A coupled and uncoupled integrated radar decoy system

Abstract

The present invention discloses a coupled and uncoupled integrated radar decoy system, which is composed of a decoy manager and a plurality of decoy devices. The decoy manager is a management and control device, which is controlled by professionals and is responsible for information interaction with a superior command post, a radar and decoy devices. It is connected to each decoy device by wired or wireless means to manage and control the decoy devices. The decoy system works in a coupled mode or an uncoupled mode. The decoy manager accurately controls the signal generation of each decoy device according to the work instructions issued by the superior command post and the state of the protected radar. These signals cover the protected radar signal in the time domain, are close to the protected radar signal in the frequency domain, and make it impossible for anti-radiation weapons to distinguish between the protected radar and the decoy device in the airspace. Each decoy device works in a coordinated manner under the control of the decoy manager to complete the combat mission of the decoy system.

Description

Technical Field

[0001] The invention belongs to the technical field of radar decoy systems, and in particular relates to a coupled and uncoupled organically integrated radar decoy system. Background Art

[0002] In modern warfare, radar is responsible for a variety of tasks such as early warning detection, long-range search, target tracking, and fire control guidance. It acts as the "eyes" and "ears" of the combat system, and its performance directly affects the combat effectiveness of the entire equipment system. During combat operations, paralyzing the enemy's radar system in advance can effectively attack the enemy's combat vision and command and control capabilities, and quickly gain the initiative and battlefield initiative. At the same time, the radar equipment system faces the threat of enemy anti-radiation weapons. One of the ways to deal with the enemy's anti-radiation strikes is to configure radar decoys. The main combat target of the radar decoy system is the enemy's anti-radiation weapons, including anti-radiation missiles and anti-radiation drones. The combat purpose is to protect one's own radar system.

[0003] Radar decoy systems can be divided into two categories, general-purpose and special-purpose, according to the signal transmission relationship between them and the radar. For example, invention patent applications CN111537963A, invention patent CN112859015B, and invention patent application CN114280556A all receive the radar's RF signal through an antenna, and are general-purpose radar decoy systems. This type of general-purpose radar decoy system can achieve full waveform coverage for radar signals with a non-agile pulse repetition period and carrier frequency, but cannot achieve rapid response for radar signals with an agile pulse repetition period or carrier frequency.

[0004] At present, most of my country's new radar equipment has reserved decoy coupling interfaces and is equipped with special decoys when it leaves the factory, but these special decoys have some shortcomings:

[0005] 1. Limited deployment scenarios: It needs to be wired coupled with the protected radar system, but the actual environment of the radar position may not have a suitable location for the deployment of dedicated decoys;

[0006] 2. Cannot be deployed quickly: Generally, it is only suitable for long-term fixed position defense. It cannot be deployed quickly and put into use in time for high-value radars with strong mobility, so it cannot provide good anti-radiation protection.

[0007] 3. Special aircraft for special use: Special decoys must be used in conjunction with radar models and cannot be adapted to other radar models. They cannot be equipped to troops in large quantities, and have low production efficiency and high production costs.

[0008] 4. Cannot protect multiple radars at the same time: Since special decoys are designed specifically for a certain radar, a set of decoy equipment cannot be compatible with multiple radars. In actual applications, there are multiple radars that need to be protected on a small position. Among them, the newly entered radar may be equipped with a decoy interface that can be coupled, while the original radar does not. Special decoys cannot provide protection for the original radar, nor can they provide protection for multiple radars at the same time. Summary of the invention

[0009] In view of the above technical problems, the present invention proposes a coupled and uncoupled organically integrated radar decoy system. Through the coupled and uncoupled integrated design, the advantages of the coupled special decoy system and the uncoupled general decoy system are combined, while avoiding the disadvantages of both. It can work in coupling with the radar as a special decoy for a certain type of radar to provide effective protection for the radar system, and can also work in the uncoupled mode to cooperate with the radar system that is not equipped with a special decoy to provide an effective protection means for it.

[0010] A coupled and uncoupled integrated radar decoy system, consisting of a decoy manager and a number of decoy devices. The decoy manager is a management and control device, which is operated by professionals and is responsible for information exchange with the superior command post, radar and decoy devices. It is connected to each decoy device by wire or wireless means to manage and control it.

