Long-distance wide-area high-resolution single-photon radar imaging method

Abstract

The invention discloses a long-distance wide-area high-resolution single-photon radar imaging method. The method comprises the following steps: S1, constructing a system; s2, the distance is detected, and the long-distance wide-area high-resolution problem is solved; s3, receiving the data, and solving the problems of data processing and storage; s4, detecting an imaging signal, and solving the problems of signal attenuation and interference; s5, after the problem is solved, testing work is carried out through single-photon radar imaging; s6, after the test work is completed, detecting and patching problems again; and S7, setting a problem triggering and vacancy supplementing system, and timely supplementing the problem when the problem occurs in the single-photon radar imaging. The method has the beneficial effects that clutter interference can be effectively reduced by arranging and removing clutter devices generated in the single-photon radar, and software and hardware configuration in an internal system is optimized, so that the reliability of the single-photon radar imaging is improved, and the reliability of the single-photon radar imaging is improved. Cooperative operation among all components in the system is ensured, so that the problem of long distance and wide area during single photon radar imaging is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of single-photon radar, and in particular to a long-distance, wide-area, high-resolution single-photon radar imaging method. Background Art

[0002] Single-photon radar is a lidar system based on single-photon detection technology. Unlike traditional multi-photon lidar, single-photon radar can detect with the sensitivity of a single photon, providing higher efficiency and lower power levels, and is suitable for various complex environments.

[0003] In the existing technical solutions, there are many technical problems in long-range, wide-area, high-resolution single-photon radar imaging. Single-photon radar faces major technical challenges in achieving long-range, wide-area and high-resolution. These include the contradiction between long-range, wide-area and high-resolution, which cannot be achieved at the same time. The amount of data that needs to be processed is huge, which places extremely high demands on large-scale data processing and storage capabilities. At the same time, signal attenuation and interference are also important issues during long-range imaging. Summary of the invention

[0004] The object of the present invention is to provide a long-distance, wide-area, high-resolution single-photon radar imaging method to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a long-distance, wide-area, high-resolution single-photon radar imaging method, comprising the following contents:

[0006] S1. Build the system;

[0007] S2, detection distance, solve the problem of long-distance wide-area high-resolution;

[0008] S3, receiving data and solving data processing and storage problems;

[0009] S4, detect imaging signals and solve signal attenuation and interference problems;

[0010] S5. After the problem is solved, test work is performed using single photon radar imaging;

[0011] S6. After completing the testing work, the problem is tested again with patches;

[0012] S7. Set the problem triggering gap filling system to fill the gap in time when problems occur in single-photon radar imaging.

[0013] Preferably, the step S1 includes the following:

[0014] S11: Use high-efficiency optical collection and detection devices to collect and detect weak echo signals, and then improve the signal-to-noise ratio;

[0015] S12: Build a long-distance single-photon large-field-of-view scanning imaging system, and control the array single-photon detector by setting the motion mode of a two-dimensional dual-axis turntable to scan the panoramic pixel points of the target in a raster-type connection scanning manner, thereby obtaining large-field-of-view panoramic single-photon detection data of the target object;

[0016] S13: A super-oscillation unit is introduced into the imaging system, including an oscillation element and a focusing component. The super-oscillation element modulates the pulsed laser to form a super-oscillation light spot, which is projected onto the target to be measured and generates an echo. The focusing component receives the echo and transmits it to the echo receiving unit. Finally, the received echo signal is converted into an electrical signal through the photon detection unit to form high-resolution imaging.

[0017] Preferably, step S2 includes the following:

[0018] S21: Detecting the distance of single-photon radar electric signal transmission or reception by electric signal distance detection equipment;

[0019] S32: Sort out and remove the devices that generate clutter in the single-photon radar to reduce the interference of clutter;

[0020] S23: Optimize the software and hardware configuration within the internal system to ensure the coordinated operation of various components within the system.

