Target reconnaissance and interference integrated device for low, slow and small aircraft

Abstract

The invention discloses a low-slow small aircraft target reconnaissance and interference integrated device, and the device comprises a plurality of receiving and transmitting antennas which are used for obtaining a collection signal, and transmitting an interference signal after the signal amplification; the high-power switches are connected with the transceiving antennas in a one-to-one correspondence manner and are used for switching received and transmitted signals; the microwave transceiving unit is connected with the high-power switch and is used for acquiring the acquired signal and filtering the acquired signal; the signal processing unit is connected with the microwave transceiving unit and is used for processing the filtered acquisition signal to obtain a target signal and a trigger interference signal and transmitting the target signal and the trigger interference signal to the microwave transceiving unit; and the microwave power amplifier is connected with the microwave transceiving unit and the high-power switch and is used for amplifying the interference signal. Through the scheme, the device has the advantages of simple structure, high sensitivity, accuracy, reliability and the like, and has very high practical value and popularization value in the technical field of reconnaissance interference.

Description

Technical Field

[0001] The present invention relates to the technical field of reconnaissance and jamming, and in particular to an integrated device for reconnaissance and jamming of low-speed, slow and small aircraft targets. Background Art

[0002] The flight altitude of the "low, slow and small" aircraft of this technology is generally below 1,500 meters, which belongs to the low-altitude detection range. Low, slow and small aircraft have the advantages of small size, stealth, low cost and high flight flexibility. Conventional radar detection is greatly affected by the curvature of the earth and the shielding angle of ground objects, and ground clutter signals often cover target signals. Optical instrument detection and visual observation search are affected or blocked by ground objects such as tall buildings in the city and surrounding mountains, with limited detection distance and difficulty in continuous tracking and positioning. In addition, "low, slow and small" aircraft of medium and low technical levels are usually easy to assemble, quick to deploy, short flight preparation time, low requirements for take-off site conditions, and can take off and land flexibly from rooftops, open areas, streets or water surfaces at short distances; while high-tech "low, slow and small" aircraft have strong concealment and penetration capabilities, and with high-altitude, high-speed or sea-based long-range carrier launch platforms, the timing and methods of penetration are more flexible and diverse. At the same time, most "low, slow and small" aircraft have good ultra-low altitude maneuverability, their routes are generally not fixed, and they often launch sudden attacks from a single point or multiple points in the dark, with no obvious prior signs and lack of specific flight patterns, making it difficult to respond effectively.

[0003] At present, the aircraft target reconnaissance jamming technology in the prior art is such as the public technology of "publication number CN111698055A, named a signal jamming system and portable signal reconnaissance jamming device", which includes: at least two sets of RF front-end processing units; at least two sets of intermediate frequency baseband signal processing units; and CPU / ARM control unit; the signal received by the input antenna is connected to the first RF front-end processing unit and the first intermediate frequency baseband signal processing unit in sequence and then enters the CPU / ARM control unit, and the CPU / ARM control unit processes the signal and then sends it to the output antenna through the second RF front-end processing unit and the second intermediate frequency baseband signal processing unit in sequence. The disadvantages of this technology are that the working bandwidth is narrow, the processing time is relatively long, and the system sensitivity is relatively low, which is not conducive to long-distance work.

[0004] Therefore, there is an urgent need to propose an integrated device for reconnaissance and jamming of low-speed, slow and small aircraft targets with a simple structure and high sensitivity. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide a low-speed, slow and small aircraft target reconnaissance and jamming integrated device, and the technical solution adopted by the present invention is as follows:

[0006] A low-speed, slow, and small aircraft target reconnaissance and jamming integrated device, comprising:

[0007] Several transmitting and receiving antennas acquire the collected signal and transmit the interference signal after the signal is amplified;

[0008] A high-power switch is connected to the transceiver antennas one by one, and switches between receiving and transmitting signals;

[0009] The microwave transceiver unit is connected to the high-power switch to obtain the collected signal and perform filtering processing;

[0010] The signal processing unit is connected to the microwave transceiver unit, processes the filtered collected signal, obtains the target signal, triggers the interference signal and transmits it to the microwave transceiver unit;

[0011] The microwave power amplifier is connected to the microwave transceiver unit and the high-power switch, and amplifies the interference signal.