[0011] The decoy system works in a coupled mode or an uncoupled mode, wherein the coupled mode means that the radar sends its own signal to the decoy manager via a wired / wireless method, and the uncoupled mode means that the decoy manager receives the signal transmitted by the radar via an antenna;

[0012] The decoy manager accurately controls the signal generation of each decoy device according to the work instructions issued by the superior command post and the status of the protected radar. These signals cover the protected radar signal in the time domain, approach the protected radar signal in the frequency domain, and make it impossible for anti-radiation weapons to distinguish between the protected radar and the decoy device in the airspace. Each decoy device works in a coordinated manner under the control of the decoy manager to complete the combat mission of the decoy system.

[0013] Further, the decoy manager includes an antenna unit, a receiver unit, a processing control unit, a database unit, and a display and control unit;

[0014] The antenna unit receives a signal transmitted by a radar in a non-coupling mode;

[0015] The receiver unit analyzes the signal received by the antenna unit, forms a pulse description word and sends it to the processing control unit, or receives and pre-processes the radar's own signal and sends it to the processing control unit;

[0016] The processing and control unit receives work instructions issued by the superior command post, and manages and controls each decoy device in combination with the signal parameter information of the radar received from the receiver unit, and stores and manages the data through the database unit, and displays and controls the data through the display and control unit.

[0017] Furthermore, the antenna unit is a horn antenna, which is fixed on a tripod during operation, and the antenna direction is aligned with the direction of the protected radar.

[0018] Further, the processing control unit includes an instruction receiving module, a radar working information receiving module, a radar signal parameter receiving module, a radar signal parameter measuring module, and a decoy device management and control module;

[0019] The command receiving module is used to receive the work instructions issued by the superior command post, including the combat operation mode, the protection radar list, the coupling mode with each radar, and the power on / off time; the operator deploys the decoy device according to the combat operation mode, sets the communication mode between the radar and the decoy manager according to the radar coupling mode, and obtains the basic information of the protection radar according to the received protection radar list information;

[0020] The radar working information receiving module is used to receive basic information of the protected radar sent by the superior command post, including power on / off information, working mode information, working mode information, and working parameter information;

[0021] The radar signal parameter receiving module is used to obtain the signal parameter information of the radar according to the pre-processing information sent by the data acquisition unit under the coupling model;

[0022] The radar signal parameter measurement module is used to measure the radar signal parameter information according to the pulse description word under the non-coupling model, and the radar signal parameter information includes pulse emission time, intra-pulse frequency and change parameters, and intra-pulse modulation type;

[0023] The bait device management and control module is used to manage and control each bait device individually according to the information / parameters received / acquired by other modules, so that it generates a corresponding bait signal.

[0024] Furthermore, the processing control unit of the bait manager uses a Mysql database to store and manage received instructions, work information, signal parameters, and bait device operation information, and generates corresponding logs to facilitate data recording, interaction, and management in the system.

[0025] Furthermore, the display control unit is composed of hardware and software systems, the hardware is a computer and a display, and the computer is controlled by professionals and is called a control host;

[0026] The software system includes radar basic data management module, bait basic data management module, radar parameter display management module, radar information display management module, planning management module, plan management module, planning execution module, bait pulse string editing module, bait status parameter display module, bait working process playback module and log module.

[0027] Furthermore, the decoy device is mainly composed of a decoy function unit, a control extension, a transmission extension and a power distribution unit, and the decoy function unit includes a signal generation module, a wave control machine, a T component, a power division network, and an array antenna;

[0028] The control extension is mainly composed of a control computer and a network transceiver module. After the bait device is powered on, the control computer starts and automatically runs the control computer software. The software initializes the computer serial port and digital IO card, then enters the working state, waits for the instructions sent by the bait manager, and completes the corresponding operations according to the instructions;

[0029] The signal generation module is used to generate the required intermediate frequency signal through encoding, modulation, and digital-to-analog conversion, and then modulate it to the corresponding channel through the up-conversion channel for transmission;

[0030] The array antenna, the power division network, and the T component together form an antenna array to realize two-dimensional electronic scanning of the beam; the beam control machine sends a beam control code to the T component under the control of the control extension, and the T component controls the phase shifter and attenuator in the T component according to the beam control code to perform phase shift and amplitude control on the radio frequency signal to form the transmission beam required by the array antenna;

[0031] The transmitting extension is used to complete the transmission of the signal, and adopts a full amplifier chain. The signal is first amplified by a pre-amplifier to a level that can drive the final power amplifier, and the final stage adopts a four-level synthesis method.