[0021] Preferably, step S3 includes the following:

[0022] S31: Receive data information fed back by electrical signals, perform preprocessing on the received data, perform data cleaning, integration and conversion operations, and integrate the data through outlier detection and missing value filling technologies;

[0023] S32: Then a distributed storage system and a NOSQL database are used to perform storage management;

[0024] S33: In the processing and analysis stage, use efficient data processing and analysis tools and algorithms;

[0025] S34; Finally, adopt real-time or near real-time data processing requirements, integrate real-time data stream processing tools such as KAFKA and Kinesis, and realize real-time data collection, processing, analysis and storage.

[0026] Preferably, step S4 includes the following:

[0027] S41: When in the process of long-distance transmission, a signal amplifier is installed in the transmission line to amplify the signal to maintain stable transmission and shield clutter interference;

[0028] S42: Use high-quality cable optical fiber to reduce signal loss and improve anti-interference ability;

[0029] S43: Remove redundant boards and data cables from the single-photon radar to reduce clutter emission sources;

[0030] S44: Choose appropriate digital transmission cables or equipment to reduce signal attenuation;

[0031] S45: Use wireless monitoring bridge or wireless access point to achieve ultra-long-distance monitoring through wireless signal transmission and ensure the stability of wireless transmission technology.

[0032] Preferably, step S5 includes the following:

[0033] S51: Through the static calibration method, determine a stable calibration plate with known position and direction, place the single-photon radar in front of the calibration plate, and record the scanning data set of the single-photon radar and the precise position of the calibration plate. By processing and analyzing the scanning data, the internal and external parameters of the single-photon radar can be calculated;

[0034] S52: Through the dynamic calibration method, a moving object is used as a reference for calibration. By controlling the reference object to move along a known trajectory, and recording the scanning data of the single-photon radar and the precise position of the reference object, the internal and external parameters of the single-photon radar are calculated.

[0035] Preferably, step S6 includes the following:

[0036] S61: After solving the existing problems of single photon radar imaging, perform imaging test on single photon radar;

[0037] S62: Evaluation based on the test results of single photon radar imaging;

[0038] S63: If there are defects in the test, review and improve the test process and methods to ensure that the single photon radar imaging test is more comprehensive and accurate;

[0039] S64: Use automated testing tools to improve the accuracy and efficiency of single photon radar imaging testing and detect defects through automated testing.

[0040] Preferably, step S7 includes the following:

[0041] S71: trigger the gap filling system for the internal setting problem defect of the single photon radar. When a problem occurs during the operation of the single photon radar, the gap filling system is triggered to run;

[0042] S72: Use the gap filling system to promptly resolve problems that arise during single-photon radar imaging to prevent them from affecting the efficiency of single-photon radar imaging.

[0043] Compared with the prior art, the beneficial effects of the present invention are as follows: by sorting out and removing the devices that generate clutter in the single-photon radar, the interference of clutter can be effectively reduced, and the software and hardware configuration in the internal system can be optimized to ensure the coordinated operation of the components in the system, so as to solve the long-distance and wide-area problems that occur when the single-photon radar is imaged; by preprocessing the electrical signals received by the single-photon radar, and using a distributed storage system and a NOSQL database to cooperate for storage management, using efficient data processing and analysis tools and algorithms, and integrating real-time data stream processing tools such as KAFKA and Kinesis, real-time data collection, processing, analysis and storage are realized, thereby solving the problem of excessively large data processing volume; by using an amplifier, the signal can be amplified to maintain stable transmission and shield clutter interference; by using high-quality cable optical fibers, signal loss can be reduced and anti-interference ability can be improved; by selecting suitable digital transmission cables or equipment, signal attenuation can be reduced; by using a wireless monitoring bridge or a wireless access point, ultra-long-distance monitoring can be achieved through wireless signal transmission, and the stability of wireless transmission technology can be guaranteed, thereby solving the problem of signal attenuation and interference during long-distance imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1 The present invention provides a technical solution: a long-distance, wide-area, high-resolution single-photon radar imaging method, comprising the following contents:

[0047] S1. Build the system;

[0048] S2, detection distance, solve the problem of long-distance wide-area high-resolution;

[0049] S3, receiving data and solving data processing and storage problems;

[0050] S4, detect imaging signals and solve signal attenuation and interference problems;

[0051] S5. After the problem is solved, test work is performed using single photon radar imaging;

[0052] S6. After completing the testing work, the problem is tested again with patches;

[0053] S7. Set the problem triggering gap filling system to fill the gap in time when problems occur in single-photon radar imaging.

