General detection equipment for outfield test of airborne self-defense electronic countermeasure system

Abstract

The invention relates to general detection equipment for an external field test of an airborne self-defense confrontation system, and belongs to the technical field of general detection equipment. Comprising a radar signal radiator, a signal receiver and a handheld control terminal. The radar signal radiator is used for simulating and generating multi-system complex radar signals, and testing the radar alarm function and performance of the airborne electronic countermeasure system. The signal receiver is used for receiving and measuring an active interference signal emitted by the electronic countermeasure system, and testing the airborne active interference function and performance; and the handheld control terminal communicates with the radar signal radiator through the internet access, so that output signal parameter editing of the radar signal radiator is realized. According to the invention, unit-level, middle-team-level and large-team-level functions, performance detection and fault positioning of the outfield in-situ airborne self-defense electronic countermeasure system can be completed through cutting or combined use, the equipment has the characteristics of miniaturization, hand-held type, convenient operation and the like, and the outfield rapid guarantee capability of airborne equipment is effectively improved.

Description

Technical Field

[0001] The invention relates to a universal detection device for field testing of an airborne self-defense countermeasure system, belonging to the technical field of universal detection devices. Background Art

[0002] The airborne self-defense electronic countermeasure system is a common electronic countermeasure equipment for modern fighters. It is used for the self-defense of aircraft and is a basic means to improve the battlefield survivability of combat aircraft. The airborne self-defense electronic countermeasure system can provide all-round warnings to the enemy aircraft and weapon system radars in the air defense system that threaten the carrier aircraft, issue missile approach warnings to missiles threatening the carrier aircraft from behind, and implement active and passive interference to protect the safety of the carrier aircraft and improve the survivability of the carrier aircraft in combat.

[0003] Airborne self-defense electronic countermeasures system is the only autonomous means for combat aircraft to detect the enemy first and preserve themselves. The correctness of radar warning function and active jamming function / performance has a significant impact on the effectiveness of airborne self-defense electronic countermeasures system. At present, maintenance work mainly relies on on-board BIT to judge whether the electronic countermeasures system is normal. However, due to the limitations of industrial level and design ideas, there are many components in the current airborne electronic countermeasures equipment that cannot be fully tested by BIT, and these components (such as antennas and RF feeders) have a significant impact on the overall performance of the system, which may cause the overall performance of the system to fail to meet combat requirements.

[0004] Traditional automatic detection requires the removal of airborne equipment for off-site testing. The drawback of this approach is that it assumes that if each component meets the required performance criteria, the entire system is operating normally, which is not in line with objective reality. Therefore, additional testing is required outside of BIT to ensure that hidden faults of airborne electronic countermeasure equipment can be discovered. Currently, there are many types of detection equipment, with large differences in functions, forms, and usage methods. There is a lack of interoperability and no user management and use. Summary of the invention

[0005] The present invention detects the radar warning and active jamming functions in the airborne self-defense electronic countermeasure system, and develops a handheld and portable detection device suitable for field use, ensuring that the airborne electronic countermeasure equipment can be quickly detected in situ, so as to timely grasp the performance status of the equipment and help discover and locate faults. The content of the present invention can be cut or used in combination to meet the needs of different levels of field maintenance and support, and the size is compact and portable, effectively reducing the types and number of detection equipment.

[0006] A universal detection device for field in-situ testing of an airborne self-defense electronic countermeasure system, which is special in that it comprises a radar signal radiator 1, a signal receiver 2, and a handheld control terminal 3. The radar signal radiator 1, the signal receiver 2, and the handheld control terminal 3 are used independently or in combination. When used in combination, the handheld control terminal 3 communicates with the radar signal radiator 1 through a network port to edit the output signal parameters of the radar signal radiator 1, communicates with the signal receiver 2 through the network port to display the test results, and communicates with the object under test through a serial port to realize interactive control of the test process. The radar signal radiator 1 is used to simulate and generate a single or multiple multi-system complex radar signals, and realize the electromagnetic signals required for the radar warning function and active jamming function and performance test of the airborne electronic countermeasure system; The signal receiver 2 is used to receive and measure the active jamming signal radiated by the airborne electronic countermeasure system, so as to test the function and performance of the airborne active jamming system; The handheld control terminal 3 is used for editing the output signal parameters of the radar signal radiator, displaying the test results, and interactively controlling the test process.