[0032] Furthermore, the array antenna is a phased array antenna, which can control the azimuth of each waveform, and a low sidelobe design is performed in the direction of the bait manager when the waveform is designed.

[0033] Furthermore, the decoy manager is pre-bound with the working parameters and working status of the protected radar;

[0034] In the non-coupling mode, the decoy manager receives the work order issued by the superior command post, and distinguishes the operation according to whether the protected radar is turned on or not; if the radar is not turned on, the bound working parameters and working status are read, and the decoy signal parameters and timing are generated accordingly; if the radar is in the turned-on working state, the radar radiation signal is received and the decoy signal parameters and timing are corrected; the decoy manager sends the decoy signal parameters and timing to the decoy device, and waits for the decoy device to generate a signal, amplify the signal, radiate the signal, and determine that the signal transmission is completed;

[0035] In the coupling mode, the decoy manager receives the work instructions and radar work information issued by the superior command post, directly receives the work parameters and work timing sent by the coupled radar, generates decoy signal parameters and timing and sends them to the decoy device, and waits for the decoy device to generate signals, amplify signals, radiate signals, and determine that the signal transmission is completed;

[0036] The bait manager continues to receive work instructions issued by the superior command post until the work is completed.

[0037] The present invention can provide protection for a single radar, multiple radars deployed in the same area, and can also provide rapid deployment and effective protection for mobile high-value radars. It not only solves the problem that the dedicated radar decoy system is not versatile and cannot solve the problem of protecting multiple radars at the same time, but also solves the problem that the universal radar decoy system has low protection efficiency for a single radar.

[0038] Under the centralized management and unified dispatch of the decoy manager, the present invention reasonably deploys multiple decoy devices to enable them to work together and collaborate efficiently, so as to build a cluster protection network for multiple radars deployed in the same area; the decoy devices are designed to be low-power and miniaturized, and the entire system can be mobile on a vehicle, so that the system has good mobility and can be deployed quickly. It can be mobile at high speed with the vehicle-mounted radar system and can be quickly deployed after arriving at the combat position, and can be started before the protected radar, so as to provide timely and effective protection for it. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the composition of the radar decoy system disclosed in Example 1;

[0040] Figure 2 This is a schematic diagram of the radar decoy system composition and working mode;

[0041] Figure 3 It is a schematic diagram of the components of the bait manager and bait equipment;

[0042] Figure 4 It is a partial functional block diagram of the receiver unit;

[0043] Figure 5It is a schematic diagram of the functional modules of the display and control unit of the bait manager;

[0044] Figure 6 This is the main structure diagram of the bait device;

[0045] Figure 7 This is a schematic diagram of the structure of the control extension of the bait device. DETAILED DESCRIPTION

[0046] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0047] A coupled and uncoupled integrated radar decoy system is composed of a decoy manager and a plurality of decoy devices. For ease of description, this embodiment is described by taking three decoy devices as an example. Figure 1 shown.

[0048] The entire radar decoy system is equipped with a decoy manager, which is a management and control device operated by professionals. It is responsible for information exchange with the superior command post, radar and decoy equipment, and connects to each decoy equipment through wired or wireless means to manage and control it. The decoy manager can communicate with the superior command post through a wireless network, and communicate with the decoy equipment through wired or wireless means.

[0049] The decoy system operates in coupled mode or uncoupled mode, refer to Figure 2 , where the coupled mode means that the radar sends its own signal to the bait manager via wired / wireless means, and the uncoupled mode means that the bait manager receives the signal transmitted by the radar through the antenna.

[0050] The decoy system that is not coupled with the radar is universal and does not require on-site debugging. It can be quickly put into use. It can also achieve full waveform coverage for radar signals with a constant pulse repetition period and carrier frequency, but it cannot achieve a fast response and full waveform coverage for radar signals with a fast pulse repetition period or carrier frequency. One of the existing processing methods is to use high-density clutter pulses to disrupt the enemy's detection and aiming for protection, but the protection effect is undoubtedly inferior.

[0051] The decoy system coupled with the radar can achieve full waveform coverage even with agile changes in pulse repetition period or carrier frequency, because the radar transmits the signal to be emitted to the decoy system in real time. However, the coupled decoy system requires on-site debugging, and it is difficult to put the decoy system into use quickly for highly mobile radars.

