Target investigation and identification system

Abstract

The invention discloses a target investigation and identification system, which comprises a master unmanned platform, a slave unmanned platform, a master station radio station, a slave station radio station, photoelectric tracking equipment and an optical detector, the master station radio station and the photoelectric tracking device are installed on the master unmanned platform, the slave station radio station and the plurality of optical detectors are installed on the slave unmanned platform, the master station radio station is connected with the photoelectric tracking device, and the slave station radio station is connected with the optical detectors. The photoelectric tracking device and the optical detectors are installed on the two unmanned platforms respectively, the unmanned platforms have maneuverability, the distance and the angle between the photoelectric tracking device and the optical detectors can be adjusted at any time according to requirements, real-time information transmission is achieved through wireless communication, and investigation and recognition tasks are completed with high efficiency and high accuracy while the cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of unmanned platform detection, and in particular relates to a target detection and identification system. Background Art

[0002] The optoelectronic tracking device receives the infrared radiation energy of the threatening target appearing in the protection area through the scanning optical system, and focuses it on the integrated infrared medium-wave detector. The image processing subsystem in the optoelectronic tracking device detects the target image and determines the target angular position. The system control subsystem can obtain the target track through the long-period track association algorithm, complete the threat level sorting of the target, and report the comprehensive information of the target to the host computer. A single optoelectronic tracking device has a slow target search speed due to its single field of view and reconnaissance position. As special operation scenarios become more and more complex, the target reconnaissance system of a single detector is difficult to meet the current scenario requirements. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a target detection and identification system.

[0004] The present invention is achieved through the following technical solutions.

[0005] The present invention provides a target detection and identification system, comprising: a master unmanned platform, a slave unmanned platform, a master station radio, a slave station radio, an optoelectronic tracking device and an optical detector; the master station radio and the optoelectronic tracking device are installed on the master unmanned platform, the slave station radio and a plurality of the optical detectors are installed on the slave unmanned platform, the master station radio is connected to the optoelectronic tracking device, and the slave station radio is connected to the optical detector;

[0006] The master station radio station and the slave station radio station are used to realize the communication between the photoelectric tracking device and the optical detector;

[0007] The main unmanned platform is used to adjust the position and angle of the optoelectronic tracking equipment;

[0008] The slave unmanned platform is used to adjust the position and angle of the optical detector;

[0009] The photoelectric tracking device is used to collect photoelectric tracking data, receive optical detection data, process photoelectric tracking data and optical detection data, obtain the target position, and complete the target detection and identification tasks;

[0010] The optical detector is used to collect optical detection data and send the optical detection data to the optoelectronic tracking device.

[0011] Preferably, the master station radio station and the slave station radio station support COFDM technology and miniaturized radio frequency front-end technology.

[0012] Preferably, the master station radio station and the slave station radio station are respectively provided with omnidirectional antennas;

[0013] The master station rooftop and the slave station rooftop communicate via omnidirectional antennas;

[0014] The communication between the master station radio station and the slave station radio station supports the MESH multi-hop self-organizing network protocol.

[0015] Preferably, the photoelectric tracking data includes: infrared thermal imaging data, visible light camera data and target distance;

[0016] The photoelectric tracking device includes: a main control board, an infrared thermal imager, a visible light camera and a laser rangefinder, wherein the main control board is connected to the main unmanned platform, the infrared thermal imager, the visible light camera and the laser rangefinder respectively;

[0017] The main control board is used to obtain the system tracking mode, control the unmanned platform components according to the system tracking mode, control the infrared thermal imager, visible light camera and laser rangefinder, and process the optoelectronic tracking data;

[0018] The infrared thermal imager is used to generate infrared images, complete infrared radiation imaging, and obtain infrared thermal imaging data;

[0019] The visible light camera is used to complete the collection and processing of image information and obtain visible light camera data;

[0020] The laser rangefinder is used to measure the target distance.

[0021] Preferably, the system tracking modes include: automatic tracking mode, target guidance mode and manual search mode;

[0022] The automatic tracking mode specifically refers to: the main control board obtains the target side deviation, and controls the unmanned platform component according to the target side deviation so that the aiming line maintains automatic tracking of the target;

[0023] The target guidance mode specifically refers to: the main control board obtains the target position information forwarded by the upper system, and controls the unmanned platform components according to the target position information so that the aiming line is quickly aligned with the target;

[0024] The manual search mode specifically refers to: the main control board obtains the operation control instruction, and controls the unmanned platform components according to the operation control instruction.