[0054] Wherein, the step S1 includes the following:

[0055] S11: Use high-efficiency optical collection and detection devices to collect and detect weak echo signals, and then improve the signal-to-noise ratio;

[0056] S12: Build a long-distance single-photon large-field-of-view scanning imaging system, and control the array single-photon detector by setting the motion mode of a two-dimensional dual-axis turntable to scan the panoramic pixel points of the target in a raster-type connection scanning manner, thereby obtaining large-field-of-view panoramic single-photon detection data of the target object;

[0057] S13: A super-oscillation unit is introduced into the imaging system, including an oscillation element and a focusing component. The super-oscillation element modulates the pulsed laser to form a super-oscillation light spot, which is projected onto the target to be measured and generates an echo. The focusing component receives the echo and transmits it to the echo receiving unit. Finally, the received echo signal is converted into an electrical signal through the photon detection unit to form high-resolution imaging.

[0058] Wherein, the step S2 includes the following:

[0059] S21: Detecting the distance of single-photon radar electric signal transmission or reception by electric signal distance detection equipment;

[0060] S32: Sort out and remove the devices that generate clutter in the single-photon radar to reduce the interference of clutter;

[0061] S23: Optimize the software and hardware configuration within the internal system to ensure the coordinated operation of various components within the system.

[0062] Wherein, the step S3 includes the following:

[0063] S31: Receive data information fed back by electrical signals, perform preprocessing on the received data, perform data cleaning, integration and conversion operations, and integrate the data through outlier detection and missing value filling technologies;

[0064] S32: Then a distributed storage system and a NOSQL database are used to perform storage management;

[0065] S33: In the processing and analysis stage, use efficient data processing and analysis tools and algorithms;

[0066] S34; Finally, adopt real-time or near real-time data processing requirements, integrate real-time data stream processing tools such as KAFKA and Kinesis, and realize real-time data collection, processing, analysis and storage.

[0067] Wherein, the step S4 includes the following:

[0068] S41: When in the process of long-distance transmission, a signal amplifier is installed in the transmission line to amplify the signal to maintain stable transmission and shield clutter interference;

[0069] S42: Use high-quality cable optical fiber to reduce signal loss and improve anti-interference ability;

[0070] S43: Remove redundant boards and data cables from the single-photon radar to reduce clutter emission sources;

[0071] S44: Choose appropriate digital transmission cables or equipment to reduce signal attenuation;

[0072] S45: Use wireless monitoring bridge or wireless access point to achieve ultra-long-distance monitoring through wireless signal transmission and ensure the stability of wireless transmission technology.

[0073] Wherein, the step S5 includes the following:

[0074] S51: Through the static calibration method, determine a stable calibration plate with known position and direction, place the single-photon radar in front of the calibration plate, and record the scanning data set of the single-photon radar and the precise position of the calibration plate. By processing and analyzing the scanning data, the internal and external parameters of the single-photon radar can be calculated;

[0075] S52: Through the dynamic calibration method, a moving object is used as a reference for calibration. By controlling the reference object to move along a known trajectory, and recording the scanning data of the single-photon radar and the precise position of the reference object, the internal and external parameters of the single-photon radar are calculated.

[0076] Wherein, the step S6 includes the following:

[0077] S61: After solving the existing problems of single photon radar imaging, perform imaging test on single photon radar;

[0078] S62: Evaluation based on the test results of single photon radar imaging;

[0079] S63: If there are defects in the test, review and improve the test process and methods to ensure that the single photon radar imaging test is more comprehensive and accurate;

[0080] S64: Use automated testing tools to improve the accuracy and efficiency of single photon radar imaging testing and detect defects through automated testing.

[0081] Wherein, the step S7 includes the following:

[0082] S71: trigger the gap filling system for the internal setting problem defect of the single photon radar. When a problem occurs during the operation of the single photon radar, the gap filling system is triggered to run;

[0083] S72: Use the gap filling system to promptly resolve problems that arise during single-photon radar imaging to prevent them from affecting the efficiency of single-photon radar imaging.