[0012] Furthermore, the microwave transceiver unit includes several receiving channels and transmitting channels corresponding to the transceiver antenna; the receiving channel includes a limiter, a first filter, a first amplifier, a first fixed attenuator, a first programmable attenuator, a first equalizer, a second amplifier, a second fixed attenuator and a second filter connected in sequence; the limiter is connected to a high-power switch; the second filter is connected to a signal processing unit. Among them, the first filter presents a bandpass characteristic to filter out signals outside the passband. Its passband frequency is 400-6000MHz; the first amplifier and the second amplifier both present the characteristics of low noise, high gain and high output P-1. Its noise coefficient meets the characteristics of ≤1.5dB within the working frequency band; gain ≥19dB; output P-1 ≥20dBm. The first fixed attenuator and the second fixed attenuator have the characteristics of low standing wave coefficient. Its standing wave decimal is ≤1.2dB. Fixed attenuation is 3dB; the first programmable attenuator mainly adjusts the gain of the link, and it has an adjustable range of 30dB. The first equalizer has the characteristics of low loss and low standing wave coefficient, and the typical standing wave coefficient is less than 1.2; the selection of the second filter is based on the frequency band of different antennas, and the passband frequencies here are 0.4-1GHz, 1-3GHz and 3-6GHz respectively.

[0013] The transmitting channel includes a third filter, a third amplifier, a third fixed attenuator, a second programmable attenuator, a second equalizer, a fourth amplifier, a fourth fixed attenuator and a fourth filter which are connected in sequence; the third filter is connected to a signal processing unit; and the fourth filter is connected to a microwave power amplifier.

[0014] Among them, the third filter and the fourth filter are mainly used to filter harmonics and spurious signals. The selection is based on the antenna segmentation, and the passband frequencies are 0.4-1GHz, 1-3GHz and 3-6GHz respectively; the third amplifier and the fourth amplifier have the characteristics of low noise and high output P-1, and their noise figure is <2dB, and the output P-1 is >20dB. The third fixed attenuator and the fourth fixed attenuator have the characteristics of low standing wave coefficient. The standing wave fraction is ≤1.2dB. The fixed attenuation is 3dB; the second programmable attenuator is mainly used to adjust the gain of the link, and it has an adjustable range of 30dB. The second equalizer has the characteristics of low loss and low standing wave coefficient, and the typical standing wave coefficient is <1.2.

[0015] Furthermore, the limiting power of the limiter is 15dBm.

[0016] Furthermore, the microwave power amplifier comprises a fifth filter, a fifth amplifier, a fifth fixed attenuator, a driving amplifier and a power amplifier which are connected in sequence; the fifth filter is connected to the fourth filter; and the power amplifier is connected to the high-power switch.

[0017] Among them, the fifth filter is used to filter out some harmonics and clutter, and is segmented according to the antenna frequency band. The filter passbands are 0.4-1GHz, 1-3GHz and 3-6GHz respectively; the fifth fixed attenuator is a 3dB fixed attenuation, which is used for amplifier output matching; the fifth amplifier has the characteristics of high output P-1, and the amplifier output P-1 here is greater than 25dBm; the driving amplifier is used to provide an excitation signal to the power amplifier, and the output power of the driving amplifier here is greater than 40dBm; the power amplifier is used for power output, and the output power of the power amplifier here is greater than 50dBm.

[0018] Furthermore, the signal processing unit includes:

[0019] An ADC module is connected to the second filter to obtain the collected signal and perform analog-to-digital conversion;

[0020] The FPGA module is connected to the ADC module to obtain the acquired signal of analog-to-digital conversion and extract the target signal; trigger the interference signal;

[0021] The DAC module is connected to the FPGA module, obtains the interference signal sent down by the FPGA module, and performs digital-to-analog conversion;

[0022] The PLL module is connected with the ADC module and the DAC module and generates a clock signal;

[0023] The FLASH module is connected to the FPGA module and stores the program of the FPGA module;

[0024] The EMMC module is connected with the ADC module and the DAC module for data storage.