[0007] Preferably, the radar signal radiator 1 includes an intermediate frequency and control module 19, a radar signal generating module 4, a coaxial switch 5, a broadband antenna 6, a first battery 10, an indicator light 7, a first power module 8, and a first power interface 9; The intermediate frequency and control module 19, with ZYNQ as the core, is equipped with high-speed AD / DA, Gigabit network port and HDMI interface, realizing functions such as control, logic processing, signal transmission and reception and display, and receiving radar signal characteristic parameters sent by the handheld control terminal 3 through the network port; The radar signal generating module 4 generates a radar signal of 0.7 GHz to 40 GHz according to the radar pulse description word sent by the intermediate frequency and control module; The coaxial switch 5 transfers the radar signal generated by the radar signal generating module 4 to the broadband antenna 6 according to three channels: 0.7 GHz ~ 1.4 GHz, 2 GHz ~ 18 GHz (5-channel synthesis), and 18 GHz -40 GHz; The broadband antenna 6 radiates the simulated radar signal into space; The indicator light 7 is used to indicate the working status of the radar signal radiator 1; The power module 8 converts the 28V power supply connected to the first power interface 9 into 12V and 5V voltages to supply power to the internal devices of the radar signal radiator 1; The first battery 10 supplies power to the internal devices of the radar signal radiator 1 when there is no external power supply.

[0008] Preferably, the signal receiver 2 includes an intermediate frequency and control module 11, a radar signal generating module 12, a mixer 13, a filter 14, a variable gain amplifier 15, a receiving antenna 16, a second power supply module 17, and a second battery 20.

[0009] The intermediate frequency and control module 11 receives the mixing local oscillator frequency from the network port, controls the radar signal generation module 12 to output a local oscillator signal of 8-18 GHz; receives the current signal power from the network port, calculates the gain control code of the variable gain amplifier, and controls the variable gain amplifier to perform AGC automatic gain control; The radar signal generating module 12 generates a local oscillator signal of 8 GHz to 18 GHz; The mixer 13 performs mixing processing on the received radar signal and the local oscillator signal generated by the radar signal generating module 12; The filter 14 performs low-pass filtering on the mixed signal; The variable gain amplifier 15 performs power control on the filtered intermediate frequency signal and adjusts it to a certain fixed power; The receiving antenna 16 is a broadband receiving antenna (0.7 GHz to 40 GHz) for receiving active jamming signals radiated by the airborne self-defense electronic countermeasure system; The second power supply module 17 converts the 28V power supply connected to the power supply interface 18 into 12V and 5V voltages to supply power to the internal components of the signal receiver 2; The second battery 20 is used to supply power to the internal components of the signal receiver 2 .

[0010] Compared with the existing airborne self-defense electronic countermeasure system detection equipment, the present invention has the following significant advantages: 1. The present invention can meet the detection requirements of airborne self-defense electronic countermeasure systems at different maintenance and support levels of the troops through flexible combination. The crew level uses radar signal radiators to achieve "end-to-end" rapid testing and complete system-level functional inspections. The squadron level uses radar signal radiators, signal receivers, and handheld control terminals in combination to achieve radar warning functions and active interference functions and performance detection, fault location, etc., and complete static inspections and functional performance verification. The brigade level uses radar signal radiators, signal receivers, and handheld control terminals, combined with other equipment / resources, to collaboratively achieve dynamic testing and effectiveness verification of electronic countermeasure systems.

[0011] 2. The radar signal radiator uses both hardware and software methods to simulate multiple radar signals of different systems. The hardware method is to synthesize the power of the 2.4 GHz~18 GHz simulated radar signals generated by the five independent channels (channels 2-6) in the radar signal generation module and output a multi-target signal; the software method is to use a signal superposition algorithm to achieve a single RF channel to simulate multiple radar signals of different systems. The present invention can generate complex radar signals of multiple systems such as frequency agility, frequency jitter, pulse repetition interval jitter, pulse repetition interval slip, pulse repetition interval variation, pulse compression, pulse Doppler, intra-pulse frequency modulation, pulse phase modulation, etc.; using multi-channel synthesis and signal superposition algorithms to simulate multiple radar signals of different systems at the same time, it can test the ability of the warning system to sort and identify multiple targets of different systems at the same time.