[0084] Specifically, when using the present invention, the first step is to use high-efficiency optical collection and detection devices to collect and detect weak echo signals, and then improve the signal-to-noise ratio to build a long-distance single-photon large-field-of-view scanning imaging system, and by setting a two-dimensional dual-axis turntable motion mode control array single-photon detector, the panoramic pixel points of the target are scanned in a grating connection scanning manner, thereby obtaining a large-field panoramic single-photon detection data of the target object, and introducing a super-oscillation unit into the imaging system, including an oscillation element and a focusing component. The super-oscillation element modulates the pulsed laser to form a super-oscillation light spot that is projected onto the target to be measured and generates an echo. The focusing component receives the echo and transmits it to the echo receiving unit, and finally the received echo signal is converted into an electrical signal through the photon detection unit, so that The first step is to form high-resolution imaging. The second step is to detect the distance of the single-photon radar electrical signal emission or reception through the electrical signal distance detection equipment, sort out and remove the devices that generate clutter in the single-photon radar, reduce the interference of clutter, optimize the software and hardware configuration in the internal system, and ensure the coordinated operation of various components in the system. The third step is to receive the data information fed back by the electrical signal, pre-process the received data, clean the data, integrate and convert it, and integrate the data through outlier detection and missing value filling technology, and then use distributed storage system and NOSQL database to cooperate for storage management. In the processing and analysis stage, efficient data processing and analysis tools and algorithms are used, and finally real-time or near real-time data is used. According to the processing requirements, real-time data stream processing tools such as KAFKA and Kinesis are integrated to realize real-time data collection, processing, analysis and storage. In the fourth step, when in the long-distance transmission process, a signal amplifier is installed in the transmission line to amplify the signal to maintain stable transmission, shield clutter interference, use high-quality cable optical fiber, reduce signal loss, improve anti-interference ability, remove unnecessary boards and data cables in the single-photon radar, reduce clutter emission sources, select appropriate digital transmission cables or equipment, reduce signal attenuation, use wireless monitoring bridges or wireless access points, and realize ultra-long-distance monitoring through wireless signal transmission to ensure the stability of wireless transmission technology. In the fifth step, a stable calibration board with known position and direction is determined through the static calibration method, and the single The photon radar is placed in front of the calibration board, and the scanning data set of the single-photon radar and the precise position of the calibration board are recorded. By processing and analyzing the scanning data, the internal and external parameters of the single-photon radar can be calculated. Through the dynamic calibration method, a moving object is used as a reference for calibration. By controlling the reference object to move on a known trajectory, and recording the scanning data of the single-photon radar and the precise position of the reference object, the internal and external parameters of the single-photon radar are calculated. In the sixth step, after solving the problems existing in the single-photon radar imaging, the single-photon radar is imaged and tested. The test results of the single-photon radar imaging are evaluated. If there are defects in the test, the test process and methods are reviewed and improved to ensure that the single-photon radar imaging test is more comprehensive and accurate.Use automated testing tools to improve the accuracy and efficiency of single-photon radar imaging tests, and detect defects through automated testing. In the seventh step, the internal setting defects of the single-photon radar trigger the gap filling system. When problems occur during the operation of the single-photon radar, the gap filling system is triggered to run. The gap filling system can promptly solve the problems that occur during the imaging of the single-photon radar to prevent the imaging efficiency of the single-photon radar from being affected.

[0085] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A long-distance, wide-area, high-resolution single-photon radar imaging method, characterized in that: Includes the following: S1. Build the system; S2, detection distance, solve the problem of long-distance wide-area high-resolution; S3, receiving data and solving data processing and storage problems; S4, detect imaging signals and solve signal attenuation and interference problems; S5. After the problem is solved, test work is performed using single photon radar imaging; S6. After completing the testing work, the problem is tested again with patches; S7. Set the problem triggering gap filling system to fill the gap in time when problems occur in single-photon radar imaging.