[0025] Preferably, the infrared thermal imaging data includes: visible image data and temperature distribution image data;

[0026] The infrared thermal imager comprises a medium wave optical unit, an infrared imaging unit and a structural unit:

[0027] The medium wave optical unit is used to generate infrared images;

[0028] The infrared imaging unit is used to convert infrared radiation from the surface of the object into visible image data and temperature distribution image data;

[0029] The structural unit is used to integrate the medium wave optical unit and the infrared imaging unit into one.

[0030] Preferably, the visible light camera comprises: a continuous zoom unit, a focal plane unit, a television signal acquisition and processing unit, and a moving component control unit;

[0031] The continuous zoom unit is used to image the image information of the observed target on the focal plane unit;

[0032] The focal plane unit is used to collect image information;

[0033] The television signal acquisition and processing unit acquires and processes the image information collected by the focal plane unit to obtain visible light camera data;

[0034] The moving component control unit is used to control the zoom and focus motors, adjust the clarity of the image, and switch the colors.

[0035] Preferably, the photoelectric tracking device further comprises: an image tracking module, the image tracking module being connected to the main control board;

[0036] The image tracking module is used to calculate the target deviation measurement value and transmit the target deviation measurement value to the main control board.

[0037] Preferably, the optical detector comprises: an optical module, a target surface module, a collection and processing module and a gyro module;

[0038] The optical module is used to image the image information on the target surface module;

[0039] The target surface module is used to collect image information;

[0040] The acquisition and processing module is used to acquire and process the image information of the target surface module mobile phone to obtain optical detection data;

[0041] The gyro module is used to stabilize the line of sight of the optical detector.

[0042] The beneficial effects of the present invention are:

[0043] The photoelectric tracking equipment and several optical detectors of the present invention are respectively installed on two unmanned platforms. The unmanned platforms are mobile and can adjust the distance and angle between the two at any time according to needs. Real-time information transmission is achieved through wireless communication, which reduces costs while completing the detection and identification tasks with high efficiency and high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a schematic diagram of the system structure provided by an embodiment of the present invention;

[0045] Figure 2 It is a schematic diagram of the working principle of the photoelectric tracking device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0046] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0047] like Figure 1 As shown, a target detection and identification system provided by the present invention comprises: a master unmanned platform, a slave unmanned platform, a master station radio, a slave station radio, an optoelectronic tracking device and an optical detector; the master station radio and the optoelectronic tracking device are installed on the master unmanned platform, the slave station radio and a plurality of the optical detectors are installed on the slave unmanned platform, the master station radio is connected to the optoelectronic tracking device, and the slave station radio is connected to the optical detector;

[0048] In this embodiment, three optical detectors are included, namely optical detector 1, optical detector 2, and optical detector 3. The photoelectric tracking device is installed on one unmanned platform, and the three optical detectors are installed on another unmanned platform. The two unmanned platforms are mobile and can change the direction and distance between them as required, so that the angle and spacing between the photoelectric tracking device and the optical detector can be adjusted at any time to improve the efficiency of special operation reconnaissance.

[0049] Traditional unmanned platform reconnaissance uses a single photoelectric tracking device. Due to the single field of view and reconnaissance position, the target search speed of a single photoelectric tracking device is slow. As special operation scenes become more and more complex, the target reconnaissance system of a single detector is difficult to meet the current scene requirements. When using multiple photoelectric tracking devices, it is difficult to connect multiple photoelectric tracking devices, and information cannot be effectively transmitted, which leads to the inability to effectively improve the efficiency of target detection and identification; at the same time, multiple photoelectric tracking devices will result in higher costs. The optical detector used in the present invention is connected through wireless communication technology, which effectively improves the efficiency of target detection and identification at a low cost.

[0050] The master station radio station and the slave station radio station are used to realize the communication between the photoelectric tracking device and the optical detector;

[0051] The master station radio station and the slave station radio station support COFDM technology and miniaturized radio frequency front-end technology.

