obtain the fifteenth signal Sg15.

[0214] For example, when the frequency of the second local oscillator signal is 4.63 GHz, the frequency range of the fifteenth signal Sg15 is 230 MHz to 330 MHz.

[0215] Temperature-compensated attenuator T1 is used to process the fifteenth signal Sg15 to obtain the sixteenth signal Sg16.

[0216] Bandpass filter B3 is used to bandpass filter the sixteenth signal Sg16 to obtain the seventeenth signal Sg17.

[0217] The numerically controlled attenuator D2 is used to process and attenuate the amplitude of the seventeenth signal Sg17 based on the second amplitude attenuation value, so as to obtain the eighteenth signal Sg18.

[0218] Amplifier AP2 is used to amplify the amplitude of the eighteenth signal Sg18 to obtain the nineteenth signal Sg19.

[0219] Low-pass filter LB4 is used to perform low-pass filtering on the nineteenth signal Sg19 to obtain the twentieth signal Sg20.

[0220] Amplifier AP3 is used to amplify the amplitude of the twentieth signal Sg20 to obtain the twenty-first signal Sg21.

[0221] Low-pass filter LB5 is used to perform low-pass filtering on the twenty-first signal Sg21 to obtain the twenty-second signal Sg22.

[0222] The power attenuator PA4 is used to attenuate the power of the twenty-second signal Sg22 to obtain the first intermediate frequency signal.

[0223] Figure 8 This is a schematic diagram of the PCL channel processing module provided in an embodiment of the present invention. Figure 8As shown, the amplitude attenuation information includes the third amplitude attenuation value and the fourth amplitude attenuation value. The PCL channel processing module includes: limiter U2, low noise amplifier LP3, digitally controlled attenuator D3, bandpass filter ZB4, low noise amplifier LP4, low pass filter LB6, power attenuator PA5, low pass filter LB7, mixer S3, power attenuator PA6, bandpass filter ZB5, amplifier AP4, low pass filter LB8, power attenuator PA7, mixer S4, temperature compensated attenuator T2, bandpass filter ZB6, digitally controlled attenuator D4, amplifier AP5, power attenuator PA8, amplifier AP6, low pass filter LB9, amplifier AP7, low pass filter LB10, and power attenuator PA9.

[0224] Limiter U2 is used to adjust the amplitude of the reflected echo signal to obtain the twenty-third signal Sg23.

[0225] The low-noise amplifier LP3 is used to amplify the twenty-third signal Sg23 with low noise to obtain the twenty-fourth signal Sg24.

[0226] The numerically controlled attenuator D3 is used to attenuate the amplitude of the twenty-fourth signal Sg24 based on the third amplitude attenuation value, so as to obtain the twenty-fifth signal Sg25.

[0227] Bandpass filter B4 is used to bandpass filter the twenty-fifth signal Sg25 to obtain the twenty-sixth signal Sg26.

[0228] The low-noise amplifier LP4 is used to amplify the twenty-sixth signal Sg26 with low noise to obtain the twenty-seventh signal Sg27.

[0229] Low-pass filter LB6 is used to perform low-pass filtering on the twenty-seventh signal Sg27 to obtain the twenty-eighth signal Sg28.

[0230] The power attenuator PA5 is used to attenuate the power of the twenty-eighth signal Sg28 to obtain the twenty-ninth signal Sg29.

[0231] Low-pass filter LB7 is used to perform low-pass filtering on the twenty-ninth signal Sg29 to obtain the thirtieth signal Sg30.

[0232] Mixer S3 is used to mix the first local oscillator signal and the thirtieth signal Sg30 to obtain the thirty-first signal Sg31.

[0233] For example, when the frequency range of the first local oscillator signal is 5.35-7.95 GHz, the frequency range of the thirty-first signal Sg31 is 4.35 GHz ± 50 MHz.

[0234] The power attenuator PA6 is used to attenuate the power of the thirty-first signal Sg31 to obtain the thirty-second signal Sg32.