[0025] Furthermore, the FPGA module obtains the collected signal of analog-to-digital conversion and extracts the target signal using the following process:

[0026] Acquire the collected signal of analog-to-digital conversion, and use a sliding window to cut it into several data segments;

[0027] Perform high-speed real-time FFT preprocessing on any data segment to extract spectrum data;

[0028] Perform signal detection and parameter estimation on any spectrum data; perform signal pulse detection based on the signal strength of the spectrum data and the difference between the noise units, and estimate the intermediate frequency, bandwidth, pulse width and power intensity of any signal pulse; perform cluster analysis based on the pulse characteristic parameters of the signal pulse, estimate the pulse statistical distribution and pulse-to-pulse characteristics of the signal pulse, and store the detection results in the buffer area;

[0029] The detected signal pulse in the buffer area is compared with the preset target signal feature library; the Bayesian probability matching algorithm is used to compare the pulse characteristic parameters of the detected signal pulse with each characteristic parameter of the target signal feature library one by one, the matching probability is calculated, and the model data corresponding to the maximum matching probability is taken to obtain the target signal.

[0030] Further, the FPGA module triggers the interference signal, using the following process:

[0031] Carrier frequency extraction and aircraft model identification based on aircraft model data;

[0032] Compare the preset identification library according to carrier frequency and aircraft model;

[0033] Get the model data in the recognition library and load the interference waveform.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] (1) The present invention sets a transceiver antenna, a high-power switch, a microwave transceiver unit, a signal processing unit and a microwave power amplifier, uses the transceiver antenna to obtain the collected signal, and transmits it to the microwave transceiver unit through the high-power switch. The signal is amplified and filtered by the receiving channel of the microwave transceiver unit and then sent to the signal processing unit for analysis. The present invention identifies the target signal by comparing it with the target library; then the signal processing unit generates a modulated interference signal, and the interference signal is amplified and filtered from the transmitting channel of the microwave transceiver unit and then amplified by the microwave power amplifier. Then it is radiated and output through the transceiver antenna to achieve the purpose of target reconnaissance and interference.

[0036] (2) The present invention sets a high-power switch for switching between transmission and reception, which has the characteristics of low insertion loss and high power tolerance. In addition, the present invention uses a limiter, a first filter, a first amplifier, a first fixed attenuator, a first programmable attenuator, a first equalizer, a second amplifier, a second fixed attenuator and a second filter connected in sequence as a receiving channel for amplifying and filtering the collected signal, and the receiving channel has the characteristics of low noise and high gain.

[0037] (3) The present invention uses a third filter, a third amplifier, a third fixed attenuator, a second programmable attenuator, a second equalizer, a fourth amplifier, a fourth fixed attenuator and a fourth filter as a transmission channel, which has the characteristics of high gain and high power.

[0038] (4) The present invention uses a fifth filter, a fifth amplifier, a fifth fixed attenuator, a driving amplifier and a power amplifier as a microwave power amplifier, which are used to further amplify the interference signal amplified by the transmission channel of the microwave transceiver unit to achieve the effect of long-distance interference target.

[0039] (5) The present invention uses the Bayesian probability matching algorithm to compare the characteristic parameters of the signal with each characteristic parameter of the target signal characteristic library, calculate the matching probability, and take the model data corresponding to the maximum matching probability. Then load the interference waveform to realize the output of the interference signal; the advantage is that it can flexibly output interference for different frequencies, which can improve the overall interference efficiency and have a significant interference effect.

[0040] In summary, the present invention has the advantages of simple structure, high sensitivity, accuracy and reliability, and has high practical value and promotion value in the field of reconnaissance and jamming technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope of protection. For those skilled in the art, other related drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 It is a schematic diagram of the present invention.

[0043] Figure 2 It is a schematic diagram of the receiving channel in the present invention.

[0044] Figure 3 It is a schematic diagram of the transmitting channel in the present invention.

[0045] Figure 4 It is the principle diagram of the microwave power amplifier in the present invention.

[0046] Figure 5 It is a schematic diagram of the signal processing unit in the present invention.

[0047] Figure 6 It is a time-frequency spectrum diagram of a certain UAV image transmission signal in the present invention.

[0048] Figure 7 This is a demodulated constellation diagram for a certain UAV in the present invention.

[0049] Figure 8 This is a gain test diagram of the receiving channel of the present invention.

[0050] Fig. 9 This is a sensitivity test diagram of the receiving channel of the present invention.