[0012] 3. The present invention can generate and receive wide-band, multi-system radar signals, and realize integrated testing of radar warning and active jamming. The equipment adopts a miniaturized, handheld design, which is suitable for field testing of various types of airborne self-defense countermeasure systems, and realizes the integration, generalization, and lightweight of the support equipment, making it easy to carry and use.

[0013] 4. When using the universal detection equipment described in the present invention for detection, there is no need to disassemble the component components of the airborne electronic countermeasure system from the carrier aircraft. The in-situ function and performance detection of the airborne electronic countermeasure system (including passive components such as antennas and RF feeders) can be completed under field conditions. Compared with the on-board BIT, the test covers more comprehensive components and reflects the actual working status of the system.

[0014] 5. The present invention can obtain the information of the object under test online in the original position of the aircraft, improve the degree of automation and interaction in the performance test process, improve the efficiency of field testing, and reduce the requirements for professional operation of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the composition of the present invention; Figure 2 It is a schematic diagram of the composition of the radar signal radiator of the present invention; Figure 3 It is a schematic diagram of the signal receiver of the present invention; Figure 4 This is a schematic diagram of the superposition and output of two complex radar signals of the present invention. DETAILED DESCRIPTION

[0016] The specific implementation modes of the present invention are given below with reference to the accompanying drawings to further illustrate the present invention.

[0017] Example 1 A general detection device for field testing of an airborne self-defense countermeasure system in this embodiment, such as Figure 1As shown, it includes a radar signal radiator 1, a signal receiver 2, and a handheld control terminal 3, and adopts a broadband, reconfigurable integrated RF receiving and transmitting integrated design based on software radio technology, wherein: the radar signal radiator 1 is used to simulate and generate radar signals, realize the electromagnetic signals required for the radar warning function and active interference function and performance test of the airborne electronic countermeasure system, and can be used independently by hand; the signal receiver 2 is used to receive and measure the active interference signal radiated by the airborne electronic countermeasure system, and realize the test of the airborne active interference function and performance; the handheld control terminal 3 communicates with the radar signal radiator through the network port, and is used for editing and sending the parameters of the simulated radar radiation source signal, and communicates with the signal receiver through the network port, and is used for receiving and displaying the measurement data of the interference signal by the signal receiver; the handheld control terminal 3 can use a reinforced tablet computer, with embedded radar signal editing software, function detection software and performance detection software, to control the output signal characteristics of the radar signal radiator, display the interference signal parameter value and spectrum characteristics, and record and store all test data, fault results and operation processes.

[0018] The radar signal radiator 1 adopts a miniaturized, handheld design, which is convenient for single-soldier operation. Its main functions are: ① According to the characteristic parameter value of the radar signal sent by the handheld control terminal, it is internally modulated to transmit a wideband radar signal (0.7 GHz ~40GHz) with variable power, which is used to check the warning function of the airborne self-defense electronic countermeasure system; ② Simulate the generation of special system radar signals, such as frequency agility, frequency jitter, pulse repetition interval jitter, pulse repetition interval slip, pulse repetition interval variation, pulse compression, pulse Doppler, intra-pulse frequency modulation, pulse phase modulation, etc., to check the warning system's search and identification capabilities for radar signals of different systems; ③ Use multi-channel synthesis and signal superposition methods to simultaneously output multiple radar signals to detect the airborne self-defense electronic countermeasure system's ability to sort, identify and warn radar signals in a complex electromagnetic environment.