[0235] Bandpass filter B5 is used to bandpass filter the thirty-second signal Sg32 to obtain the thirty-third signal Sg33.

[0236] Amplifier AP4 is used to amplify the amplitude of the thirty-third signal Sg33 to obtain the thirty-fourth signal Sg34.

[0237] The low-pass filter LB8 is used to perform low-pass filtering on the thirty-fourth signal Sg34 to obtain the thirty-fifth signal Sg35.

[0238] The power attenuator PA7 is used to attenuate the power of the thirty-fifth signal Sg35 to obtain the thirty-sixth signal Sg36.

[0239] Mixer S4 is used to process the second local oscillator signal and the thirty-sixth signal Sg36 to obtain the thirty-seventh signal Sg37.

[0240] For example, when the frequency of the second local oscillator signal is 4.63 GHz, the frequency of the thirty-seventh signal Sg37 is 275 MHz to 285 MHz.

[0241] Temperature-compensated attenuator T2 is used to perform temperature-compensated attenuation on the thirty-seventh signal Sg37 to obtain the thirty-eighth signal Sg38.

[0242] Bandpass filter B6 is used to bandpass filter the thirty-eighth signal Sg38 to obtain the thirty-ninth signal Sg39.

[0243] The numerically controlled attenuator D4 is used to attenuate the amplitude of the thirty-ninth signal Sg39 based on the fourth amplitude attenuation value, so as to obtain the fortieth signal Sg40.

[0244] Amplifier AP5 is used to amplify the amplitude of the 40th signal Sg40 to obtain the 41st signal Sg41.

[0245] The power attenuator PA8 is used to attenuate the power of the forty-first signal Sg41 to obtain the forty-second signal Sg42.

[0246] Amplifier AP6 is used to amplify the amplitude of signal Sg42 (forty-second signal) to obtain signal Sg43 (forty-third signal).

[0247] Low-pass filter LB9 is used to perform low-pass filtering on signal Sg43 (forty-third signal) to obtain signal Sg44 (forty-fourth signal).

[0248] Amplifier AP7 is used to amplify the amplitude of the forty-fourth signal Sg44 to obtain the forty-fifth signal Sg45.

[0249] The low-pass filter LB10 is used to perform low-pass filtering on the forty-fifth signal Sg45 to obtain the forty-sixth signal Sg46.

[0250] The power attenuator PA9 is used to attenuate the power of the forty-sixth signal Sg46 to obtain the second intermediate frequency signal.

[0251] exist Figure 7 and Figure 8 In the embodiment, optionally, limiters U1 and U2 can be CLM-83-2W; low-noise amplifiers LP1, LP2, LP3, and LP4 can be TQL9092; digitally controlled attenuators D1, D2, D3, and D4 can be HMC472; low-pass filters LB1, LB2, LB6, and LB7 can be LFCN-3800+; low-pass filters LB3 and LB8 can be LFCN-4400+; low-pass filters LB4, LB5, LB9, and LB10 can be LFCN-225+; power attenuators... Attenuators PA1 and PA5 can be 5dB π-type attenuators; power attenuators PA2, PA3, PA4, PA6, PA7, and PA8 can be 3dB π-type attenuators; power attenuator PA9 can be a 4dB π-type attenuator; mixers S1 and S3 can be HMC787; mixers S2 and S4 can be HMC787A; amplifiers AP1 and AP4 can be PMA3-83LN+; amplifiers AP2, AP3, AP5, AP6, and AP7 can be GALI-3+; temperature-compensated attenuators T1 and T2 can be TCA0604N7.

[0252] Optionally, the adjustable attenuation range of the numerically controlled attenuators D1, D2, D3 and D4 is 0dB to 31.5dB.

[0253] The first amplitude attenuation value, the second amplitude attenuation value, the third amplitude attenuation value, and the fourth amplitude attenuation value can be the same or different.

[0254] Low-noise amplifiers LP1, LP2, LP3, and LP4 are used to control the noise figure of the signal.

