Panoramic infrared search detection system and method with high data rate

Abstract

The invention relates to a panoramic infrared search detection system and method with a high data rate, and the system comprises a servo rotating mechanism which is used for transmitting laser and infrared light to an infrared laser splitting element through azimuth scanning; the light splitting element is used for receiving the infrared light transmitted by the servo rotating mechanism and reflecting the laser emitted by the reverse scanning laser distance measuring sensor to the servo rotating mechanism; the reverse scanning laser distance measuring sensor is used for acquiring distance measuring information of each target in an azimuth scanning process through multi-pulse laser; the optical reflector is used for receiving the infrared light and totally reflecting the infrared light to the avalanche diode infrared sensor; the avalanche diode infrared sensor is used for outputting multiple frames of images with preset frequency; and the comprehensive information processing unit is used for splicing the multiple frames of images to obtain an infrared panoramic image higher than 5Hz. According to the invention, through combination of infrared passive imaging and laser ranging technical means, high-data-rate multi-target information rapid acquisition is realized in a lightweight manner.

Description

Technical Field

[0001] This invention belongs to the field of infrared detection technology, specifically relating to a high data rate panoramic infrared search and detection system and method, and more particularly to a lightweight, high data rate infrared search and detection system for rapid acquisition of multi-target information. Background Technology

[0002] In recent years, with the rapid development of unmanned control technology, the demand for drone detection has been increasing daily. However, this has led to high precision requirements for detection equipment, significant detection challenges, and a lack of effective detection methods. Radio-based radar equipment, as active detection devices, can detect drone targets at long distances by emitting high-power electromagnetic waves, but it cannot distinguish or identify the target. Especially in complex environments, it is prone to misjudgment and is also costly. In contrast, optoelectronic equipment, as a passive detection device, offers advantages such as intuitive images, high detection accuracy, strong identification capabilities, and low cost. Once a drone target is captured and tracked, combined with laser ranging technology, it can provide accurate information such as the target's azimuth, elevation, and distance.

[0003] Optoelectronic devices typically use visible light television, infrared thermal imagers, and laser rangefinders as sensors for target acquisition and tracking. They can be broadly categorized into tracking-type and panoramic-type optoelectronic devices. Tracking-type devices generally have a small field of view and require additional equipment, such as radar, to provide target indication information and guide the tracking device to a specific location for detecting, tracking, and identifying drones. However, this combination of radar and optoelectronic systems is costly. Panoramic-type optoelectronic devices, on the other hand, possess 360° search and detection capabilities. A single device can achieve wide-area target acquisition and identification for drones, offering high efficiency and low cost in complex environments.

[0004] In their paper "A Review of the Development of Infrared Search and Tracking Systems" (Optoelectronic Technology Application, vol. 31(4), 2016), Shi Yongshan et al. detailed the development history of panoramic infrared search and tracking systems. Infrared search and tracking systems typically cover 360° of azimuth and employ two main systems: distributed staring and rapid scanning with image shift correction. Distributed staring systems generally use multiple infrared sensors to perform surveillance and tracking tasks within a certain area, then overlap and stitch the fields of view to achieve 360° omnidirectional coverage. The French ARTEMIS system is a typical example of distributed staring technology, using a large-scale mid-wave infrared focal plane array. It combines three infrared sensors to cover 360° of azimuth, with a data update frequency of up to 10Hz. This technology offers high data output, but requires multiple infrared sensors for stitching, resulting in high costs. The VAMPIR NG infrared search and tracking system is a typical example of rapid scanning with image shift correction, using a high-resolution cooled mid-wave infrared continuous scanning synchronous image shift correction imaging system to cover a 360° panoramic view. This technology requires only a single infrared sensor, is inexpensive, and is well-suited for searching and tracking UAV targets in complex environments. For example, Chinese invention patent (publication number CN 109507687 A) designs an integrated search and tracking device. A two-dimensional servo turntable drives the search module and imaging detection module to perform azimuth and pitch rotation, enabling search and tracking functions on a single detection system. Chinese invention patent (publication number CN 117495914 A) describes a multi-band, perimeter-scanning, integrated photoelectric early warning and identification system. Visible light imaging, infrared imaging, and laser ranging are all mounted on a precision tracking frame, enabling the detection of low-altitude flying targets such as drones through search and early warning.