[0019] The hardware components of the radar signal radiator are as follows: Figure 2 As shown: The radar signal radiator 1 includes an intermediate frequency and control module 19, a radar signal generating module 4, a coaxial switch 5, a broadband antenna 6, a first battery 10, an indicator light 7, a first power module 8, and a first power interface 9; The intermediate frequency and control module 19, with ZYNQ as the core, is equipped with high-speed AD / DA, Gigabit network port and HDMI interface, realizing functions such as control, logic processing, signal transmission and reception, and display, and receiving radar signal characteristic parameters sent by the handheld control terminal 3 through the network port; The radar signal generating module 4 generates a radar signal of 0.7 GHz to 40 GHz according to the radar pulse description word sent by the intermediate frequency and control module; The coaxial switch 5 transfers the radar signal generated by the radar signal generating module 4 to the broadband antenna 6 according to three channels: 0.7 GHz to 1.4 GHz, 2 GHz to 18 GHz (5-channel synthesis), and 18 GHz to 40 GHz; A broadband antenna 6 radiates the simulated radar signal into space; Indicator light 7, used to indicate the working status of the radar signal radiator 1; The power module 8 converts the 28V power supply connected to the first power interface 9 into 12V and 5V voltages to supply power to the internal devices of the radar signal radiator 1; The first battery 10 supplies power to the internal devices of the radar signal radiator 1 when there is no external power supply.

[0020] The radar signal radiator 1 adopts a signal superposition algorithm to output multiple complex system signals at the same time. Compared with the timing allocation method that outputs multiple radar signals at the same time, the signal superposition method can avoid the disadvantage that the key radar signal is covered by other radar signals. The timing allocation method divides the multiple signals output at the same time into several priorities according to the importance and threat level of the radar signal simulation. The signal with the highest priority is completely retained, and the signal with a lower priority at the same time will be covered by the signal with a higher priority. The lower the priority, the higher the probability of being covered, and the smaller the number of pulses output. Finally, the pulse signals of multiple radars are fused into an orderly pulse sequence according to priority.

[0021] The signal superposition method is to add the amplitudes of the simulated multi-channel radar signals in a weighted manner and then output them. By adjusting the weighting coefficient, the amplitude of the synthesized pulse sequence can be controlled to prevent truncation, and the output signal is not distorted. At the same time, the operating frequency, pulse width, pulse repetition frequency, pulse modulation and other parameter values ​​of each simulated radar signal are not changed. The advantage of the signal superposition method is that it does not reduce the number of pulses output by each radar signal, that is, it will not affect the electronic reconnaissance equipment's measurement of the pulse width, pulse repetition frequency and pulse modulation parameters of the radar signal radiator outputting multiple signals at the same time.

[0022] The signal receiver 2 receives the active interference signal emitted by the airborne self-defense electronic countermeasure system and performs parameter measurement. Its main functions are as follows: ① During the active interference function detection, the signal receiver 2 receives the active interference signal emitted by the airborne self-defense electronic countermeasure system through the built-in antenna, performs mixing, detection, filtering, amplification, comparison and other processing, and outputs an intermediate frequency signal for detecting whether the active interference signal of the airborne self-defense electronic countermeasure system is radiated normally; ② During the active interference performance detection, the active interference signal emitted by the airborne self-defense electronic countermeasure system is received through the built-in antenna, and the mixing, filtering and amplification processing of the broadband received signal are completed, and an intermediate frequency signal is generated. After high-speed AD sampling, envelope detection and Fourier transform are performed in the FPGA to obtain the envelope parameters (pulse width, pulse repetition period) and spectrum parameters (frequency, power, bandwidth) of the radar signal, and upload them to the handheld control terminal 3 through the network port.

[0023] The hardware components of signal receiver 2 are as follows: Figure 3 As shown: The signal receiver 2 has a built-in intermediate frequency and control module 11, a radar signal generating module 12, a mixer 13, a filter 14, a variable gain amplifier 15, a receiving antenna 16, a second power supply module 17, and a second battery 20; The intermediate frequency and control module 11 receives the mixing local oscillator frequency from the network port, controls the radar signal generation module 12 to output the local oscillator signal of 8~18GHz; receives the current signal power from the network port, calculates the gain control code of the variable gain amplifier, and controls the variable gain amplifier to perform AGC automatic gain control; A radar signal generating module 12 generates a local oscillator signal of 8 GHz to 18 GHz; The mixer 13 performs mixing processing on the received radar signal and the local oscillator signal generated by the radar signal generating module 12; A filter 14 performs low-pass filtering on the mixed signal; The variable gain amplifier 15 performs power control on the filtered intermediate frequency signal and adjusts it to a certain fixed power; Receiving antenna 16, a wideband receiving antenna (0.7 GHz to 40 GHz), receiving active interference signals radiated by an airborne self-defense electronic countermeasure system; The second power module 17 converts the 28V power connected to the power interface 18 into 12V and 5V voltages to supply power to the internal components of the signal receiver 2; The second battery 20 is used to supply power to the internal components of the signal receiver 2 .