2. The long-distance, wide-area, high-resolution single-photon radar imaging method according to claim 1, characterized in that: The step S1 comprises the following: S11: Use high-efficiency optical collection and detection devices to collect and detect weak echo signals, and then improve the signal-to-noise ratio; S12: Build a long-distance single-photon large-field-of-view scanning imaging system, and control the array single-photon detector by setting the motion mode of a two-dimensional dual-axis turntable to scan the panoramic pixel points of the target in a raster-type connection scanning manner, thereby obtaining large-field-of-view panoramic single-photon detection data of the target object; S13: A super-oscillation unit is introduced into the imaging system, including an oscillation element and a focusing component. The super-oscillation element modulates the pulsed laser to form a super-oscillation light spot, which is projected onto the target to be measured and generates an echo. The focusing component receives the echo and transmits it to the echo receiving unit. Finally, the received echo signal is converted into an electrical signal through the photon detection unit to form high-resolution imaging.

3. The long-distance, wide-area, high-resolution single-photon radar imaging method according to claim 1, characterized in that: The step S2 comprises the following: S21: Detecting the distance of single-photon radar electric signal transmission or reception by electric signal distance detection equipment; S32: Sort out and remove the devices that generate clutter in the single-photon radar to reduce the interference of clutter; S23: Optimize the software and hardware configuration within the internal system to ensure the coordinated operation of various components within the system.

4. The long-distance, wide-area, high-resolution single-photon radar imaging method according to claim 1, characterized in that: The step S3 comprises the following: S31: Receive data information fed back by electrical signals, perform preprocessing on the received data, perform data cleaning, integration and conversion operations, and integrate the data through outlier detection and missing value filling technologies; S32: Then a distributed storage system and a NOSQL database are used to perform storage management; S33: In the processing and analysis stage, use efficient data processing and analysis tools and algorithms; S34; Finally, adopt real-time or near real-time data processing requirements, integrate real-time data stream processing tools such as KAFKA and Kinesis, and realize real-time data collection, processing, analysis and storage.

5. The long-distance, wide-area, high-resolution single-photon radar imaging method according to claim 1, characterized in that: The step S4 includes the following: S41: When in the process of long-distance transmission, a signal amplifier is installed in the transmission line to amplify the signal to maintain stable transmission and shield clutter interference; S42: Use high-quality cable optical fiber to reduce signal loss and improve anti-interference ability; S43: Remove redundant boards and data cables from the single-photon radar to reduce clutter emission sources; S44: Choose appropriate digital transmission cables or equipment to reduce signal attenuation; S45: Use wireless monitoring bridge or wireless access point to achieve ultra-long-distance monitoring through wireless signal transmission and ensure the stability of wireless transmission technology.

6. The long-distance, wide-area, high-resolution single-photon radar imaging method according to claim 1, characterized in that: The step S5 comprises the following: S51: Through the static calibration method, determine a stable calibration plate with known position and direction, place the single-photon radar in front of the calibration plate, and record the scanning data set of the single-photon radar and the precise position of the calibration plate. By processing and analyzing the scanning data, the internal and external parameters of the single-photon radar can be calculated; S52: Through the dynamic calibration method, a moving object is used as a reference for calibration. By controlling the reference object to move along a known trajectory, and recording the scanning data of the single-photon radar and the precise position of the reference object, the internal and external parameters of the single-photon radar are calculated.

7. The long-distance, wide-area, high-resolution single-photon radar imaging method according to claim 6, characterized in that: The step S6 comprises the following: S61: After solving the existing problems of single photon radar imaging, perform imaging test on single photon radar; S62: Evaluation based on the test results of single photon radar imaging; S63: If there are defects in the test, review and improve the test process and methods to ensure that the single photon radar imaging test is more comprehensive and accurate; S64: Use automated testing tools to improve the accuracy and efficiency of single photon radar imaging testing and detect defects through automated testing.

8. The long-distance, wide-area, high-resolution single-photon radar imaging method according to claim 1, characterized in that: The step S7 comprises the following: S71: trigger the gap filling system for the internal setting problem defect of the single photon radar. When a problem occurs during the operation of the single photon radar, the gap filling system is triggered to run; S72: Use the gap filling system to promptly resolve problems that arise during single-photon radar imaging to prevent them from affecting the efficiency of single-photon radar imaging.

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