[0052] The present invention adopts a coupled and uncoupled integrated design, combines the respective advantages of a coupled special decoy system and an uncoupled general decoy system, and avoids the disadvantages of both. It can work in coupling with the radar as a special decoy for a certain type of radar to provide effective protection for the radar system, and can also work in a non-coupled mode to cooperate with a radar system that is not equipped with a special decoy to provide an effective protection means for it.

[0053] During the debugging process between the decoy system and its protection radar, the radar can be protected based on the uncoupled mode under the control of the decoy manager, which solves the lag problem of protection in the coupled mode.

[0054] The working parameters and working status of the protected radar can be pre-bound inside the decoy manager. Before the radar is turned on and during the startup phase, when the decoy manager has not yet received its radio frequency signal through the antenna, it can obtain its working parameters and working status in advance, and control the decoy device to generate decoy signals in advance to achieve early protection.

[0055] During the operation, the decoy manager accurately controls the signal generation of each decoy device according to the work instructions issued by the superior command post and the status of the protected radar. These signals cover the protected radar signal in the time domain, approach the protected radar signal in the frequency domain, and make it impossible for anti-radiation weapons to distinguish between the protected radar and the decoy device in the airspace; each decoy device coordinates work under the control of the decoy manager to complete the combat mission of the decoy system. The coordination work here refers to different decoy devices providing protection for different radars in a timely manner, and also refers to the same decoy device adjusting its own working mode in a timely manner to achieve the optimal protection of the decoy system.

[0056] Existing decoy devices are all single universal or single coupling types, and cannot be controlled and adjusted in time. The present invention can coordinate the work of various decoy devices through the setting of the decoy manager, and can also achieve real-time adjustment of the working mode of the decoy device, providing more comprehensive protection for battlefield radar.

[0057] 1. Bait Manager

[0058] The core content of the present invention is to set up a bait manager in the bait system for information exchange with the superior command post, and to control each bait device through the bait manager. The main structure and functions of the bait manager are introduced in detail below.

[0059] The decoy manager includes an antenna unit, a receiver unit, a processing control unit, a database unit, and a display control unit. Figure 3 .

[0060] 1. Antenna unit

[0061] The antenna unit receives the signal transmitted by the radar in the non-coupling mode; preferably, the antenna unit is a horn antenna, which is fixed on a tripod when working, and the antenna direction is aligned with the direction of the protected radar.

[0062] 2. Receiver unit

[0063] The receiver unit analyzes the signal received by the antenna unit, forms a pulse description word and sends it to the processing control unit, or receives and pre-processes the own signal sent by the radar, and sends it to the processing control unit.

[0064] For the RF signal received by the antenna unit, the receiver unit mixes it to an intermediate frequency, samples the intermediate frequency signal through a high-speed ADC, and sends the sampled output to the FPGA hardware platform to implement broadband digital channelization, complete the intermediate frequency signal channelization, and implement digital orthogonal down-conversion to obtain orthogonal baseband signals (I / Q components), extract signal pulses, and determine the sub-channel where the input signal is located; measure pulse signal parameters, including pulse width, arrival time, pulse front carrier frequency, and channel phase difference as pulse description words, and send the pulse description words to the processing control unit for subsequent processing. The functional block diagram of this part of the receiver unit is as follows: Figure 4 shown.

[0065] 3. Processing control unit

[0066] The processing and control unit receives work instructions issued by the superior command post, and manages and controls each decoy device in combination with the signal parameter information of the radar received from the receiver unit, and stores and manages the data through the database unit, and displays and controls the data through the display and control unit.

[0067] The processing control unit includes an instruction receiving module, a radar working information receiving module, a radar signal parameter receiving module, a radar signal parameter measuring module, and a bait device management and control module.

[0068] (1) The instruction receiving module is used to receive work instructions issued by the superior command post, including combat application mode, protection radar list, coupling mode with each radar, and power on and off time; the operator deploys the bait equipment according to the combat application mode, sets the communication mode between the radar and the bait manager according to the radar coupling mode, and obtains the basic information of the protection radar according to the received protection radar list information.

[0069] (2) The radar working information receiving module is used to receive the basic information of the protected radar sent by the superior command post, including power on and off information, working mode, working mode information, and working parameter information.

