Platform and method for testing response time of infrared alarm and countermeasure equipment

Abstract

The invention discloses a platform and a method for testing the response time of infrared alarm and confrontation equipment, and belongs to the technical field of infrared alarm and confrontation. Comprising an electric control system, target simulation equipment and a tested product, the target simulation equipment and the tested product are connected with the electric control system, the tested product is infrared alarm and confrontation equipment, and multiple sets of target simulation equipment are arranged in a view field of the tested product in a sliding mode in the circumferential direction; the target simulation equipment can emit medium-wave infrared light required by the infrared alarm sensor to a tested product, and can capture interference energy emitted by the tested product at the same time; and the electric control system carries out unified time service on the target simulation equipment and the tested product. According to the invention, the problems of low reaction time acquisition precision and the like caused by the fact that the traditional reaction time test method cannot automatically acquire each timestamp and the reaction time needs to be calculated and evaluated by combining the recorded picture with the timestamp through manual playback are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of infrared alarm and countermeasure, and in particular relates to a test platform and method for the reaction time of infrared alarm and countermeasure equipment. Background Art

[0002] When a vehicle (such as a civil aircraft) is located in certain areas, it may be threatened by infrared-guided intelligent agents launched by other personnel. Since the launch distance of the intelligent agent is short and the flying speed is fast, it is usually difficult for the vehicle driver to visually detect the attack of the intelligent agent and take protective measures, which poses a great threat to the safety of the vehicle.

[0003] In the related art, in order to enable the vehicle to effectively warn when attacked by an intelligent body and to interfere with the seeker of the attacking intelligent body by emitting lasers to make it deviate from the route, an infrared warning and countermeasure device can be installed on the vehicle. The reaction time of the infrared warning and countermeasure device, namely the warning reaction time, interference reaction time, multi-target interference time, system reaction time, etc., is the core indicator of the infrared warning and countermeasure device, which is directly related to the effectiveness of the device and the survivability of the vehicle. Therefore, accurately and efficiently measuring the reaction time of the infrared warning and countermeasure device is very important for evaluating the performance of the infrared warning and countermeasure device.

[0004] The traditional reaction time test method is to set up a high-speed camera to simultaneously record the infrared target source, the device under test, and the display screen reporting the signal of the device under test, and then calculate and evaluate the reaction time by manually replaying the recorded images combined with the timestamp. This method has the disadvantages of complex test scene construction, poor time accuracy, and low level of scene test automation. Summary of the invention

[0005] Technical issues to be solved:

[0006] In order to avoid the shortcomings of the prior art, the present invention provides a test platform and method for the reaction time of infrared alarm and countermeasure equipment, the test platform includes an electronic control system, a target simulation device and a product under test, the target simulation device integrates a target source, a light-shielding shutter, a detection response unit, a GPS time synchronization unit, an infrared point source, and is set within the field of view of the product under test; the target simulation device and the product under test are controlled and data collected by the electronic control system, and the collected data is processed to obtain the reaction time of the infrared alarm and countermeasure equipment. The present invention solves the problem that the traditional reaction time test method cannot automatically obtain each time stamp, and needs to calculate and evaluate the reaction time by manually replaying the recorded screen combined with the time stamp, resulting in low reaction time acquisition accuracy.

[0007] The technical solution of the present invention is: a test platform for the reaction time of infrared warning and countermeasure equipment, comprising an electronic control system and a target simulation device connected thereto, and a product under test, wherein the product under test is an infrared warning and countermeasure equipment, and multiple sets of target simulation devices are arranged in a circumferential manner in a sliding manner within the field of view of the product under test;

[0008] The target simulation device can emit the medium-wave infrared light required by the infrared alarm sensor to the product under test, and can also capture the interference energy emitted by the product under test;

[0009] The electronic control system synchronizes the timing of the target simulation device and the product under test, and can accurately obtain the time when the target simulation device emits medium-wave infrared light, the infrared alarm time of the product under test, the time when the product under test locks the position of the target simulation device and emits a laser beam, and the time when the target simulation device detects interference energy, thereby calculating the infrared alarm and the reaction time of the countermeasure device.