[0005] In existing panoramic infrared search and detection systems, infrared sensors are mostly mounted on a turntable within a two-dimensional mechanical frame. A torque servo motor drives the turntable to achieve 360° omnidirectional target search. This approach suffers from drawbacks such as large turntable size and weight, low scanning speed (typically a maximum of 360° / s), and large rotational inertia. Furthermore, the integration time of infrared sensors is generally in the range of 3 to 10 milliseconds. Due to limitations in the output frame rate, the system's 360° panoramic image target data rate is low (typically 1Hz), which cannot meet the demands of rapid acquisition and detection of increasingly fast-flying unmanned aerial vehicle (UAV) targets. Summary of the Invention

[0006] To achieve lightweight and high data rate infrared search and detection systems, a high data rate panoramic infrared search and detection system is provided in a first aspect of the present invention, comprising: a servo rotation mechanism for transmitting laser and infrared light to an infrared laser beam splitter through azimuth scanning; a beam splitter for receiving the infrared light transmitted by the servo rotation mechanism and reflecting the laser emitted by a back-scanning laser rangefinder to the servo rotation mechanism; a back-scanning laser rangefinder for acquiring ranging information of each target during the azimuth scanning process using multi-pulse laser; an optical reflector for receiving the infrared light transmitted by the beam splitter and totally reflecting the infrared light to an avalanche diode infrared sensor; an avalanche diode infrared sensor for outputting multiple frames of images at a preset frequency based on the received infrared light; and a comprehensive information processing unit for stitching the multiple frames of images based on the ranging information of each target to obtain an infrared panoramic image with a frequency higher than 5Hz.

[0007] In some embodiments of the present invention, the servo rotation mechanism includes: an optical protection window for transmitting laser and infrared light to an infrared laser beam splitter; a two-dimensional scanning reflector for reflecting the infrared light from the optical protection window to a reverse-scanning laser rangefinder and reflecting the multi-pulse laser from the reverse-scanning laser rangefinder to the optical protection window; and an azimuth servo motor for driving the optical protection window and the silicon carbide two-dimensional scanning reflector to perform azimuth rotation.

[0008] Furthermore, the main structure of the two-dimensional scanning mirror is made of silicon carbide.

[0009] In some embodiments of the present invention, the back-scanning laser ranging sensor includes: a pulsed laser for emitting multiple first pulsed laser beams; and a back-scanning element for scanning the multiple first pulsed laser beams on a laser reflector and scanning the multiple second pulsed laser beams to a laser receiving avalanche diode. A laser reflector is used to reflect multiple first-pulse laser beams to a beam splitter and to reflect multiple second-pulse laser beams returned from the beam splitter to a laser receiving optical system; a laser receiving optical system is used to receive the multiple second-pulse laser beams returned from the laser reflector; and a laser receiving avalanche diode is used to convert the multiple second-pulse laser beams into electrical signals.

[0010] In some embodiments of the present invention, the avalanche diode infrared sensor includes: an infrared optical system for receiving infrared light reflected by an optical mirror; and an infrared detector for outputting multiple frames of images at a preset frequency based on the infrared light.

[0011] In some embodiments of the present invention, a control unit is further included, which controls the backscanning element in the backscanning laser rangefinder to remain relatively stationary relative to the target based on the ranging information.