[0051] Fig.10 This is a gain test diagram of the transmitting channel of the present invention. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical scheme and advantages of this application clearer, the present invention is further described below in conjunction with the accompanying drawings and embodiments, and the embodiments of the present invention include but are not limited to the following embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0053] In this embodiment, the term "and / or" is merely a term used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0054] The terms "first" and "second" in the description and claims of this embodiment are used to distinguish different objects rather than to describe a specific order of objects. For example, a first target object and a second target object are used to distinguish different target objects rather than to describe a specific order of target objects.

[0055] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0056] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more than two. For example, multiple processing units refer to two or more processing units; multiple systems refer to two or more systems.

[0057] like Figures 1 to 10 As shown, this embodiment provides a low, slow and small aircraft target reconnaissance and jamming integrated device, which includes a transceiver antenna, a high-power switch, a microwave transceiver unit, a signal processing unit and a microwave power amplifier. Here, the high-power switch is connected to the transceiver antenna. After the signal is received from the transceiver antenna, it is sent to the microwave transceiver unit through the high-power switch. The signal is amplified and filtered by the receiving channel of the microwave transceiver unit and then sent to the signal processing unit for analysis. After the signal processing unit performs digital down-conversion into an IQ signal, the IQ signal is extracted, filtered and processed. This embodiment extracts the target signal characteristic signal, compares it with the target library, and identifies the target signal. Subsequently, the signal processing unit generates a modulated interference signal, and the interference signal is amplified and filtered from the transmitting channel of the microwave transceiver unit, and then amplified by the microwave power amplifier. Subsequently, the transceiver antenna radiates the output to achieve the purpose of target reconnaissance and jamming.

[0058] In this embodiment, the transceiver antenna is used to receive and interfere with external target signals. This embodiment shows three frequency bands, and theoretically can meet N frequency bands (N≥1). The three frequency bands are: 400MHz~1000MHz, 1000MHz~3000MHz and 3000MHz~6000MHz.

[0059] In this embodiment, the high-power switch is connected to the transceiver antenna in a one-to-one correspondence and switches the receiving and transmitting signals. The switching speed of the high-power switch is 15ms, the insertion loss is less than 0.4dB, the withstand power is greater than 150W, and the transceiver isolation is greater than 65dB.

[0060] In this embodiment, the microwave transceiver unit is composed of a receiving channel and a transmitting channel. The receiving channel is connected to a limiter, a first filter, a first amplifier, a first fixed attenuator, a first programmable attenuator, a first equalizer, a second amplifier, a second fixed attenuator, and a second filter in sequence; the transmitting channel is connected to a third filter, a third amplifier, a third fixed attenuator, a second programmable attenuator, a second equalizer, a fourth amplifier, a fourth fixed attenuator, and a fourth filter in sequence. The limiter limits the power of the acquisition signal received by the transceiver antenna and sends it to the filter and amplifier for filtering and amplification. The limiting power of the limiter is 15dBm. The first filter, the second filter, the third filter, and the fourth filter are used for filtering each channel, filtering clutter, harmonics, etc. Here, the amplified acquisition signal passes through the programmable attenuator and the equalizer and then enters the amplifier for power amplification. The amplified signal is filtered out by the filter to remove harmonics and clutter and then sent to the signal processing unit for data analysis. The advantages of the limiter used in this embodiment are low insertion loss, small return loss, and high input-output isolation. The limiter can improve the linear sensitivity of the receiving channel. In addition, the first amplifier and the second amplifier used in this embodiment have the advantages of low noise figure, high gain, high 1dB compression point and high third-order intermodulation, so as to prevent the large signal (collection signal) transmitted by the transceiver antenna from saturating the low-noise amplification and affecting the receiving sensitivity of the system. In addition, the programmable attenuator used in this embodiment has the characteristics of low insertion loss, high 1dB compression point and high third-order intermodulation. The main function of the filter used in this embodiment is to suppress the received noise and harmonic signals.