[0010] A further technical solution of the present invention is: the target simulation device includes a target source, a shading shutter, a detection response unit, and an infrared point source. The target source emits infrared radiation of a fixed band, and a shading shutter is set at the starting point of the emission path. The shading shutter is controlled to control the emission time of the infrared light from the target source; the detection response unit collects the interference laser beam emitted by the countermeasure device through a front auxiliary optical path; the infrared point source is used to provide the infrared light required for the countermeasure device to lock the target.

[0011] A further technical solution of the present invention is: two sets of the target simulation equipment are installed on the annular guide rail through a supporting platform, and the azimuth difference θ can be continuously adjusted within 10° to 180°.

[0012] A further technical solution of the present invention is that the target source emits light in the mid-infrared band of 3.7 μm to 4.8 μm.

[0013] A further technical solution of the present invention is that the detection response unit is provided with a laser aligner capable of emitting a cross cursor, and before testing, the cross cursor is aligned with the optical axis center of the optical system of the product under test, thereby ensuring that the laser can enter the detection response unit.

[0014] A further technical solution of the present invention is: the electronic control system includes a GPS time synchronization subsystem and a data processing subsystem, and the GPS time synchronization subsystem is used to uniformly synchronize the time of the target source and the detection response unit of the product under test and the target simulation device; the data processing subsystem is respectively connected to the target source, the light-shielding shutter, the detection response unit, the PS time synchronization subsystem, and the product under test, and is used to control the action execution of each part and record the action execution time.

[0015] A further technical solution of the present invention is: the data processing subsystem includes an interference test unit and a control computer; the interference test unit is connected to the product under test and each execution component, controls the action execution of the target source, the light-shielding shutter, the infrared point source, the detection and response unit and the GPS time synchronization subsystem, receives the feedback information from the GPS time synchronization subsystem, the detection and response unit and the product under test, and accurately measures the response time of each link of the product under test; the background data processing system of the control computer can calculate the alarm reaction time, the target interception and tracking time, the system reaction time, the interference reaction time and the multi-target interference time interval.

[0016] A further technical solution of the present invention is: the calculation method of the infrared warning and countermeasure equipment reaction time is: respectively obtaining the time t of the first target simulation equipment emitting medium-wave infrared light 0 , infrared alarm time t of the product under test 1 , the time t when the product under test locks the position of the first target simulation device and emits the laser beam 2 , the time t when the first target simulation device detects the interference energy 3 , by t 1 -t 0 Calculate the alarm response time; by t 2 -t 1 Calculate the interference reaction time; by t 2 -t 0 Calculate system response time.

[0017] A further technical solution of the present invention is: the method for calculating the time interval of the infrared warning and countermeasure equipment being interfered by multiple targets is to obtain the time t when the second target simulation equipment detects the interference energy. 4 , by t 4 -t 3 Calculate the multi-target interference time interval.

[0018] A method for testing the reaction time of infrared alarm and countermeasure equipment, the specific steps are as follows:

[0019] Two sets of target simulation equipment are arranged at set positions in front of the wide-field infrared warning and countermeasure equipment;

[0020] Turn on the cross laser alignment device on the target simulation device, adjust the target source and infrared point source on the target simulation device as a whole, align the center of the cross with the optical axis of the countermeasure device, and lock the installation tooling of the target simulation device;

[0021] The target source of the first target simulation device is turned on, and the light-shielding shutter of the first target simulation device is controlled by the electronic control system to open, and the light-shielding shutter opening time t is recorded. 0 ; After the target source radiation energy is identified by the alarm device, an alarm signal is given, and the reporting time is t1 ; The countermeasure device adjusts the optical axis to the target warning direction according to the warning signal. The infrared receiving unit of the countermeasure device accurately captures the point target, locks the countermeasure target and emits interference laser, reporting the time t 2 ; The detection response unit on the first target simulation device detects the interference energy and then feeds back a pulse signal. The data processing system analyzes the rising edge of the pulse wave and gives the time t 3 ;

[0022] By 1 -t 0 Calculate the alarm response time; by t 2 -t 1 The interference reaction time is calculated;

[0023] When conducting a multi-target interference time interval test, two sets of target simulation systems are turned on at the same time, and the above steps are performed in sequence. 2 After the time, the infrared warning and countermeasure equipment rotates by angle θ, tracks and locks the infrared point source of the second target simulation device, and then emits a second interfering laser beam. After the laser beam is captured by the detection response unit, the data processing subsystem records this time point t 4 time; by t 4 -t 3 The multi-target interference time is calculated.