[0012] A second aspect of the present invention provides a high data rate panoramic infrared search and detection method, comprising: a servo rotation mechanism, a beam splitter, a backscanning laser rangefinder, an optical mirror, an avalanche diode infrared sensor, and a comprehensive information processing unit. The servo rotation mechanism transmits laser and infrared light to the infrared laser beam splitter through azimuth scanning; the beam splitter receives the infrared light transmitted by the servo rotation mechanism and reflects the laser emitted by the backscanning laser rangefinder back to the servo rotation mechanism; the backscanning laser rangefinder acquires the ranging information of each target during the azimuth scanning process through multi-pulse laser; the optical mirror receives the infrared light transmitted by the beam splitter and reflects the infrared light totally back to the avalanche diode infrared sensor; the avalanche diode infrared sensor outputs multiple frames of images at a preset frequency based on the received infrared light; and the comprehensive information processing unit stitches the multiple frames of images based on the ranging information of each target to obtain an infrared panoramic image with a frequency higher than 5Hz.

[0013] A third aspect of the present invention provides an electronic device comprising: one or more processors; and a storage device for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the high data rate panoramic infrared search and detection method provided in the second aspect of the present invention.

[0014] In a fourth aspect, the present invention provides a computer-readable medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the high data rate panoramic infrared search and detection method provided in the second aspect of the present invention.

[0015] The beneficial effects of this invention are: 1. A silicon carbide two-dimensional scanning mirror replaces the traditional mechanical frame structure, enabling lightweight, large-area 360° panoramic imaging; 2. The HgCdTe APD detector replaces the traditional infrared focal plane detector, with short integration time and high output frame rate, enabling infrared search and detection with high target data rate; 3. The laser ranging pulse laser operates in "pulse cluster" mode, utilizing a multi-pulse ranging mechanism to reduce false alarms in laser ranging under dynamic conditions; 4. Combining infrared passive imaging with laser ranging technology eliminates the need for switching between search and tracking modes. Utilizing laser ranging for precise control, target distance information is acquired simultaneously with 360° panoramic imaging, improving search and tracking efficiency. 5. The system is low in cost, simple to control, and has a high data rate, and can be widely used in areas such as regional surveillance, airborne ground detection, and long-range reconnaissance and monitoring. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of a high data rate panoramic infrared search and detection system in some embodiments of the present invention; Figure 2 This is a schematic diagram of the structure of a reverse-scanning laser ranging sensor in some embodiments of the present invention; Figure 3 This is a schematic diagram of the data processing flow of a high data rate panoramic infrared search and detection system in some embodiments of the present invention; Figure 4 This is a schematic diagram of the pulsed laser operating mode in some embodiments of the present invention; Figure 5 This is a schematic diagram illustrating the infrared strip splicing effect in some embodiments of the present invention; Figure 6 This is a schematic diagram of the structure of a road network data range minimization device for maintaining the electronic horizon in some embodiments of the present invention; Figure 7 This is a schematic diagram of the structure of an electronic device in some embodiments of the present invention.

[0017] Figure label: 1. Servo rotation mechanism; 11. Optical protection window; 12. Two-dimensional scanning mirror; 13. Orientation servo motor; 2. Spectroscopic element; 3. Back-scanning laser rangefinder; 31. Laser reflector; 32. Laser receiving optical system; 33. First back-scanning element; 35. Second back-scanning element; 36. Pulsed laser; 4. Optical mirror; 5. Avalanche infrared sensor. Detailed Implementation

[0018] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0019] refer to Figure 1As shown in Figure 3, in a first aspect of the present invention, a high data rate panoramic infrared search and detection system is provided, comprising: a servo rotation mechanism 1, used to transmit laser and infrared light to an infrared laser beam splitter 2 through azimuth scanning; the beam splitter 2, used to receive the infrared light transmitted by the servo rotation mechanism 1 and reflect the laser emitted by a back-scanning laser rangefinder 3 back to the servo rotation mechanism 1; the back-scanning laser rangefinder 3, used to acquire the ranging information of each target during the azimuth scanning process through multi-pulse laser; an optical reflector 4, used to receive the infrared light transmitted from the beam splitter 2 and to totally reflect the infrared light to an avalanche diode infrared sensor; an avalanche diode infrared sensor 5, used to output multiple frames of images at a preset frequency based on the received infrared light; and a comprehensive information processing unit, used to stitch the multiple frames of images based on the ranging information of each target to obtain an infrared panoramic image higher than 5Hz. The laser rangefinder, infrared, and other sensors are installed at the bottom of the system, receiving external infrared radiation and laser ranging through a lens-guided light method, and do not rotate with the servo rotation mechanism.