[0070] ⑶ The radar signal parameter receiving module is used to obtain the radar signal parameter information according to the preprocessing information sent by the data acquisition unit under the coupling model.

[0071] (4) The radar signal parameter measurement module is used to measure the radar signal parameter information according to the pulse description word under the non-coupled model. The radar signal parameter information includes pulse emission time, intra-pulse frequency and change parameters, and intra-pulse modulation type, wherein the intra-pulse modulation type includes fixed, linear frequency modulation, multi-carrier, multi-carrier plus phase coding, nonlinear modulation, etc.

[0072] ⑸ The bait device management and control module is used to manage and control each bait device individually according to the information / parameters received / acquired by other modules, so that it generates corresponding bait signals.

[0073] Since the decoy manager processing control unit needs to simultaneously receive data from the superior command post, data from multiple radars, and control multiple decoy devices, the received instructions, work information, signal parameters, and decoy device operation information are stored and managed using a Mysql database, and easy-to-view logs are generated to facilitate data recording, interaction, and management in the system, providing a strong guarantee for the reliable operation of the system.

[0074] ⑹Display and control unit

[0075] The display and control unit is composed of hardware and software systems. The hardware is a computer and a display. The computer is controlled by professionals and is called a control host.

[0076] The software system includes radar basic data management module, decoy basic data management module, radar parameter display management module, radar information display management module, planning management module, plan management module, planning execution module, decoy pulse string editing module, decoy state parameter display module, decoy working process playback module, log module, etc. Figure 5 shown.

[0077] ① Radar basic data management module

[0078] Radar basic data management is mainly used to display and manage the basic data of the protected radar, including radar number, radar type, longitude, latitude, IP address, port, radar working status, working frequency, transmission power, antenna beam width, antenna beam scanning mode, receiver sensitivity, pulse repetition frequency, pulse width, pulse transmission time, pulse reception time, arrival angle, signal-to-noise ratio, carrier frequency, etc. The interface can also provide dynamic radar addition, radar deletion, radar information editing and saving functions.

[0079] ②Bait basic data management module

[0080] The basic data management of bait is mainly used to display and manage the basic information of bait devices, including the bait device number, IP address, port, device status, device working hours, device maintenance personnel, etc. The interface also allows the addition, deletion, editing, and saving of bait device information.

[0081] ③ Radar parameter display management module

[0082] Radar parameter display management is responsible for displaying and managing the protected radar signal parameters received by the decoy manager. The displayed and managed data mainly include radar number, radar type, longitude, latitude, radar working status, pulse repetition frequency, pulse width, pulse transmission time, pulse reception time, arrival angle, signal-to-noise ratio, and carrier frequency.

[0083] ④ Radar information display management module

[0084] Radar information display management is responsible for displaying and managing the protected radar signal parameters received by the decoy manager. The displayed and managed data mainly include radar number, radar type, longitude, latitude, radar operating status, operating frequency, transmit power, antenna beam width, antenna beam scanning mode, receiver sensitivity, and pulse repetition frequency.

[0085] ⑤ Plan management module

[0086] Plan management is used to design plans, and to display and manage completed plans. In the plan management interface, you can set the task name and plan name, and select the number of bait devices required in the plan. Once the number is determined, the corresponding number of device parameter setting boxes will be displayed in the selected device table. In the device parameter setting box, you can select the bait device, set the longitude and latitude of the bait device, and the working parameters of the bait device. After completing all settings, click Save Plan to complete the design of a plan.

[0087] The plan table can display the information of completed plans, and the information can be edited, deleted or saved. In the deployment interface of the plan design, when you right-click the radar or decoy image, the radar or decoy parameter editing interface will pop up, and the parameters of the radar or decoy can be set dynamically, and the deployment of the radar or decoy can be adjusted. The editable configuration information includes the device name, device number, device longitude, device dimension, etc.

[0088] ⑥Planning management module

[0089] Planning management can be carried out according to the generated plan. After the plan is selected, the bait devices included in the plan design will be displayed on the interface. Set the start time, end time, working mode and working parameters of the bait device in each bait device information box. After the settings are completed, click the OK button to complete the planning.

[0090] ⑦Planning execution module

[0091] Plan Execution You can select a plan from the prepared plans and click the Execute button to execute the plan.