[0061] In this embodiment, the main function of the transmission channel is to amplify and filter the interference signal generated by the signal processing unit to ensure that the interference signal of the microwave power amplifier can normally drive the power amplifier of the microwave power amplifier. Specifically, the transmission channel includes a third filter, a third amplifier, a third fixed attenuator, a second programmable attenuator, a second equalizer, a fourth amplifier, a fourth fixed attenuator and a fourth filter connected in sequence. Among them, the third amplifier and the fourth amplifier use medium power amplifiers, and their main function is to ensure that the input power of the microwave power amplifier can normally drive the power amplifier. In addition, the third fixed attenuator and the fourth fixed attenuator are mainly used for amplifier output standing wave matching and multi-integral link gain matching, which usually use 3dB fixed attenuators.

[0062] In this embodiment, the microwave power amplifier is connected to the microwave transceiver unit and the high-power switch, and amplifies the interference signal. It includes a fifth filter, a fifth amplifier, a fifth fixed attenuator, a driver amplifier, and a power amplifier connected in sequence. Here, the fifth filter is used to filter out the clutter and harmonics after the microwave transceiver unit transmit channel is amplified. The fifth amplifier is used to amplify the signal of the microwave transceiver unit transmit channel. The fifth fixed attenuator and the sixth fixed attenuator are used for standing wave matching between amplifiers to prevent the amplifier cascade standing wave coefficient from deteriorating and burning the amplifier. The driver amplifier of this embodiment is used to amplify the signal on the link to ensure that the signal output by the driver amplifier can normally drive the power amplifier of the subsequent stage. The power amplifier of this embodiment is used to amplify the signal and output it to ensure that the output power can normally interfere with the target.

[0063] In this embodiment, the signal processing unit includes: an ADC module, an FPGA module, a DAC module, a PLL module, a FLAH module and an EMMC module. The FPGA module of this embodiment obtains the acquisition signal of the analog-to-digital conversion and extracts the target signal, using the following process:

[0064] The first step is to obtain the collected signal of analog-to-digital conversion and use a sliding window to cut it into several data segments.

[0065] In the second step, all data segments are preprocessed by high-speed real-time FFT to extract spectrum data.

[0066] The third step is to perform signal detection and parameter estimation on any spectrum data; perform signal pulse detection based on the signal strength of the spectrum data and the difference in noise units, and estimate the intermediate frequency, bandwidth, pulse width and power intensity of any signal pulse; perform cluster analysis based on the pulse characteristic parameters of the signal pulse, estimate the pulse statistical distribution and inter-pulse characteristics of the signal pulse, and store the detection results in the buffer area.

[0067] The fourth step is to compare the detected signal pulses in the buffer area with the preset target signal feature library; use the Bayesian probability matching algorithm to compare the pulse characteristic parameters of the detected signal pulses with each characteristic parameter of the target signal feature library one by one, calculate the matching probability, and take the model data corresponding to the maximum matching probability to obtain the target signal.

[0068] In this embodiment, the FPGA module triggers the interference signal, using the following process:

[0069] (1) Extract the carrier frequency and identify the aircraft type of the target through reconnaissance and identification.

[0070] (2) Compare and identify the library based on carrier frequency and aircraft model.

[0071] (3) Load the interference waveform according to the model data in the library (for models not in the library, load the interference waveform data of the general frequency band).

[0072] (4) The waveform file is loaded and waiting for the interference sending instruction.

[0073] (5) FPGA sends the waveform file to DAC for interference output.

[0074] In this embodiment, an interference test is performed, and the test data is shown in Table 1:

[0075] Table 1 Interference test data

[0076] frequency Interference distance Drone pilot distance Dry-Through 2400 5.5 800 6.875 5800 5 800 6.25

[0077] from Figures 6 to 10 As can be seen from Table 1, the gain of the receiving channel is between 30.4 and 32.6 dB, and its sensitivity is between -109 and -103 dBm, and the gain of the transmitting channel is between 22 and 26.4 dB. The sensitivity meets the reconnaissance requirements of low-speed, slow, and small aircraft targets at 5 km, and the interference-to-interference ratio meets the requirement of >5:1. It can achieve long-range reconnaissance and interference of low-speed, slow, and small aircraft. In the later stage, the reconnaissance distance and interference-to-interference ratio of low-speed, slow, and small aircraft can be improved by increasing the antenna gain without changing the microwave transceiver unit and the signal processing unit.

[0078] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any changes that adopt the design principles of the present invention and are made through non-creative labor on this basis should fall within the protection scope of the present invention.