[0024] Beneficial Effects

[0025] The beneficial effect of the present invention is that the present invention can accurately test the interference performance and various system times of the interference equipment under test. It can measure test items such as system reaction time, countermeasure tracking and locking time, multi-target time interval, system reaction time and interference reaction time. The test scene is easy to build, the test process is simple, the test automation is high, and the accuracy is good. It has been verified that the test accuracy of the reaction time of the traditional method is more than 500ms, and the present invention can reach within 10ms.

[0026] The present invention utilizes a light-shielding shutter to accurately control the infrared radiation light source signal and the time of entering the alarm device, and records it through a data processing subsystem. The time when the alarm signal is generated and the time when the countermeasure device emits the laser can both be recorded through the data processing subsystem, thereby testing the alarm reaction time and the countermeasure reaction time. The entire process is fully automated, avoiding the precision error of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the platform structure of this application;

[0028] Figure 2 It is a deployment diagram of this application;

[0029] Figure 3It is a data flow diagram of this application;

[0030] Figure 4 It is a flow chart of the alarm time test method of the present application;

[0031] Figure 5 It is a flow chart of the interference reaction time and system reaction time testing method of the present application.

[0032] Explanation of the accompanying drawings: 1. GPS time synchronization subsystem, 2. Data processing subsystem, 3. Electronic control system, 4. First light-shielding shutter, 5. First target source, 6. Second light-shielding shutter, 7. Second target source, 8. Second infrared point source, 9. Second detection and response unit, 10. First infrared point source, 11. First detection and response unit, 12. Target simulation device, 13. Product under test; 21. Guide rail, 22. Support platform, 23. Cable. DETAILED DESCRIPTION

[0033] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0034] Since traditional reaction time testing methods cannot automatically obtain each timestamp, it is necessary to manually replay the recorded images in combination with the timestamps to calculate and evaluate the reaction time, which leads to problems such as low reaction time acquisition accuracy. The present invention provides a test platform for the reaction time of infrared alarm and countermeasure equipment, including an electronic control system and a target simulation device and a product under test connected thereto. The product under test is an infrared alarm and countermeasure equipment, and multiple sets of target simulation devices are circumferentially arranged in a sliding manner in the field of view of the product under test; the target simulation device can emit medium-wave infrared light required by the infrared alarm sensor to the product under test, and can capture the interference energy emitted by the product under test; the electronic control system synchronizes the time of the target simulation device and the product under test, and can accurately obtain the moment when the target simulation device emits the medium-wave infrared light, the infrared alarm moment of the product under test, the moment when the product under test locks the position of the target simulation device and emits a laser beam, and the moment when the target simulation device detects the interference energy, thereby calculating the reaction time of the infrared alarm and countermeasure equipment.

[0035] The target simulation device includes a target source, a light-shielding shutter, a detection and response unit, and an infrared point source. The target source is used to provide fixed-band infrared radiation, that is, the medium-wave infrared light required by the infrared warning sensor. A light-shielding shutter for accurately controlling the emission of infrared light is arranged along the emission direction of the target source. A support platform and a guide rail for supporting the target source to make circular motion in the azimuth direction are arranged below the target source. The infrared point source is used to provide the infrared light required for the countermeasure device to lock the target. The detection and response unit collects the laser beam emitted by the countermeasure product through the front auxiliary optical path, and records the time point of receiving the laser through the data processing subsystem. The light-shielding shutter is used in combination with the target source to release the infrared signal, and the infrared point source is used in combination with the detection and response unit to capture the laser beam of the product under test.

[0036] The electronic control system includes a GPS time synchronization subsystem and a data processing subsystem. The control system of the data processing subsystem is respectively connected to the target source, the shading shutter, the GPS time synchronization subsystem, the detection and response unit, and the comprehensive information unit of the device under test; the control system of the data processing subsystem is used to control the shading shutter to control the emission time of the infrared light of the target source. The data processing subsystem can perform unified time synchronization for the infrared alarm and countermeasure equipment under test and the target source and the detection and response unit through the GPS time synchronization subsystem; the infrared alarm and countermeasure equipment under test is connected to the data processing subsystem through a dedicated test interface; the data processing subsystem is mainly responsible for the operation drive of the test platform, and the data subsystem of the data processing subsystem is presented in the form of software, with a human-computer interaction interface, which can realize the functions of equipment information entry, equipment control, result display, test design, test progress display, data export, historical data viewing, etc.