[0024] The handheld control terminal 3 is a reinforced tablet computer with embedded radar signal editing software, function detection software and performance detection software, which can realize the setting of characteristic parameters of radar signals of different systems, and send them to the radar signal radiator 1 through the network port to control the output signal characteristics of the radar signal radiator 1. After the parameter editing and downloading is completed, the network cable connecting the handheld control terminal 3 and the radar signal radiator 1 can be disconnected, and the radar signal radiator 1 can be used independently; the measurement data transmitted by the signal receiver 2 can be received through the network port, and the envelope parameter value and change type (pulse width, pulse repetition period) and spectrum parameters (frequency, power, bandwidth) of the interference signal can be displayed; the data of the airborne electronic countermeasure system can be received through the serial port, and the functions and performance of the airborne warning system, reconnaissance system, and active jamming system can be detected; all test data, fault results and operation processes can be recorded and stored.

[0025] The components of the general field detection equipment for airborne electronic countermeasure equipment, radar signal radiator 1, signal receiver 2, and handheld control terminal 3, are placed in a portable trolley case for easy transfer and transportation. During field detection, the trolley case can extend the support rod to set up the radar signal radiator and signal receiver to a certain height to meet the height conditions required for the test.

[0026] When testing the radar warning function, if the signal parameter values ​​pre-resident in the radar signal radiator 1 can meet the test requirements, the radar signal radiator 1 can be used independently to complete the test. If the output signal parameters of the radar signal radiator need to be edited, the handheld control terminal 3 needs to be connected to the radar signal radiator 1 with a network cable.

[0027] During the active interference function and performance test, the radar signal radiator 1, the signal receiver 2, and the handheld control terminal 3 are used together. At this time, the radar signal radiator 1 can supply power to the signal receiver 2 through the power line, and the two share a power supply, so that the volume and weight of the signal receiver 2 are reduced.

[0028] Beneficial effects: The universal detection equipment described in the present invention is composed of a radar signal radiator, a signal receiver and a handheld control terminal. Through the modular and flexible combination of the equipment, it can meet the detection needs of the airborne self-defense electronic countermeasure system at different maintenance and support levels of the troops, and effectively reduce the types and number of support equipment. The universal detection equipment can generate complex radar signals with wide frequency band, multi-channel and multi-system, and realize the detection of the sorting, identification and warning capabilities of different models of airborne self-defense electronic countermeasure systems for multi-system different targets arriving at the same time, as well as the active interference signal parameter test. The equipment adopts a miniaturized, lightweight and handheld design, which is easy to transfer and transport, and is suitable for field detection.

[0029] Example 2 The radar signal radiator 1 can generate frequency agility, frequency jitter, pulse repetition interval jitter, pulse repetition interval sliding, pulse repetition interval staggered, pulse compression, pulse Doppler, intra-pulse frequency modulation, pulse phase modulation and other multi-system complex radar signals, and adopts a signal superposition algorithm to simulate the generation of multiple radar signals at the same time. The following takes the superposition output of two complex system radar signals as an example to illustrate its implementation process. The first radar signal has a pulse repetition interval sliding, and the signal characteristics are that the operating frequency is fixed at 9246MHz, the pulse repetition interval is unidirectionally increased in steps of 30us between 218-308us, the pulse width is fixed at 3us, and there is no intra-pulse modulation; the second radar signal has a staggered pulse repetition interval, and the signal characteristics are that the operating frequency is fixed at 9510MHz, the pulse repetition interval is 364us, 337us, 324us, and 375us, the pulse width is fixed at 1us, and there is no intra-pulse modulation; after the two signals are synthesized, the operating frequency, pulse repetition frequency, pulse width, intra-pulse modulation and other parameter values ​​of each radar signal are not changed, and the weighting coefficient of the output amplitude of each signal is 0.5. The schematic diagram of the superimposed signal is as follows Figure 4 .