[0052] COFDM is the abbreviation of Coded Orthogonal Frequency Division Multiplexing, which is a multi-carrier modulation technology that divides a high-speed data stream into multiple lower-speed sub-data streams and then transmits them in parallel on multiple orthogonal sub-carriers. The data on each sub-carrier is encoded using a different modulation method, thereby improving the system's spectrum utilization and anti-interference ability.

[0053] The miniaturized RF front-end technology in this embodiment is specifically as follows: in terms of structure, a front- and back-side layout is adopted, with the front side being the RF link and the back side being the power supply and control circuit. By rationally planning the cavity depth on both sides, the total thickness of the module is controlled at 9.5 mm, which is convenient for system integration; the RF connector uses the SMP type ultra-small push-in RF coaxial connector, and the low-frequency connector uses the J63A type micro-rectangular electrical connector, both of which have the characteristics of small size, light weight, and excellent vibration resistance. For the RF link part, a full-chip solution is selected, and the connection between the chip device and the microstrip line is realized through the MCM process. The RF cavity adopts a two-layer cover plate design, and the inner cover plate is fixed with countersunk screws to improve the isolation between the transmission lines and ensure that the cavity does not produce resonance that may affect the performance; the outer cover plate is laser seam welded to ensure the airtightness of the RF part.

[0054] The miniaturization of the filter is the key and difficulty of the ultra-wideband receiving front end. In the receiving front end of this embodiment, three MMIC switch filter chips are selected as pre-selection filters in the 0.8GHz to 18GHz frequency band. Each switch filter chip integrates two switches and several filters, and the three chips integrate a total of 10 filter segments; for the 0.1GHz to 0.8GHz frequency band pre-selection filtering that the switch filter chip cannot temporarily cover, three miniaturized LC filters are selected to implement it. The LC filter uses customized chip capacitors and winding inductors to achieve the performance of conventional LC filters in a volume of 9mm×5mm×2mm. This form of LC filter is also used for IF2 and IF3 bandpass filters with a bandwidth of 80MHz. Other filters use MEMS bandpass filters, MMIC high / low-pass filters, and narrow-band surface acoustic wave filters.

[0055] The master station radio station and the slave station radio station are respectively provided with omnidirectional antennas;

[0056] The master station rooftop and the slave station rooftop communicate via omnidirectional antennas;

[0057] The communication between the master station radio station and the slave station radio station supports the MESH multi-hop self-organizing network protocol.

[0058] In a MESH multi-hop network, the master radio and the slave radio are each a node. A node has two functions. First, the node can act as an end node to generate or receive data packets. Second, the node can act as a router to forward data packets from other nodes. Each node has the function of receiving specific or non-specific data signals and also has the function of forwarding them.

[0059] The main unmanned platform is used to adjust the position and angle of the optoelectronic tracking equipment;

[0060] The slave unmanned platform is used to adjust the position and angle of the optical detector;

[0061] The photoelectric tracking device is used to collect photoelectric tracking data, receive optical detection data, process photoelectric tracking data and optical detection data, obtain the target position, and complete the target detection and identification tasks;

[0062] The photoelectric tracking data includes: infrared thermal imaging data, visible light imaging data and target distance;

[0063] The photoelectric tracking device includes: a main control board, an infrared thermal imager, a visible light camera and a laser rangefinder, wherein the main control board is connected to the main unmanned platform, the infrared thermal imager, the visible light camera and the laser rangefinder respectively;

[0064] The main control board is used to obtain the system tracking mode, control the unmanned platform components according to the system tracking mode, control the infrared thermal imager, visible light camera and laser rangefinder, and process the optoelectronic tracking data;

[0065] In this embodiment, the specific structure of the photoelectric tracking device is as follows: Figure 2 As shown, the power board is used to supply power to the main control board, the infrared thermal imager, the visible light camera, the laser rangefinder and other components. The main control board is used to control the unmanned platform components, which include a servo drive board, a gyroscope, a pitch encoder, a pitch motor, an azimuth encoder and an azimuth motor.