[0037] As a preferred method, the data processing subsystem includes an interference test unit and a control computer. The interference test unit is mainly used to connect with the product under test and various execution devices, control the actions of equipment such as the target source, light-shielding shutter, infrared point source, detection response unit and GPS time synchronization subsystem, receive feedback information from the GPS time synchronization subsystem, detection response unit and the product under test, and accurately measure the response time of each link of the system under test. The background data processing system of the control computer can calculate the alarm reaction time, target interception and tracking time, system reaction time, interference reaction time, multi-target interference time interval, etc.

[0038] As a preferred embodiment, the target source is a mid-infrared band light of 3.7 μm to 4.8 μm. In some embodiments with special requirements, infrared light of a special band can be emitted by installing a filter in front of the target source.

[0039] As a preferred embodiment, the target sources of the two sets of target simulation devices are respectively mounted on the support platforms, and are slidably mounted on the annular guide rails through the support platforms, and the azimuth difference θ can be continuously adjusted within 10° to 180°;

[0040] As a preferred embodiment, the light-shielding shutter is used in conjunction with the target source and is program-controlled by a data processing subsystem; the light-shielding shutter has an opening and closing feedback circuit, which can allow the alarm infrared light source to pass through the light-shielding shutter according to a preset time, so that the alarm product captures the infrared light signal.

[0041] As a preferred embodiment, the detection response unit is designed with a laser aligner that can emit a cross cursor. Before testing, the cross cursor can be aligned with the center of the optical axis of the optical system of the tested countermeasure product, thereby ensuring that the laser can enter the detection response unit.

[0042] In order to achieve the above-mentioned invention objectives, the present invention also provides a method for testing the alarm reaction time and the countermeasure reaction time by using the infrared light source, the light-shielding shutter, the data processing subsystem and the like of the above-mentioned platform. The method uses the light-shielding shutter to accurately control the emission time of the alarm infrared light source, and accurately records the time when the alarm and countermeasure products under test generate alarm signals and emit lasers to determine the alarm reaction time and the countermeasure reaction time.

[0043] As a preferred embodiment, the testing method comprises the following steps:

[0044] Step (a): Place two sets of target simulation equipment (integrated with target source, light-shielding shutter, support platform, detection and response unit, GPS time synchronization unit, infrared point source) at a distance of 2 m in front of the large field of view warning system;

[0045] Step (b): Turn on the cross laser indicator on the target simulation device, adjust the target source and the infrared point source as a whole, align the center of the cross with the optical axis of the countermeasure system, and lock the tooling.

[0046] Step (c): Open the target source on one side, control the light-shielding shutter to open, and record the light-shielding shutter opening time t 0 ; After the target source radiation energy is identified by the alarm device, an alarm signal is given, and the reporting time is t 1 The countermeasure device adjusts the optical axis to the target warning direction according to the warning signal. The infrared receiving unit of the countermeasure device accurately captures the point target and reports the time t after locking the countermeasure target. 2 The countermeasure device receives the interference signal and emits laser interference. The detection response unit on the target simulation device detects the interference energy and then feeds back a pulse signal. The data processing system analyzes the rising edge of the pulse wave and gives the time t 3 .

[0047] Step (d): In the experiment of testing the time interval of multi-target interference, two sets of target simulation systems are turned on at the same time. After going through the test process described in the above steps in sequence, the pulse rising edge time t of the laser captured by the detection response unit is recorded. 4 , (t 4 -t 3) is the multi-target interference time interval.

[0048] As a preferred method, the above test steps will involve laser emission and human eye safety protection requirements. In order to avoid harm to the operator and other experimenters, this solution designs an enclosure structure from a system level. The enclosure size is 1m×2m, and it is connected by multiple enclosures and set in the possible direction of laser irradiation. The enclosure adopts a pulley structure for easy storage.