Claims

1. A low-speed, slow, and small aircraft target reconnaissance and jamming integrated device, characterized in that: include: Several transmitting and receiving antennas acquire the collected signal and transmit the interference signal after the signal is amplified; A high-power switch is connected to the transceiver antennas one by one, and switches between receiving and transmitting signals; The microwave transceiver unit is connected to the high-power switch to obtain the collected signal and perform filtering processing; The signal processing unit is connected to the microwave transceiver unit, processes the filtered collected signal, obtains the target signal, triggers the interference signal and transmits it to the microwave transceiver unit; The microwave power amplifier is connected to the microwave transceiver unit and the high-power switch, and amplifies the interference signal.

2. The low-speed, slow, and small aircraft target reconnaissance and jamming integrated device according to claim 1 is characterized in that: The microwave transceiver unit includes several receiving channels and transmitting channels corresponding to the transceiver antenna; the receiving channel includes a limiter, a first filter, a first amplifier, a first fixed attenuator, a first programmable attenuator, a first equalizer, a second amplifier, a second fixed attenuator and a second filter connected in sequence; the limiter is connected to a high-power switch; the second filter is connected to a signal processing unit; The transmitting channel includes a third filter, a third amplifier, a third fixed attenuator, a second programmable attenuator, a second equalizer, a fourth amplifier, a fourth fixed attenuator and a fourth filter which are connected in sequence; the third filter is connected to a signal processing unit; and the fourth filter is connected to a microwave power amplifier.

3. The low-speed, slow, and small aircraft target reconnaissance and jamming integrated device according to claim 2 is characterized in that: The limiting power of the limiter is 15dBm.

4. The low-speed, slow, and small aircraft target reconnaissance and jamming integrated device according to claim 2 is characterized in that: The microwave power amplifier comprises a fifth filter, a fifth amplifier, a fifth fixed attenuator, a driving amplifier and a power amplifier which are connected in sequence; the fifth filter is connected to the fourth filter; and the power amplifier is connected to the high-power switch.

5. A low-speed, slow, and small aircraft target reconnaissance and jamming integrated device according to claim 2, 3, or 4, characterized in that: The signal processing unit comprises: An ADC module is connected to the second filter to obtain the collected signal and perform analog-to-digital conversion; The FPGA module is connected to the ADC module to obtain the acquired signal of analog-to-digital conversion and extract the target signal; trigger the interference signal; The DAC module is connected to the FPGA module, obtains the interference signal sent down by the FPGA module, and performs digital-to-analog conversion; The PLL module is connected with the ADC module and the DAC module and generates a clock signal; The FLASH module is connected to the FPGA module and stores the program of the FPGA module; The EMMC module is connected with the ADC module and the DAC module for data storage.

6. The low-speed, slow, and small aircraft target reconnaissance and jamming integrated device according to claim 5 is characterized in that: The FPGA module acquires the collected signal of analog-to-digital conversion and extracts the target signal using the following process: Acquire the collected signal of analog-to-digital conversion, and use a sliding window to cut it into several data segments; Perform high-speed real-time FFT preprocessing on any data segment to extract spectrum data; Perform signal detection and parameter estimation on any spectrum data; perform signal pulse detection based on the signal strength of the spectrum data and the difference between the noise units, and estimate the intermediate frequency, bandwidth, pulse width and power intensity of any signal pulse; perform cluster analysis based on the pulse characteristic parameters of the signal pulse, estimate the pulse statistical distribution and pulse-to-pulse characteristics of the signal pulse, and store the detection results in the buffer area; The detected signal pulse in the buffer area is compared with the preset target signal feature library; the Bayesian probability matching algorithm is used to compare the pulse characteristic parameters of the detected signal pulse with each characteristic parameter of the target signal feature library one by one, the matching probability is calculated, and the model data corresponding to the maximum matching probability is taken to obtain the target signal.

7. The low-speed, slow, and small aircraft target reconnaissance and jamming integrated device according to claim 6 is characterized in that: The FPGA module triggers the interference signal using the following process: Carrier frequency extraction and aircraft model identification based on aircraft model data; Compare the preset identification library according to carrier frequency and aircraft model; Get the model data in the recognition library and load the interference waveform.

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