[0066] The system tracking modes include: automatic tracking mode, target guidance mode and manual search mode;

[0067] The automatic tracking mode specifically refers to: the main control board obtains the target side deviation, and controls the unmanned platform component according to the target side deviation so that the aiming line maintains automatic tracking of the target;

[0068] The target guidance mode specifically refers to: the main control board obtains the target position information forwarded by the upper system, and controls the unmanned platform components according to the target position information so that the aiming line is quickly aligned with the target;

[0069] The manual search mode specifically refers to: the main control board obtains the operation control instruction, and controls the unmanned platform components according to the operation control instruction.

[0070] The infrared thermal imager is used to generate infrared images, complete infrared radiation imaging, and obtain infrared thermal imaging data;

[0071] The infrared thermal imaging data includes: visible image data and temperature distribution image data;

[0072] The infrared thermal imager comprises a medium wave optical unit, an infrared imaging unit and a structural unit:

[0073] The medium wave optical unit is used to generate infrared images;

[0074] The infrared imaging unit is used to convert infrared radiation from the surface of the object into visible image data and temperature distribution image data;

[0075] The structural unit is used to integrate the medium wave optical unit and the infrared imaging unit into one.

[0076] The visible light camera is used to complete the collection and processing of image information and obtain visible light camera data;

[0077] The visible light camera comprises: a continuous zoom unit, a focal plane unit, a television signal acquisition and processing unit, and a moving parts control unit;

[0078] The continuous zoom unit is used to image the image information of the observed target on the focal plane unit;

[0079] The focal plane unit is used to collect image information;

[0080] The television signal acquisition and processing unit acquires and processes the image information collected by the focal plane unit to obtain visible light camera data;

[0081] The moving component control unit is used to control the zoom and focus motors, adjust the clarity of the image, and switch the colors.

[0082] The moving parts control unit controls the zoom and focus motors to switch the television receiving system between different fields of view and adjust the clarity of the image. In addition, it switches between black and white and color by controlling the switching target wheel.

[0083] The laser rangefinder is used to measure the target distance.

[0084] The laser rangefinder uses the time-of-flight measurement method to calculate the distance to the target. That is, when the laser rangefinder is measuring the distance to the target, the laser emission system of the rangefinder emits a pulse laser with a width of about 10ns, and the zero time point of the flight time is the moment of laser emission; after the pulse laser hits the target, it is reflected into space according to the characteristics of the target, and part of the reflected laser will enter the receiving optical system of the rangefinder. After being amplified and interpreted by the rangefinder, the received time is used as the cut-off time point of the flight time. In this way, the time from the pulse laser being emitted from the rangefinder to its return is measured, and then the distance between the laser rangefinder and the target can be calculated based on the propagation speed of the laser in the medium.

[0085] The photoelectric tracking device further comprises: an image tracking module, wherein the image tracking module is connected to the main control board;

[0086] The image tracking module is used to calculate the target deviation measurement value and transmit the target deviation measurement value to the main control board.

[0087] The optical detector is used to collect optical detection data and send the optical detection data to the optoelectronic tracking device.

[0088] The optical detector comprises: an optical module, a target surface module, a collection and processing module and a gyro module;

[0089] The optical module is used to image the image information on the target surface module;

[0090] The target surface module is used to collect image information;

[0091] The acquisition and processing module is used to acquire and process the image information of the target surface module mobile phone to obtain optical detection data;

[0092] The gyro module is used to stabilize the line of sight of the optical detector.

[0093] The radiation of the external scene is transmitted through the atmosphere, and is imaged on the target surface module of the photoelectric detector through the optical module. The acquisition and processing module converts the scene radiation information into electrical information, thereby converting the two-dimensional image of the space target and the scene into a time series of electrical images. The gyro installed in the pitch group senses the swing of the carrier, and through the gyro stabilization circuit, the optical detector keeps the aiming line stable, and the image sensor outputs a stable image.

[0094] The photoelectric tracking equipment and several optical detectors of the present invention are respectively installed on two unmanned platforms. The unmanned platforms are mobile and can adjust the distance and angle between the two at any time according to needs. Real-time information transmission is achieved through wireless communication, which reduces costs while completing the detection and identification tasks with high efficiency and high accuracy.