[0049] The above technical solution is further described below in conjunction with the accompanying drawings:

[0050] Example 1

[0051] Reference Figure 1 As shown, the present embodiment is a test platform for the reaction time of infrared alarm and countermeasure equipment, including a detection and response unit 9 / 11 for detecting the laser signal of the product under test 13, an infrared point source 8 / 10 for providing the infrared light required by the product under test 13, a target source 5 / 7 for providing the medium-wave infrared light required by the product under test 13, a light-shielding shutter 4 / 6 for controlling the emission moment of the target source 5 / 7, a GPS time synchronization subsystem 1 for performing time synchronization on the platform, and a data processing subsystem 2 responsible for the entire platform.

[0052] Preferably, the target source 5 / 7 is a medium-wave infrared target source, and the main emitted light is infrared light in the 3-5 um band. Band filtering can be performed by adding filters to meet the requirements of the product 13 under test.

[0053] Preferably, the synchronization accuracy of the GPS time synchronization subsystem 1 is better than 200ns, the number of time information output channels is not less than 6, and the timing accuracy is better than 30ns.

[0054] Preferably, the response time of the light-shielding shutter 4 / 6 is within 100ms, and the opening time is within 15ms. A signal indicating that the light-shielding shutter has been fully opened can be fed back to determine the precise moment when the target source emits infrared radiation.

[0055] Preferably, the detection and response unit 9 / 11 operates at a wavelength ranging from 1 μm to 5 μm.

[0056] Preferably, the radiation uniformity of the medium-wave infrared light of the target source 5 / 7 is not less than 85%.

[0057] Preferably, the GPS time synchronization subsystem 1 performs GPS synchronization timing on the data processing subsystem 2, the target source 5 / 7 and the product under test 13 through the GPS synchronization clock device for the processing subsystem connected thereto.

[0058] Preferably, the data processing subsystem 3 is mainly responsible for the operation drive of the system, is presented in the form of software, has a human-computer interaction interface, and can realize functions such as equipment information entry, equipment control, result display, test design, test progress display, data export, and historical data viewing.

[0059] Example 2

[0060] Reference Figure 2 As shown, this embodiment illustrates the deployment schematic diagram of the test platform for infrared alarm and countermeasure device reaction time. The data processing subsystem 2 and the tested product 13 will be deployed on different support platforms 22 respectively to facilitate test development and personnel operation.

[0061] The size of the support platform 22 must be sufficient to accommodate relevant equipment and facilitate operation.

[0062] Two sets of target sources with light-shielding shutters, detection response units, and infrared point sources 8 / 10 will be arranged on a circular guide rail 21 that is substantially level with the product 13 under test.

[0063] Preferably, the azimuth difference of the two sets of target simulation devices 12 with light-shielding shutters is continuously adjustable, with a maximum of 180°, and has a pitch angle adjustment function.

[0064] Preferably, the product 13 to be tested is located at the inner center of the annular guide rail 21, and the platform floor occupies a space no larger than 5m×5m.

[0065] Example 3

[0066] Reference Figure 3 As shown, this embodiment illustrates the data flow diagram of the test platform for infrared alarm and countermeasure device reaction time. The GPS time synchronization subsystem 1 performs unified GPS timing synchronization on the tested product 13, target source 5 / 7, light shielding shutter 4 / 6, infrared point source 8 / 10, detection response unit 9 / 11 and data processing subsystem 2.

[0067] The data processing subsystem 2 includes an interference test unit and a control computer. The interference test unit is mainly used to connect with the product under test 13 and various execution devices, control the actions of the infrared target source, light-shielding shutter, infrared point source, detection and response unit and GPS time synchronization subsystem 1, receive feedback information from the GPS time synchronization subsystem 1, the detection and response unit and the product under test 13, and accurately measure the response time of each link of the system under test.

[0068] The background data processing system of the control computer calculates the alarm response time, target interception and tracking time, system response time, interference response time, and multi-target interference time interval and provides further analysis. The human-machine interface of the control computer provides functions such as equipment information entry, equipment control, result display, test design, test progress display, data export, and historical data viewing.

[0069] Example 4

[0070] Reference Figure 4 As shown, this embodiment provides a method for testing the alarm reaction time using the platform in Embodiment 1, and the testing method includes the following steps:

[0071] Step (a): After the equipment is started, each instrument is initialized.