[0020] In some embodiments of the present invention, the servo rotation mechanism 1 includes: an optical protection window 11 for transmitting laser and infrared light to the infrared laser beam splitter 2; a two-dimensional scanning mirror 12 for reflecting the infrared light from the optical protection window 11 to the reverse-scanning laser rangefinder 3 and reflecting the multi-pulse laser from the reverse-scanning laser rangefinder 3 back to the optical protection window 11; and an azimuth servo motor 13 for driving the optical protection window 11 and the silicon carbide two-dimensional scanning mirror 12 to perform azimuth rotation.

[0021] Specifically, the optical protection window transmits infrared and laser wavelengths. Driven by an azimuth servo motor, the servo rotation mechanism achieves 360° azimuth rotation for panoramic imaging. The servo rotation mechanism only rotates the optical protection window 11 and the two-dimensional scanning mirror 12; the laser rangefinder and infrared sensors are mounted at the bottom of the system, receiving external infrared radiation and laser rangefinders through lens guidance, and do not rotate with the servo rotation mechanism.

[0022] Furthermore, the main structure of the two-dimensional scanning mirror 12 is made of silicon carbide to achieve a lightweight and high-precision design. The two-dimensional scanning mirror 12 can reflect infrared radiation and ranging laser light, and its pitch can be controlled by a control unit, achieving a target servo tracking accuracy of less than 100 rads.

[0023] Because the head rotational inertia of the azimuth servo motor 13 is small, a small torque azimuth servo motor can be used, which can further reduce the size and weight of the entire system, increase the azimuth servo rotation speed, and improve the target output data rate.

[0024] In some embodiments of the present invention, the infrared laser beam splitter 2 is coated with a semi-transparent and semi-reflective film, which reflects the laser band and transmits the infrared band.

[0025] refer to Figure 2 In some embodiments of the present invention, the back-scanning laser ranging sensor 3 includes: a pulsed laser for emitting multiple first pulsed laser beams; a back-scanning element for scanning the multiple first pulsed laser beams on a laser reflector 31 and scanning the multiple second pulsed laser beams to a laser receiving avalanche diode; Laser reflector 31 is used to reflect multiple first pulse laser beams to beam splitter 2 and to reflect multiple second pulse laser beams returned from beam splitter 2 to laser receiving optical system 32; laser receiving optical system 32 is used to receive multiple second pulse laser beams returned from laser reflector 31; laser receiving avalanche diode is used to convert multiple second pulse laser beams into electrical signals.

[0026] Specifically, the system comprises a laser receiving optical system 32, a first backscanning element 33 and a second backscanning element 35, a laser receiving APD 34, and a pulsed laser 36. The pulsed laser 36 can emit high-energy, high-peak-power pulsed laser light with wavelengths selectable from 1.06 μm, 1.5X μm, or 1.6X μm. The laser receiving APD 34 can be a Si or InGaAs laser detector. The first backscanning element 33 and the second backscanning element 35 are used for laser ranging of dynamic targets during azimuth scanning. Optionally, both the first backscanning element 33 and the second backscanning element 35 can be implemented using a fast-reflecting mirror (FSM) or a two-dimensional high-precision galvanometer, with an accuracy below 50 μrad.

[0027] In some embodiments of the present invention, the avalanche diode infrared sensor includes: an infrared optical system for receiving infrared light reflected by an optical mirror 4; and an infrared detector for outputting multiple frames of images at a preset frequency based on the infrared light.