[0255] exist Figure 7 and Figure 8 In this embodiment, the direct wave signal is processed by a limiter, a low-noise amplifier, and a filter, and the reflected echo signal is processed by the same limiter, low-noise amplifier, and filter. This enables signal processing functions such as limiting, amplifying, and filtering the signal, ensuring that the direct wave signal or the reflected echo signal is a small signal and can be amplified into a signal that is easy to process, thus preventing the radio frequency signal receiver from burning out when the direct wave signal or the reflected echo signal is a large signal.

[0256] Figure 9 This is a schematic diagram of the signal processor provided in an embodiment of the present invention. Figure 9 As shown, the signal processor includes:

[0257] The analog-to-digital converter AD1 is used to perform analog-to-digital conversion on the first intermediate frequency signal to obtain the first digital signal.

[0258] The analog-to-digital converter AD2 is used to perform analog-to-digital conversion on the second intermediate frequency signal to obtain the second digital signal.

[0259] Programmable array logic (FPGA) chips can perform at least one or more of the following operations:

[0260] Based on the clock synchronization signal, the first digital signal is synchronized to obtain the azimuth synchronization pulse signal and the range synchronization pulse signal;

[0261] The first digital signal is digitally down-converted to obtain the second baseband signal;

[0262] The parameters of the second baseband signal are measured to obtain the signal measurement results. Based on the signal measurement results, Pulse-Description-Word (PDW) data is generated.

[0263] Provide the display and control equipment with radiation source information, including the second baseband signal and PDW data;

[0264] The second digital signal is digitally down-converted to obtain the third baseband signal;

[0265] Based on the azimuth synchronization pulse signal and the range synchronization pulse signal, the third baseband signal is acquired to obtain the first baseband signal.

[0266] Optionally, the radiation source information of the second baseband signal and PDW data can be packaged and provided to the display and control equipment.

[0267] Alternatively, the Field Programmable Gate Array (FPGA) chip can be a low-power, large-scale FPGA chip.

[0268] In some embodiments, the signal processor further includes:

[0269] The second control unit may perform at least one or more of the following operations:

[0270] Receive signal processing information provided by the display and control device. The signal processing information includes a first frequency control word, a second frequency control word, and amplitude attenuation information.

[0271] The signal processing information is parsed to obtain the first frequency control word, the second frequency control word, and the amplitude attenuation information;

[0272] The first control unit is provided with a first frequency control word, a second frequency control word, and amplitude attenuation information;

[0273] The system receives frequency setting information from the display and control device, parses the frequency setting information to obtain the center frequency, and provides the center frequency to the first control unit.

[0274] In some embodiments, the FPGA chip includes a multi-core processor. The multi-core processor may be, for example, a low-power Advanced Reduced Instruction Set Computer (RISC) machine (ARM).

[0275] Running ARM software on a multi-core processor.

[0276] In this embodiment of the invention, a low-power, large-scale FPGA chip is used, which can reduce the size and weight of the device, reduce power consumption, and enable embedded computing.

[0277] In some embodiments, the integrated detection system combining ESM and PCL also includes a power module.

[0278] Optionally, the power supply can be located inside or outside the integrated detection system of ESM and PCL.

[0279] When the power supply is located outside the integrated detection system of ESM and PCL, the power supply is, for example, a power adapter.

[0280] In the case where the power supply is located inside the integrated detection system of ESM and PCL, the power supply is, for example, a power board.

[0281] In some embodiments, the integrated ESM and PCL detection system further includes a chassis for housing the integrated ESM and PCL detection system.

[0282] In some embodiments, the integrated ESM and PCL fusion detection system further includes a chassis for housing a radio frequency signal receiver and a signal processor, thereby forming an integrated ESM and PCL radio frequency signal processing device.

[0283] The following is combined with Figure 10 The workflow of the integrated ESM and PCL detection system provided in this embodiment of the invention will be described.

[0284] Figure 10 This is a flowchart illustrating the workflow of the integrated ESM and PCL detection system provided in this embodiment of the invention. Figure 10 As shown, it includes: task planning and management, equipment control, initialization, startup detection, and fault handling.