[0072] Step (b): After initialization is completed, the GPS time synchronization subsystem is used to perform time synchronization calibration on the interference device under test and the interference test unit.

[0073] Step (c): Control the startup target source.

[0074] Step (d): Control the opening of the light-shielding shutter through TTL triggering, collect feedback from the light-shielding shutter photoelectric proximity switch, and record the light-shielding shutter opening time t 0 Upload data processing subsystem.

[0075] Step (e): The system is always waiting for the feedback information from the alarm processing system.

[0076] Step (f): The alarm processing system receives the target source signal and returns the time information.

[0077] Step (g): After receiving the feedback information, the interference test unit sends the time information t 1 The package is sent to the data processing subsystem.

[0078] Step (h): The data processing subsystem processes and calculates the alarm time (t 1 -t 0 ).

[0079] Example 5

[0080] Reference Figure 5 As shown, this embodiment provides a method for testing interference reaction time and system reaction time using the platform in Embodiment 1, and the testing method includes the following steps:

[0081] Step (1): Power on the device and initialize all software and instruments.

[0082] Step (2): After initialization is completed, the GPS time synchronization subsystem is used to perform time synchronization calibration on the interference device under test and the interference test unit.

[0083] Step (3): Control the start of the target source and control the start of the laser detection response unit.

[0084] Step (4): Control the target source to act and supply power to the target source AB. 0 The opening of the light-shielding shutter is controlled by TTL trigger at all times.

[0085] Step (5): After receiving the infrared target information, the countermeasure device processes the data. After the target source radiation energy is identified by the alarm device, an alarm signal is given and the reporting time t 1 ;

[0086] Step (6): the adversarial device searches for a laser detector, i.e., a detection response unit;

[0087] Step (7): The countermeasure device emits lasers to laser detector (detection response unit) A and laser detector B respectively, and reports the time t 2 ;

[0088] Step (8): After receiving the laser, the laser detector A generates time information t 3 Send back to the data processing subsystem;

[0089] Step (9): After receiving the laser, the laser detector B generates time information t 4 Send back to the data processing subsystem;

[0090] Step (10): the data processing subsystem receives the time information returned by the interference test unit;

[0091] Step (11): After receiving the time information of each stage, the data processing subsystem summarizes and processes and calculates the interference reaction time (t 2 -t 1 ) and system response time (t 2 -t 0 ) to complete the measurement work.

[0092] It should be noted that, for the sake of simplicity, the embodiments of the present application are described as a series of component combinations, but those skilled in the art should be aware that the device of the present application is not limited by the materials and components described, because according to the present application, certain materials and components can be replaced by other materials and components. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the present application.

[0093] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. A test platform for infrared alarm and countermeasure equipment reaction time, characterized by: It includes an electronic control system and a target simulation device connected thereto, and a product under test. The product under test is an infrared warning and countermeasure device. Multiple sets of target simulation devices are arranged in a sliding manner along the circumference in the field of view of the product under test; The target simulation device can emit the medium-wave infrared light required by the infrared alarm sensor to the product under test, and can also capture the interference energy emitted by the product under test; The electronic control system synchronizes the timing of the target simulation device and the product under test, and can accurately obtain the time when the target simulation device emits medium-wave infrared light, the infrared alarm time of the product under test, the time when the product under test locks the position of the target simulation device and emits a laser beam, and the time when the target simulation device detects interference energy, thereby calculating the infrared alarm and the reaction time of the countermeasure device.

2. A test platform for infrared alarm and countermeasure equipment reaction time according to claim 1, characterized in that: The target simulation device includes a target source, a light shielding shutter, a detection response unit, and an infrared point source. The target source emits infrared radiation of a fixed band, and a light shielding shutter is set at the starting point of the emission path. The light shielding shutter is controlled to control the emission time of the infrared light from the target source; the detection response unit collects the interference laser beam emitted by the countermeasure device through the front auxiliary optical path; The infrared point source is used to provide infrared light required for the countermeasure device to lock onto a target.

3. A test platform for infrared alarm and countermeasure equipment reaction time according to claim 2, characterized in that: The two sets of target simulation equipment are installed on the annular guide rail through a supporting platform, and the azimuth difference θ can be continuously adjusted within 10° to 180°.