[0092] ⑧ Decoy pulse train editing module

[0093] Decoy pulse string editing is mainly used to configure and modify the pulse string data of each decoy device when building a complex electromagnetic environment. The system configures and displays the pulse string parameters according to the pulse parameters and protection rules of the protected radar, and the operator can modify them as needed. The pulse string parameters include fixed, linear frequency modulation, multi-carrier, multi-carrier plus phase coding, and nonlinear modulation.

[0094] ⑨Bait status parameter display module

[0095] The bait status parameter display can monitor and display the switch status, link status and link transmission data rate of each bait device in real time.

[0096] ⑩Playback module

[0097] The playback module is used to complete the replay of previously completed decoy device combat information.

[0098] ⑪Log module

[0099] The log module provides better protection for the maintainability of the system. Since there are a large number of terminals in the bait system and the data interaction with the server is frequent, the data recorded in the log file is relatively large, which is relatively inconvenient to view. In addition, the data server has different requirements for log records in each stage from design, debugging to use. For example, during debugging, it is necessary to know every information in the server operation process, from client connection status to data reading and writing status, which needs to be recorded in the log file. However, when the server is debugged and there are relatively few bugs, the only concern is important information such as server operation errors. At this time, those less important log information will affect the search speed and waste the developer's energy. In addition, writing data to the log file also requires a certain amount of CPU resources, and those redundant log information will cause a considerable waste of system resources. In view of the above situation, the system divides the log information into multiple levels for classification and recording.

[0100] 2. Bait Equipment

[0101] Radars can be divided into fixed radars and mobile radars according to whether they are fixed points or not. Fixed radar is a radar system installed at a fixed location, usually used to monitor a specific area or target for a long time; mobile radar is a mobile radar system that can be quickly deployed at different locations for temporary or specific mission monitoring.

[0102] For mobile radars, since the enemy does not know the radar location in advance, it is difficult to use composite guidance and fixed-point strike methods such as terrain matching. The power of mobile radars is usually not very high, so the power requirement for decoy equipment is not large, and it does not need to be much higher than the radar side lobe, but it must be small, maneuverable, and easy to deploy.

[0103] The present invention is also mainly aimed at the protection of mobile radars, so the decoy equipment is also designed with low power, which can be equivalent to or slightly higher than the side lobe power of the mobile radar. Due to the low power, the phased array antenna of the system can be miniaturized, making the entire system relatively light. The entire system (including the decoy manager, decoy equipment, power supply facilities, etc.) can be installed on a motor vehicle, which is convenient and flexible to deploy.

[0104] Since the power of the bait device is relatively small, coordination between multiple bait devices is particularly important. The present invention adopts an intelligent optimization method to automatically generate the layout plan and power intensity setting of each bait device according to the possible attack direction to achieve the purpose of optimal protection.

[0105] The decoy device is mainly composed of a decoy function unit, a control extension, a transmitting extension and a power distribution unit. The decoy function unit includes a signal generating module, a wave control machine, a T component, a power division network, and an array antenna. Figure 6 This is the main principle block diagram of the bait device.

[0106] 1. Control extension

[0107] The control extension is mainly composed of a control computer and a network transceiver module. Figure 7 After the bait device is powered on, the control computer starts and automatically runs the control computer software. The software initializes the computer serial port and digital IO card, then enters the working state, waits for the instructions sent by the bait manager, and completes the corresponding operations according to the instructions.

[0108] 2. Signal generation module

[0109] The signal generation module is used to generate the required intermediate frequency signal through coding, modulation, and digital-to-analog conversion, and then modulate it to the corresponding channel through the up-conversion channel for transmission.

[0110] The main function of the signal generation module is to generate radio frequency signals. A broadband digital signal processing board can be used as the broadband digital signal processing unit of the device. The broadband digital signal processing board is designed with an ultra-wideband DAC transmission channel. The transmission channel is designed as a multi-channel broadband transmission channel, which can simulate and generate various modulation signals. Digital reproduction encoding is required for digital signal transmission. The encoded data is sent to the digital modulation module, and the corresponding modulation mode is modulated according to the configuration of the operating terminal. The modulated digital signal is converted into an intermediate frequency signal through analog-to-digital conversion. The intermediate frequency signal is modulated to the corresponding channel for transmission through the up-conversion channel.