[0030] Beneficial effects: The signal superposition algorithm is used to weight the signals radiated by different radars and then add them up for output. The output signal is not distorted by adjusting the weighting coefficient, and the sum of the weighting coefficients is 1. This method is more suitable for electromagnetic signal environments with strict requirements on signal arrival time. Compared with the sorting algorithm that sorts according to the priority level of radar radiation signals, this algorithm can reduce the situation of missing pulses, especially for the situation where pulses that arrive at the same time and have low priority cannot be detected and identified.

[0031] Example 3 Crew-level radar warning function detection. In this application scenario, the handheld control terminal 3 is connected to the radar signal radiator 1 with a network cable; the radar signal radiator uses a portable trolley case as a support base and is set up around the aircraft under test. The transmitting antenna of the radar signal radiator is aligned with the receiving antenna of the airborne self-defense electronic countermeasure system.

[0032] Step 1: The operator operates the handheld control terminal in the cockpit of the aircraft. According to the characteristics of the aircraft's airborne self-defense electronic countermeasure system, the operator uses the radar signal editing software on the handheld control terminal to set the characteristic parameters and quantity of the radar signal to be simulated, and sends them to the radar signal radiator through the network cable, and controls the working state of the radar signal radiator to radiate outward; Step 2: The operator observes in the cockpit whether the airborne self-defense electronic countermeasure system can correctly identify and warn single or multiple radar signals; Step 3: Change the frequency band, type, parameter value, quantity, etc. of the simulated radiated radar signal on the handheld control terminal, and send it to the radar signal radiator again to perform radar warning function detection of the airborne self-defense electronic countermeasure system; Step 4: After the detection is completed, the handheld control terminal controls the radar signal radiator to stop radiating.

[0033] Beneficial effects: The operator in the cockpit uses a handheld terminal to change the frequency band, type, parameter value, quantity, etc. of the simulated radiation radar signal, and completes the in-situ detection of the airborne electronic countermeasure system's warning function for radar radiation signals with different characteristics and quantities (including passive components such as antennas and RF feeders), which also reduces the threat level of electromagnetic radiation to the operator.

[0034] Example 4 Squadron-level active jamming performance detection. In this application scenario, the handheld control terminal 3 is connected to the radar signal radiator 1 and the signal receiver 2 respectively with a network cable; the radar signal radiator 1 and the signal receiver 2 are set up around the aircraft, the transmitting antenna of the radar signal radiator 1 is aligned with the receiving antenna of the airborne self-defense electronic countermeasure system, and the receiving antenna of the signal receiver 2 is aligned with the transmitting antenna of the airborne self-defense electronic countermeasure system.

[0035] Step 1: The operator operates the handheld control terminal 3 in the cockpit of the aircraft, and uses the radar signal editing software on the handheld control terminal 3 to set the characteristic parameters and quantity of the radar signal to be simulated according to the characteristics of the airborne self-defense electronic countermeasure system of the aircraft under test, and sends them to the radar signal radiator 1 through the network cable, and controls the working state of the radar signal radiator 1 to radiate outward; Step 2: The airborne self-defense electronic countermeasure system generates a corresponding interference signal based on the characteristics of the detected radar signal and after comparing it with the loaded combat database. Signal receiver 2 receives the active interference signal emitted by the airborne self-defense countermeasure system, completes the mixing, filtering, and amplification of the broadband received signal, generates an intermediate frequency signal, and then measures the envelope parameters (pulse width, pulse repetition period) and spectrum parameters (frequency, power, bandwidth) of the intermediate frequency signal. The detection results are uploaded to the handheld control terminal via the network cable; Step 3: The handheld control terminal 3 determines whether the active jamming performance of the airborne self-defense electronic countermeasure system is correct according to the radar signal characteristics issued by it and the jamming pattern loaded in the combat database; Step 4: According to the detection needs, the type, parameter value, quantity, etc. of the simulated radiation radar signal are changed on the handheld control terminal 3, and after being sent to the radar signal radiator 1 again, the active interference performance test of the airborne self-defense electronic countermeasure system is performed; Step 5: After the detection is completed, the handheld control terminal 3 controls the radar signal radiator 1 to stop radiating.