[0285] During the task management and planning process, the detection frequency range of the integrated ESM and PCL radio frequency signal processing equipment is set.

[0286] During the equipment control process, the operating parameters of the integrated ESM and PCL radio frequency signal processing equipment are set.

[0287] During initialization, the display and control device's program runs and initializes, the integrated ESM and PCL RF signal processing device and the display and control device perform self-tests. If the hardware is working normally, reception is started; if the hardware is malfunctioning, the device is checked and the fault is handled.

[0288] After initiating detection, the integrated detection system combining ESM and PCL performs the above-mentioned procedures. Figures 2 to 9 The operations shown in the examples.

[0289] The embodiment of the integrated ESM and PCL detection system described above is merely illustrative. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0290] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fusion detection system integrating Electronic Support Measures (ESM) and Passive Coherent Positioning (PCL), characterized in that, include: An integrated radio frequency signal processing device combining ESM and PCL is used to detect radiation sources within a target area, obtain radiation source information, and provide the radiation source information to a display and control device. Based on the center frequency of the target radiation source provided by the display and control device, the reflected echo signal of the target object is received. Based on the reflected echo signal, a first baseband signal is determined and provided to the display and control device. The reflected echo signal is the signal after the target object reflects the direct wave signal of the target radiation source. The display and control device is used to display a list of radiation sources based on the radiation source information, determine a target radiation source in the list of radiation sources, and provide the center frequency of the target radiation source to the integrated ESM and PCL radio frequency signal processing device. The first baseband signal is processed by PCL passive radar target detection to obtain the detection information of the target object, and the detection information is displayed. The integrated ESM and PCL radio frequency signal processing device includes: A radio frequency signal receiver is configured to receive a direct wave signal from a radiation source within the target area via a first antenna, determine a first intermediate frequency signal based on the direct wave signal from the radiation source, and provide the first intermediate frequency signal to a signal processor; and receive a reflected echo signal based on the center frequency point via a second antenna, determine a second intermediate frequency signal based on the reflected echo signal, and provide the second intermediate frequency signal to the signal processor. The signal processor is configured to determine the radiation source information based on the first intermediate frequency signal; and to determine the first baseband signal based on the second intermediate frequency signal. The radio frequency signal receiver includes: The first control unit is used to provide the first frequency control word and the second frequency control word to the local oscillator unit, and to provide amplitude attenuation information to the integrated ESM and PCL frequency conversion channel unit. The local oscillator unit is used to generate a clock synchronization signal and provide the clock synchronization signal to the signal processor; it generates a first local oscillator signal based on the first frequency control word and the center frequency point, generates a second local oscillator signal based on the second frequency control word and the center frequency point, and provides the first local oscillator signal and the second local oscillator signal to the integrated ESM and PCL frequency conversion channel unit; The integrated ESM and PCL frequency conversion channel unit is used to perform signal processing on the direct wave signal based on the first local oscillator signal, the second local oscillator signal, and the amplitude attenuation information to obtain the first intermediate frequency signal; and to perform signal processing on the reflected echo signal based on the first local oscillator signal, the second local oscillator signal, and the amplitude attenuation information to obtain the second intermediate frequency signal.

2. The integrated detection system combining ESM and PCL according to claim 1, characterized in that, The local oscillator unit includes: Crystal Z1 is used to generate a reference clock and provide the reference clock to the power divider PW; The power divider PW is used to provide a first input signal to phase-locked loop PLL1, a second input signal to phase-locked loop PLL2, and a third input signal to phase-locked loop PLL3 based on the reference clock. The phase-locked loop (PLL1) is used to generate the clock synchronization signal based on the first input signal and the center frequency. The phase-locked loop PLL2 is used to adjust the second input signal based on the first frequency control word and the center frequency to obtain the first local oscillator signal; The phase-locked loop (PLL3) is used to adjust the third input signal based on the second frequency control word and the center frequency to obtain the second local oscillator signal.