[0028] Specifically, the optical reflector 4 is coated with an infrared reflective film, which can totally reflect the infrared band.

[0029] In some embodiments of the present invention, a control unit is further included, which controls the backscanning element in the backscanning laser rangefinder 3 to remain relatively stationary with respect to the target based on the ranging information.

[0030] In some embodiments of the present invention, the avalanche infrared sensor 5 consists of an infrared optical system 51 and an infrared detector 52. The infrared detector is a mid-wave infrared detector with HgCdTe APD, which has high gain, short integration time (less than 20 microseconds), and imaging frame rate of several hundred or even thousands of Hz.

[0031] The HgCdTe APD infrared sensor achieves a frame rate of 1000Hz. The azimuth servo motor drives the servo rotation mechanism at a rotation speed of 1800° / s (5 revolutions / s), resulting in 200 frames per 360° area. Each frame occupies an azimuth field of view of 360 / 200 = 1.8°. The target surface of the HgCdTe APD detector is 640×512 pixels, with a pixel size of 15µm, resulting in a focal length of approximately 300mm. At this point, the panoramic imaging target data output rate reaches 5Hz. Due to the use of a lightweight servo rotation mechanism, the azimuth servo motor's rotation speed is increased to 3600° / s (10 revolutions / s), resulting in 100 frames per 360° area. Each frame occupies an azimuth field of view of 360 / 100 = 3.6°. With the target surface and pixel size of the HgCdTe APD detector remaining unchanged, the focal length is approximately 150mm, achieving a panoramic imaging target data output rate of 10Hz.

[0032] refer to Figure 3 The system demonstrates how the integrated control unit maintains a stable pitch angle for the silicon carbide two-dimensional scanning mirror, while simultaneously controlling the azimuth servo motor to drive the servo rotation mechanism for 360° panoramic imaging scanning at speeds exceeding 1800° / s. Infrared radiation from the target and background passes through an optical protection window and converges onto the HgCdTe APD infrared sensor. Image data output from the infrared sensor at a frame rate of thousands of Hz is acquired by the data acquisition unit and then sent to the integrated information processing unit for image stitching, forming a 360° infrared panoramic image. Simultaneously, target extraction and correlation are performed on the image data, outputting the target's trajectory data. The panoramic imaging target data rate can reach 5Hz or even higher than 10Hz.

[0033] refer to Figure 4 and Figure 5 The integrated information processing unit detects the azimuth and elevation information of the threat target. The integrated control unit, based on the high data rate of the target's two-dimensional information and the target's motion offset, calculates the deflection angle and controls the backscanning element of the laser rangefinder sensor with backscan to reach the designated position. Simultaneously, the azimuth axis of the backscanning element is set to enter synchronous backscan mode, maintaining the target's relative stillness. A laser is emitted for active ranging, acquiring the target's distance information under dynamic scanning conditions and outputting the target's three-dimensional coordinates.

[0034] Because the servo rotation mechanism has a relatively high azimuth rotation speed of 1800° / s, the dwell time of each image frame (each frame occupies an azimuth field of view of 1.8°) is 1ms. With such a short dwell time, to improve the accuracy of target detection under dynamic conditions, the laser rangefinder employs a multi-pulse ranging mechanism. For example... Figure 4As shown, the pulsed laser operates in a "pulse cluster" mode, emitting multiple laser pulses within the 1ms dwell time of a single frame image. This enhances the reflected echoes from targets at the same location through correlation processing, reducing false alarms in laser ranging and enabling the acquisition of target distance information under dynamic scanning conditions. Through precise control of the backscanning elements, the output rate of multi-target 3D information data can reach 5Hz or even higher than 10Hz.