Claims

1. A target detection and identification system, characterized in that: include: Master unmanned platform, slave unmanned platform, master station radio, slave station radio, optoelectronic tracking equipment and optical detectors; The master station radio and the photoelectric tracking device are installed on the master unmanned platform, and the slave station radio and a plurality of the optical detectors are installed on the slave unmanned platforms, the master station radio is connected to the photoelectric tracking device, and the slave station radio is connected to the optical detector; The master station radio station and the slave station radio station are used to realize the communication between the photoelectric tracking device and the optical detector; The main unmanned platform is used to adjust the position and angle of the optoelectronic tracking equipment; The slave unmanned platform is used to adjust the position and angle of the optical detector; The photoelectric tracking device is used to collect photoelectric tracking data, receive optical detection data, process photoelectric tracking data and optical detection data, obtain the target position, and complete the target detection and identification tasks; The optical detector is used to collect optical detection data and send the optical detection data to the optoelectronic tracking device.

2. The target detection and identification system according to claim 1, characterized in that: The master station radio station and the slave station radio station support COFDM technology and miniaturized radio frequency front-end technology.

3. The target detection and identification system according to claim 1, characterized in that: The master station radio station and the slave station radio station are respectively provided with omnidirectional antennas; The master station rooftop and the slave station rooftop communicate via omnidirectional antennas; The communication between the master station radio station and the slave station radio station supports the MESH multi-hop self-organizing network protocol.

4. The target detection and identification system according to claim 1, characterized in that: The photoelectric tracking data includes: infrared thermal imaging data, visible light imaging data and target distance; The photoelectric tracking device includes: a main control board, an infrared thermal imager, a visible light camera and a laser rangefinder, wherein the main control board is connected to the main unmanned platform, the infrared thermal imager, the visible light camera and the laser rangefinder respectively; The main control board is used to obtain the system tracking mode, control the unmanned platform components according to the system tracking mode, control the infrared thermal imager, visible light camera and laser rangefinder, and process the optoelectronic tracking data; The infrared thermal imager is used to generate infrared images, complete infrared radiation imaging, and obtain infrared thermal imaging data; The visible light camera is used to complete the collection and processing of image information and obtain visible light camera data; The laser rangefinder is used to measure the target distance.

5. The target detection and identification system according to claim 4, characterized in that: The system tracking modes include: automatic tracking mode, target guidance mode and manual search mode; The automatic tracking mode specifically refers to: the main control board obtains the target side deviation, and controls the unmanned platform component according to the target side deviation so that the aiming line maintains automatic tracking of the target; The target guidance mode specifically refers to: the main control board obtains the target position information forwarded by the upper system, and controls the unmanned platform components according to the target position information so that the aiming line is quickly aligned with the target; The manual search mode specifically refers to: the main control board obtains the operation control instruction, and controls the unmanned platform components according to the operation control instruction.

6. The target detection and identification system according to claim 4, characterized in that: The infrared thermal imaging data includes: visible image data and temperature distribution image data; The infrared thermal imager comprises a medium wave optical unit, an infrared imaging unit and a structural unit: The medium wave optical unit is used to generate infrared images; The infrared imaging unit is used to convert infrared radiation from the surface of the object into visible image data and temperature distribution image data; The structural unit is used to integrate the medium wave optical unit and the infrared imaging unit into one.

7. The target detection and identification system according to claim 4, characterized in that: The visible light camera comprises: a continuous zoom unit, a focal plane unit, a television signal acquisition and processing unit, and a moving parts control unit; The continuous zoom unit is used to image the image information of the observed target on the focal plane unit; The focal plane unit is used to collect image information; The television signal acquisition and processing unit acquires and processes the image information collected by the focal plane unit to obtain visible light camera data; The moving component control unit is used to control the zoom and focus motors, adjust the clarity of the image, and switch the colors.

8. The target detection and identification system according to claim 4, characterized in that: The photoelectric tracking device further comprises: an image tracking module, the image tracking module being connected to the main control board; The image tracking module is used to calculate the target deviation measurement value and transmit the target deviation measurement value to the main control board.

9. The target detection and identification system according to claim 1, characterized in that: The optical detector comprises: an optical module, a target surface module, a collection and processing module and a gyro module; The optical module is used to image the image information on the target surface module; The target surface module is used to collect image information; The acquisition and processing module is used to acquire and process the image information of the target surface module mobile phone to obtain optical detection data; The gyro module is used to stabilize the line of sight of the optical detector.

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