3. The integrated detection system combining ESM and PCL according to claim 2, characterized in that, The local oscillator unit also includes: A gating device is used to provide the power divider PW with the reference clock generated by the crystal oscillator Z1, or to provide the power divider PW with an externally input reference clock.

4. The integrated detection system combining ESM and PCL according to claim 1, characterized in that, The integrated ESM and PCL frequency converter channel unit includes: The ESM channel processing module is used to perform signal processing on the direct wave signal based on the first local oscillator signal, the second local oscillator signal and the amplitude attenuation information to obtain the first intermediate frequency signal; The PCL channel processing module is used to process the reflected echo signal based on the first local oscillator signal, the second local oscillator signal, and amplitude attenuation information to obtain the second intermediate frequency signal.

5. The integrated detection system combining ESM and PCL according to claim 4, characterized in that, The amplitude attenuation information includes a first amplitude attenuation value and a second amplitude attenuation value; the ESM channel processing module includes: Limiter U1 is used to adjust the amplitude of the direct wave signal to obtain the first signal; Low-noise amplifier LP1 is used to amplify the first signal with low noise to obtain the second signal; The numerically controlled attenuator D1 is used to attenuate the amplitude of the second signal based on the first amplitude attenuation value to obtain the third signal; Bandpass filter B1 is used to perform bandpass filtering on the third signal to obtain the fourth signal; Low-noise amplifier LP2 is used to amplify the fourth signal with low noise to obtain the fifth signal; Low-pass filter LB1 is used to perform low-pass filtering on the fifth signal to obtain the sixth signal; Power attenuator PA1 is used to attenuate the power of the sixth signal to obtain the seventh signal; Low-pass filter LB2 is used to perform low-pass filtering on the seventh signal to obtain the eighth signal; Mixer S1 is used to mix the first local oscillator signal and the eighth signal to obtain the ninth signal; Power attenuator PA2 is used to attenuate the power of the ninth signal to obtain the tenth signal; Bandpass filter B2 is used to bandpass filter the tenth signal to obtain the eleventh signal; Amplifier AP1 is used to amplify the eleventh signal to obtain the twelfth signal. Low-pass filter LB3 is used to perform low-pass filtering on the twelfth signal to obtain the thirteenth signal; Power attenuator PA3 is used to attenuate the power of the thirteenth signal to obtain the fourteenth signal; Mixer S2 is used to mix the second local oscillator signal and the fourteenth signal to obtain the fifteenth signal; Temperature-compensated attenuator T1 is used to process the fifteenth signal to obtain the sixteenth signal; Bandpass filter B3 is used to bandpass filter the sixteenth signal to obtain the seventeenth signal; The numerically controlled attenuator D2 is used to process and attenuate the amplitude of the seventeenth signal based on the second amplitude attenuation value to obtain the eighteenth signal; Amplifier AP2 is used to amplify the amplitude of the eighteenth signal to obtain the nineteenth signal; Low-pass filter LB4 is used to perform low-pass filtering on the nineteenth signal to obtain the twentieth signal; Amplifier AP3 is used to amplify the amplitude of the twentieth signal to obtain the twenty-first signal; Low-pass filter LB5 is used to perform low-pass filtering on the twenty-first signal to obtain the twenty-second signal; The power attenuator PA4 is used to attenuate the power of the twentieth signal to obtain the first intermediate frequency signal.