[0036] Beneficial effects: The operator changes the frequency band, type, parameter value, quantity, etc. of the simulated radiation radar signal through the handheld terminal in the cockpit, and completes the interference function and performance detection of the airborne electronic countermeasure system on radar radiation signals with different characteristics and quantities in the original state. The signal receiver receives the active interference signal emitted by the airborne self-defense countermeasure system, completes the measurement of signal parameters, and displays the test results on the handheld control terminal, which improves the automation of the detection process, reduces the professional requirements for operators, and also reduces the threat level of electromagnetic radiation to operators.

[0037] Finally, it should be noted that the above implementation examples are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above implementation examples, those skilled in the art should understand that the present invention may be modified or replaced by equivalents. Any modifications or partial replacements that are consistent with the principles and features suggested by the present invention should be included in the scope of the claims of the present invention.

Claims

1. A universal detection device for field testing of airborne self-defense electronic countermeasure systems, characterized in that It includes a radar signal radiator, a signal receiver, and a handheld control terminal. The radar signal radiator, the signal receiver, and the handheld control terminal are used independently or in combination. When used in combination, the handheld control terminal communicates with the radar signal radiator through a network port to edit the output signal parameters of the radar signal radiator, communicates with the signal receiver through a network port to display the test results, and communicates with the object under test through a serial port to realize interactive control of the test process. The radar signal radiator is used to simulate and generate single or multiple multi-system complex radar signals, and realize the electromagnetic signals required for the radar warning function and active jamming function and performance test of the airborne electronic countermeasure system; The signal receiver is used to receive and measure the active jamming signal radiated by the airborne electronic countermeasure system, so as to test the function and performance of the airborne active jamming system; The handheld control terminal is used for editing the output signal parameters of the radar signal radiator, displaying the test results, and interactively controlling the test process.

2. A universal detection device for field testing of an airborne self-defense electronic countermeasure system according to claim 1, characterized in that The radar signal radiator includes an intermediate frequency and control module, a radar signal generating module, a coaxial switch, a broadband antenna, a first battery, an indicator light, a first power supply module, and a first power supply interface; The intermediate frequency and control module, with ZYNQ as the core, is equipped with high-speed AD / DA, Gigabit network port and HDMI interface, realizing functions such as control, logic processing, signal transmission and reception, and display, and receiving radar signal characteristic parameters sent by the handheld control terminal through the network port; The radar signal generating module generates a radar signal of 0.7 GHz to 40 GHz according to the radar pulse description word sent by the intermediate frequency and control module; The coaxial switch transfers the radar signal generated by the radar signal generating module to the broadband antenna according to three channels of 0.7 GHz to 1.4 GHz, 2 GHz to 18 GHz, and 18 GHz to 40 GHz respectively; The broadband antenna radiates the simulated radar signal into space; The indicator light is used to indicate the working status of the radar signal radiator; The power module converts the 28V power supply connected to the first power interface into 12V and 5V voltages to supply power to the internal devices of the radar signal radiator; The first battery supplies power to the internal devices of the radar signal radiator when there is no external power supply.

3. A universal detection device for field testing of an airborne self-defense electronic countermeasure system according to claim 1, characterized in that The signal receiver includes an intermediate frequency and control module, a radar signal generating module, a mixer, a filter, a variable gain amplifier, a receiving antenna, a second power supply module, and a second battery; The intermediate frequency and control module receives the mixing local oscillator frequency from the network port, controls the radar signal generation module to output a local oscillator signal of 8-18 GHz; receives the current signal power from the network port, calculates the gain control code of the variable gain amplifier, and controls the variable gain amplifier to perform AGC automatic gain control; The radar signal generating module generates a local oscillator signal of 8 GHz to 18 GHz; The mixer performs mixing processing on the received radar signal and the local oscillator signal generated by the radar signal generating module; The filter performs low-pass filtering on the mixed signal; The variable gain amplifier performs power control on the filtered intermediate frequency signal to adjust it to near a fixed power; The receiving antenna is a broadband receiving antenna of 0.7 GHz to 40 GHz, which receives active interference signals radiated by the airborne self-defense electronic countermeasure system; The second power module converts the 28V power supply connected to the power interface into 12V and 5V voltages to power the internal components of the signal receiver; The second battery is used to supply power to internal components of the signal receiver.

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