[0111] 3. Array antenna, power division network, T-module, wave control machine

[0112] The array antenna, the power division network and the T-component together form an antenna array. The antenna array can realize the following functions: (1) signal radiation: radiate electromagnetic wave signals to a specified space; (2) signal amplification function: amplify the input excitation signal to meet the requirements of the equivalent radiation power of each bait device; (3) beam control function: have the function of antenna pitch electronic beam scanning.

[0113] The excitation signal input by the signal generating module is amplified by the T component. The beam control machine sends a beam control code to the T component under the control of the control extension. The T component controls the phase shifter and attenuator in the T component according to the beam control code to perform phase shift and amplitude control on the RF signal to form the transmitting beam required by the array antenna.

[0114] For the radar decoy system of the present invention, it is possible to protect both coupled radar and uncoupled radar at the same time, and there is a situation where the decoy signal is emitted while the protected radar signal is received, so that when the radar signal changes mode, the decoy signal changes accordingly. The emitted decoy signal may interfere with the reception of the protected radar signal. To this end, the array antenna is a phased array antenna that can azimuthally control each pulse, and the antenna beam is designed to be in the low side lobe in the direction of the decoy manager.

[0115] 4. Transmitter extension

[0116] The transmitting extension is used to complete the transmission of the signal, and adopts a full amplifier chain. The signal is first amplified by a pre-amplifier to a level that can drive the final power amplifier, and the final stage adopts a four-level synthesis method.

[0117] The working mode of the radar decoy system disclosed in the present invention is described below.

[0118] 1. The decoy manager is pre-packaged with the working parameters and working status of the protected radar. Before the radar is turned on and during the startup phase, when the decoy manager has not yet received its radio frequency signal through the antenna, it obtains its working parameters and working status in advance, and controls the decoy device to generate decoy signals in advance, so as to achieve the purpose of rapid guidance and early protection.

[0119] 2. In the non-coupling mode, the decoy manager receives the work order issued by the superior command post, and distinguishes the operation according to whether the protected radar is turned on or not; if the radar is not turned on, the bound working parameters and working status are read, and the decoy signal parameters and timing are generated accordingly; if the radar is in the turned-on working state, the radar radiation signal is received and the decoy signal parameters and timing are corrected; the decoy manager sends the decoy signal parameters and timing to the decoy device, and waits for the decoy device to generate a signal, amplify the signal, radiate the signal, and determine that the signal transmission is completed.

[0120] 3. In the coupling mode, the decoy manager accepts the work instructions and radar working information issued by the superior command post, directly receives the working parameters and working timing sent by the coupled radar, generates decoy signal parameters and timing and sends them to the decoy device, and waits for the decoy device to generate signals, amplify signals, radiate signals, and determine that the signal transmission is completed.

[0121] 4. The bait manager continues to receive work instructions from the superior command post until the work is completed.

[0122] The above coupling mode and non-coupling mode can be switched according to the work instructions of the superior command post. Before the coupling mode is debugged, the non-coupling mode can be used to protect the radar to solve the lag problem of protection in the coupling mode.

[0123] In order to meet the system's need to protect multiple radars, the decoy manager must consider the protection of both coupled and uncoupled radars in a decoy system that integrates coupled and uncoupled types. Since it is unlikely that two radars with very small frequency differences will appear in the same small area, waveform conflicts generally do not occur. However, if there is a conflict in power allocation, the protection needs of the coupled radar must be met first.

[0124] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention.

Claims

1. A coupled and uncoupled integrated radar decoy system, characterized in that: It consists of a decoy manager and several decoy devices. The decoy manager is a management and control device operated by professionals, responsible for information exchange with the superior command post, radar and decoy devices, and connected to each decoy device through wired or wireless means to manage and control them. The decoy system works in a coupled mode or an uncoupled mode, wherein the coupled mode means that the radar sends its own signal to the decoy manager via a wired / wireless method, and the uncoupled mode means that the decoy manager receives the signal transmitted by the radar via an antenna; The decoy manager accurately controls the signal generation of each decoy device according to the work instructions issued by the superior command post and the status of the protected radar. These signals cover the protected radar signal in the time domain, approach the protected radar signal in the frequency domain, and make it impossible for anti-radiation weapons to distinguish between the protected radar and the decoy device in the airspace. Each decoy device coordinates its work under the control of the decoy manager to complete the combat mission of the decoy system. The decoy manager is pre-bound with the working parameters and working status of the protected radar; In the non-coupling mode, the decoy manager receives the work instructions and radar work information issued by the superior command post, and distinguishes operations according to whether the protected radar is turned on or not; If the radar is not turned on, the bound working parameters and working status are read, and the decoy signal parameters and timing are generated accordingly; If the radar is in the on-state, it receives the radar radiation signal and corrects the decoy signal parameters and timing; The decoy manager sends the decoy signal parameters and timing to the decoy device, and waits for the decoy device to generate, amplify, and radiate the signal, and confirms that the signal transmission is completed; In the coupling mode, the decoy manager receives the work instructions issued by the superior command post, directly receives the working parameters and working sequence sent by the coupling radar, generates decoy signal parameters and timing and sends them to the decoy device, and waits for the decoy device to generate signals, amplify signals, radiate signals, and determine that the signal transmission is completed; The bait manager continues to receive work instructions issued by the superior command post until the work is completed.