6. The integrated detection system combining ESM and PCL according to claim 4, characterized in that, The amplitude attenuation information includes a third amplitude attenuation value and a fourth amplitude attenuation value; the PCL channel processing module includes: Limiter U2 is used to adjust the amplitude of the reflected echo signal to obtain the twenty-third signal; Low-noise amplifier LP3 is used to amplify the twenty-third signal with low noise to obtain the twenty-fourth signal; The numerically controlled attenuator D3 is used to attenuate the amplitude of the twenty-fourth signal based on the third amplitude attenuation value to obtain the twenty-fifth signal; Bandpass filter B4 is used to perform bandpass filtering on the twenty-fifth signal to obtain the twenty-sixth signal; Low-noise amplifier LP4 is used to amplify the twenty-sixth signal with low noise to obtain the twenty-seventh signal; Low-pass filter LB6 is used to perform low-pass filtering on the twenty-seventh signal to obtain the twenty-eighth signal; Power attenuator PA5 is used to attenuate the power of the twenty-eighth signal to obtain the twenty-ninth signal; Low-pass filter LB7 is used to perform low-pass filtering on the twenty-ninth signal to obtain the thirtieth signal; Mixer S3 is used to mix the first local oscillator signal and the thirtieth signal to obtain the thirty-first signal; Power attenuator PA6 is used to attenuate the power of the thirty-first signal to obtain the thirty-second signal; Bandpass filter B5 is used to perform bandpass filtering on the thirty-second signal to obtain the thirty-third signal; Amplifier AP4 is used to amplify the amplitude of the thirty-third signal to obtain the thirty-fourth signal; Low-pass filter LB8 is used to perform low-pass filtering on the thirty-fourth signal to obtain the thirty-fifth signal; Power attenuator PA7 is used to attenuate the power of the thirty-fifth signal to obtain the thirty-sixth signal; Mixer S4 is used to process the second local oscillator signal and the thirty-sixth signal to obtain the thirty-seventh signal; Temperature-compensated attenuator T2 is used to perform temperature-compensated attenuation on the thirty-seventh signal to obtain the thirty-eighth signal; Bandpass filter B6 is used to perform bandpass filtering on the thirty-eighth signal to obtain the thirty-ninth signal; The numerically controlled attenuator D4 is used to attenuate the amplitude of the thirty-ninth signal based on the fourth amplitude attenuation value to obtain the fortieth signal; Amplifier AP5 is used to amplify the amplitude of the fortieth signal to obtain the forty-first signal; Power attenuator PA8 is used to attenuate the power of the forty-first signal to obtain the forty-second signal; Amplifier AP6 is used to amplify the amplitude of the forty-second signal to obtain the forty-third signal; Low-pass filter LB9 is used to perform low-pass filtering on the forty-third signal to obtain the forty-fourth signal; Amplifier AP7 is used to amplify the amplitude of the forty-fourth signal to obtain the forty-fifth signal; Low-pass filter LB10 is used to perform low-pass filtering on the forty-fifth signal to obtain the forty-sixth signal; The power attenuator PA9 is used to attenuate the power of the forty-sixth signal to obtain the second intermediate frequency signal.

7. The integrated detection system combining ESM and PCL according to claim 1, characterized in that, The signal processor includes: Analog-to-digital converter AD1 is used to perform analog-to-digital conversion on the first intermediate frequency signal to obtain a first digital signal; The analog-to-digital converter AD2 is used to perform analog-to-digital conversion on the second intermediate frequency signal to obtain a second digital signal; A programmable array logic (FPGA) chip is used to synchronize the first digital signal based on the clock synchronization signal to obtain an azimuth synchronization pulse signal and a range synchronization pulse signal; perform digital down-conversion on the first digital signal to obtain a second baseband signal; perform parameter measurement on the second baseband signal to obtain signal measurement results; generate pulse descriptor word (PDW) data based on the signal measurement results; provide the radiation source information including the second baseband signal and the PDW data to the display and control device; perform digital down-conversion on the second digital signal to obtain a third baseband signal; and perform signal acquisition on the third baseband signal based on the azimuth synchronization pulse signal and the range synchronization pulse signal to obtain the first baseband signal.

8. The integrated detection system combining ESM and PCL according to claim 7, characterized in that, The signal processor also includes: The second control unit receives signal processing information provided by the display and control device. The signal processing information includes the first frequency control word, the second frequency control word, and the amplitude attenuation information. The control unit parses the signal processing information to obtain the first frequency control word, the second frequency control word, and the amplitude attenuation information, and provides the first frequency control word, the second frequency control word, and the amplitude attenuation information to the first control unit. The system receives frequency setting information provided by the display and control device, parses the frequency setting information to obtain the center frequency, and provides the center frequency to the first control unit.

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