4. A test platform for infrared alarm and countermeasure equipment reaction time according to claim 2, characterized in that: The target source emits light in the mid-infrared band of 3.7 μm to 4.8 μm.

5. A test platform for infrared alarm and countermeasure equipment reaction time according to claim 2, characterized in that: The detection response unit is provided with a laser aligner capable of emitting a cross cursor. Before testing, the cross cursor is aligned with the center of the optical axis of the optical system of the product under test, thereby ensuring that the laser can enter the detection response unit.

6. A test platform for infrared alarm and countermeasure equipment reaction time according to claim 2, characterized in that: The electronic control system includes a GPS time synchronization subsystem and a data processing subsystem, through which the target source and detection response unit of the tested product and the target simulation device are uniformly timed; the data processing subsystem is respectively connected to the target source, the light-shielding shutter, the detection response unit, the PS time synchronization subsystem, and the tested product, and is used to control the execution of actions of each part and record the execution time of the actions.

7. A test platform for infrared alarm and countermeasure equipment reaction time according to claim 6, characterized in that: The data processing subsystem includes an interference test unit and a control computer; the interference test unit is connected to the product under test and each execution component, controls the execution of the target source, light-shielding shutter, infrared point source, detection and response unit and GPS time synchronization subsystem, receives feedback information from the GPS time synchronization subsystem, detection and response unit and the product under test, and accurately measures the response time of each link of the product under test; the background data processing system of the control computer can calculate the alarm reaction time, target interception and tracking time, system reaction time, interference reaction time and multi-target interference time interval.

8. A test platform for infrared alarm and countermeasure equipment reaction time according to claim 1, characterized in that: The calculation method of the infrared alarm and countermeasure device reaction time is as follows: respectively obtain the moment t0 when the first target simulation device emits medium-wave infrared light, the infrared alarm moment t1 when the tested product, the moment t2 when the tested product locks the position of the first target simulation device and emits a laser beam, and the moment t3 when the first target simulation device detects interference energy, and calculate the alarm reaction time by t1-t0; calculate the interference reaction time by t2-t1; and calculate the system reaction time by t2-t0.

9. A test platform for infrared alarm and countermeasure equipment reaction time according to claim 8, characterized in that: The method for calculating the time interval when the infrared warning and countermeasure device is interfered with by multiple targets is to obtain the time t4 when the second target simulation device detects the interference energy, and calculate the multi-target interference time interval by t4-t3.

10. A method for testing the reaction time of infrared alarm and countermeasure equipment, which is implemented based on the test platform for the reaction time of infrared alarm and countermeasure equipment according to any one of claims 1 to 9; characterized in that The specific steps are as follows: Two sets of target simulation equipment are arranged at set positions in front of the wide-field infrared warning and countermeasure equipment; Turn on the cross laser alignment device on the target simulation device, adjust the target source and infrared point source on the target simulation device as a whole, align the center of the cross with the optical axis of the countermeasure device, and lock the installation tooling of the target simulation device; The target source of the first target simulation device is turned on, and the light-shielding shutter of the first target simulation device is controlled by the electronic control system to open, and the light-shielding shutter opening time t0 is recorded; the target source radiation energy is identified by the alarm device and an alarm signal is given, and the reporting time is t1; the countermeasure device adjusts the optical axis to the target alarm direction according to the alarm signal, and the infrared receiving unit of the countermeasure device accurately captures the point target, locks the countermeasure target and emits interference laser, and reports the time t2; the detection response unit on the first target simulation device feeds back a pulse signal after detecting the interference energy, and the data processing system analyzes the rising edge of the pulse wave and gives the time t3; The alarm response time is calculated by t1-t0; the interference response time is calculated by t2-t1; When conducting a multi-target interference time interval test, two sets of target simulation systems are turned on at the same time, and the above steps are performed in sequence. After time t2, the infrared warning and countermeasure device rotates by angle θ, tracks and locks the infrared point source of the second target simulation device, and then emits a second interference laser beam. After the laser beam is captured by the detection and response unit, the data processing subsystem records this time point t4; The multi-target interference time is calculated by t4-t3.

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