[0035] Understandably, the high data rate panoramic infrared search and detection system integrates lightweight servo rotation mechanisms, HgCdTe APD infrared imaging, multi-pulse laser ranging, and other technologies to achieve rapid acquisition of three-dimensional information of multiple targets over a wide range. This further improves the imaging, detection, and tracking capabilities of targets under 360° panoramic imaging conditions. The target data output rate is 5 to 10 times higher than that of traditional panoramic imaging systems, effectively enhancing the search and detection efficiency of panoramic optoelectronic systems. It can be widely used in areas such as regional surveillance, airborne ground detection, and long-range reconnaissance and monitoring.

[0036] Example 2 refer to Figure 6 A second aspect of the present invention provides a high data rate panoramic infrared search and detection method, comprising a servo rotation mechanism, a beam splitter, a back-scanning laser rangefinder, an optical mirror, an avalanche diode infrared sensor, and a comprehensive information processing unit. The steps include: S100. The servo rotation mechanism transmits laser and infrared light to the infrared laser beam splitter through azimuth scanning; S200. The beam splitter receives the infrared light transmitted by the servo rotation mechanism and reflects the laser emitted by the back-scanning laser rangefinder back to the servo rotation mechanism; S300. The back-scanning laser rangefinder acquires the ranging information of each target during the azimuth scanning process using multi-pulse laser; S400. The optical mirror receives the infrared light transmitted by the beam splitter and totally reflects the infrared light to the avalanche diode infrared sensor; S500. The avalanche diode infrared sensor outputs multiple frames of images at a preset frequency based on the received infrared light; S600. The comprehensive information processing unit stitches the multiple frames of images based on the ranging information of each target to obtain an infrared panoramic image with a frequency higher than 5Hz.

[0037] In order to obtain a high data rate panoramic image of the target, some embodiments of the present invention further include: controlling the backscanning element in the backscanning laser rangefinder to remain relatively stationary with respect to the target based on the ranging information of each target.

[0038] Example 3 refer to Figure 7A third aspect of the present invention provides an electronic device comprising: one or more processors; and a storage device for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the method of the second aspect of the present invention.

[0039] Electronic device 500 may include a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 501, which can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 502 or a program loaded from storage device 508 into random access memory (RAM) 503. The RAM 503 also stores various programs and data required for the operation of electronic device 500. The processing unit 501, ROM 502, and RAM 503 are interconnected via bus 504. An input / output (I / O) interface 505 is also connected to bus 504.

[0040] Typically, the following devices can be connected to I / O interface 505: input devices 506 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 507 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 508 including, for example, hard disks; and communication devices 509. Communication device 509 allows electronic device 500 to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 7 An electronic device 500 with various devices is shown; however, it should be understood that it is not required to implement or possess all of the devices shown. More or fewer devices may be implemented or possessed alternatively. Figure 7 Each box shown can represent a device or multiple devices as needed.

[0041] Specifically, according to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device 509, or installed from a storage device 508, or installed from a ROM 502. When the computer program is executed by a processing device 501, it performs the functions defined in the methods of embodiments of this disclosure. It should be noted that the computer-readable medium described in embodiments of this disclosure can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In embodiments of this disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in connection with an instruction execution system, apparatus, or device. In embodiments of this disclosure, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0042] The aforementioned computer-readable medium may be included in the aforementioned electronic device; or it may exist independently and not assembled into the electronic device. The aforementioned computer-readable medium carries one or more computer programs, which, when executed by the electronic device, cause the electronic device to: Computer program code for performing the operations of embodiments of this disclosure can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages—such as Java, Smalltalk, C++, and Python—and conventional procedural programming languages—such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0043] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high data rate panoramic infrared search and detection system, characterized in that, include: A servo rotation mechanism is used to transmit laser and infrared light to an infrared laser beam splitter through azimuth scanning. The beam splitter is used to receive infrared light transmitted by the servo rotation mechanism and reflect the laser emitted by the back-scanning laser rangefinder back to the servo rotation mechanism. A reverse-scan laser rangefinder is used to acquire ranging information for each target during azimuth scanning using multi-pulse laser. An optical reflector is used to receive infrared light from a beam splitter and to totally reflect the infrared light to an avalanche diode infrared sensor. Avalanche diode infrared sensor, used to output multiple frames of images at a preset frequency based on received infrared light; The integrated information processing unit is used to stitch together the multiple frames of images based on the ranging information of each target to obtain an infrared panoramic image with a refresh rate higher than 5Hz.