2. The coupled and uncoupled integrated radar decoy system according to claim 1, characterized in that: The decoy manager includes an antenna unit, a receiver unit, a processing control unit, a database unit, and a display and control unit; The antenna unit receives a signal transmitted by a radar in a non-coupling mode; The receiver unit analyzes the signal received by the antenna unit, forms a pulse description word and sends it to the processing control unit, or receives and pre-processes the radar's own signal and sends it to the processing control unit; The processing and control unit receives work instructions issued by the superior command post, and manages and controls each decoy device in combination with the signal parameter information of the radar received from the receiver unit, and stores and manages the data through the database unit, and displays and controls the data through the display and control unit.

3. The coupled and uncoupled integrated radar decoy system according to claim 2 is characterized in that: The processing control unit includes an instruction receiving module, a radar working information receiving module, a radar signal parameter receiving module, a radar signal parameter measuring module, and a bait device management and control module; The command receiving module is used to receive the work instructions issued by the superior command post, including the combat operation mode, the protection radar list, the coupling mode with each radar, and the power on / off time; the operator deploys the decoy device according to the combat operation mode, sets the communication mode between the radar and the decoy manager according to the radar coupling mode, and obtains the basic information of the protection radar according to the received protection radar list information; The radar working information receiving module is used to receive basic information of the protected radar sent by the superior command post, including power on / off information, working mode information, working mode information, and working parameter information; The radar signal parameter receiving module is used to obtain the signal parameter information of the radar according to the pre-processing information sent by the data acquisition unit under the coupling model; The radar signal parameter measurement module is used to measure the radar signal parameter information according to the pulse description word under the non-coupling model, and the radar signal parameter information includes pulse emission time, intra-pulse frequency and change parameters, and intra-pulse modulation type; The bait device management and control module is used to manage and control each bait device individually according to the information / parameters received / acquired by other modules, so that it generates a corresponding bait signal.

4. The coupled and uncoupled integrated radar decoy system according to claim 1, characterized in that: The decoy device is mainly composed of a decoy function unit, a control extension, a transmitting extension and a power distribution unit. The decoy function unit includes a signal generating module, a wave control machine, a T component, a power division network and an array antenna; The control extension is mainly composed of a control computer and a network transceiver module. After the bait device is powered on, the control computer starts and automatically runs the control computer software. The software initializes the computer serial port and digital IO card, then enters the working state, waits for the instructions sent by the bait manager, and completes the corresponding operations according to the instructions; The signal generation module is used to generate the required intermediate frequency signal through encoding, modulation, and digital-to-analog conversion, and then modulate it to the corresponding channel through the up-conversion channel for transmission; The array antenna, the power division network, and the T component together form an antenna array to realize two-dimensional electronic scanning of the beam; the beam control machine sends a beam control code to the T component under the control of the control extension, and the T component controls the phase shifter and attenuator in the T component according to the beam control code to perform phase shift and amplitude control on the radio frequency signal to form the transmission beam required by the array antenna; The transmitting extension is used to complete the transmission of the signal, and adopts a full amplifier chain. The signal is first amplified by a pre-amplifier to a level that can drive the final power amplifier, and the final stage adopts a four-level synthesis method.

5. The coupled and uncoupled integrated radar decoy system according to claim 4, characterized in that: The array antenna is a phased array antenna, which can control the azimuth of each waveform. When designing the waveform, a low sidelobe design is performed in the direction where the bait manager is located.

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