2. The high data rate panoramic infrared search and detection system according to claim 1, characterized in that, The servo rotation mechanism includes: An optical protection window is used to transmit laser and infrared light to the infrared laser beam splitter. A two-dimensional scanning mirror is used to reflect the infrared light from the optical protection window to the reverse-scanning laser rangefinder, and to reflect the multi-pulse laser from the reverse-scanning laser rangefinder back to the optical protection window. An azimuth servo motor is used to drive the optical protection window and silicon carbide two-dimensional scanning reflection to perform azimuth rotation.

3. The high data rate panoramic infrared search and detection system according to claim 2, characterized in that, The main structure of the two-dimensional scanning mirror is made of silicon carbide.

4. The high data rate panoramic infrared search and detection system according to claim 1, characterized in that, The reverse-scan laser ranging sensor includes: A pulsed laser, used to emit multiple first pulses of laser light; The reverse scanning element is used to scan multiple first pulse laser beams on the laser reflector and to scan multiple second pulse laser beams onto the laser receiving avalanche diode. A laser reflector is used to reflect multiple first pulse laser beams to a beam splitter and to reflect multiple second pulse laser beams returned from the beam splitter to a laser receiving optical system. A laser receiving optical system for receiving multiple second-pulse laser beams reflected from a laser reflector; A laser receiving avalanche diode is used to convert multiple second-pulse laser beams into electrical signals.

5. The high data rate panoramic infrared search and detection system according to claim 1, characterized in that, The avalanche diode infrared sensor includes: An infrared optical system used to receive infrared light reflected by an optical mirror; An infrared detector is used to output multiple frames of images at a preset frequency based on the infrared light.

6. The high data rate panoramic infrared search and detection system according to claim 1, characterized in that, Also includes: The control unit is used to control the backscanning element in the backscanning laser rangefinder to remain relatively stationary relative to the target, based on the ranging information.

7. A high data rate panoramic infrared search and detection method, comprising: The servo rotation mechanism, beam splitter, back-scanning laser rangefinder, optical mirror, avalanche diode infrared sensor, and integrated information processing unit are characterized in that... The servo rotation mechanism transmits laser and infrared light to the infrared laser beam splitter through azimuth scanning. The beam splitter receives the infrared light transmitted by the servo rotation mechanism and reflects the laser emitted by the back-scanning laser rangefinder back to the servo rotation mechanism. The reverse-scan laser rangefinder uses multi-pulse laser to acquire ranging information for each target during the azimuth scanning process; An optical mirror receives infrared light from a beam splitter and reflects the infrared light back to an avalanche diode infrared sensor. The avalanche diode infrared sensor outputs multiple frames of images at a preset frequency based on the received infrared light. The integrated information processing unit stitches together the multiple frames of images based on the ranging information of each target to obtain an infrared panoramic image with a refresh rate higher than 5Hz.

8. The high data rate panoramic infrared search and detection method according to claim 7, characterized in that, Also includes: Based on the ranging information of each target, the backscanning element in the backscanning laser rangefinder is controlled to remain relatively stationary with respect to the target.

9. An electronic device, comprising: one or more processors; A storage device for storing one or more programs, which, when executed by one or more processors, cause the one or more processors to implement the high data rate panoramic infrared search and detection method as described in any one of claims 7 to 8.

10. A computer-readable medium having a computer program stored thereon, wherein, When the computer program is executed by the processor, it implements the high data rate panoramic infrared search and detection method as described in any one of claims 7 to 8.

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