Ultra-long-distance near-infrared single-photon ranging radar system

Abstract

The invention discloses an ultra-long-distance near-infrared single-photon ranging radar system, which comprises a near-infrared single-photon ranging radar system, a transmitting module, a receiving module, a ranging module, a signal processing module, a measurement precision adjusting module, a sensitive processing module, an interference processing module and a technical enhancement module, the output end of the near-infrared single-photon ranging radar system is in one-way connection with the input ends of the transmitting module, the receiving module, the ranging module, the signal processing module, the measurement precision adjusting module, the sensitive processing module, the interference processing module and the technical enhancement module. The near-infrared single-photon ranging radar system has the beneficial effects that by adding the signal processing module, the signal of the near-infrared single-photon ranging radar system is enhanced, and the problem that the signal is too poor is solved.

Description

Technical Field

[0001] The invention relates to the technical field of near-infrared single-photon ranging radar, in particular to an ultra-long-range near-infrared single-photon ranging radar system. Background Art

[0002] Near-infrared single-photon ranging radar is a high-precision radar system that uses single photons to measure distance. It emits near-infrared light pulses and detects photons reflected from the target surface, and calculates the distance by measuring the flight time of the photons.

[0003] When in use, near-infrared single-photon ranging radar has problems such as decreased measurement accuracy, sensitivity to target reflectivity and environmental factors, interference, and technical challenges. The decreased measurement accuracy is due to the increase in ranging distance and the decrease in the number of received photons, which in turn leads to a decrease in measurement accuracy. The sensitivity to target reflectivity and environmental factors is because single-photon radar is very sensitive to target reflectivity and environmental factors. The interference is that during use, single photons are easily interfered by the outside world, resulting in inaccurate measurements. The technical challenges are atmospheric disturbances, scattering, background noise and other issues that affect technology upgrades. Summary of the invention

[0004] The purpose of the present invention is to provide an ultra-long-range near-infrared single-photon ranging radar system to solve the problems of decreased measurement accuracy, sensitivity to target reflectivity and environmental factors, interference and technical challenges in the near-infrared single-photon ranging radar proposed in the above-mentioned background technology when in use. The decreased measurement accuracy is due to the increase in ranging distance and the decrease in the number of received photons, which in turn leads to a decrease in measurement accuracy. The sensitivity to target reflectivity and environmental factors is because the single-photon radar is very sensitive to the reflectivity and environmental factors of the target. The interference is because during use, the single photon is easily interfered by the outside world, resulting in inaccurate measurement. The technical challenges are the problems of atmospheric disturbance, scattering, background noise and other problems that affect technology upgrading.

[0005] To achieve the above-mentioned object, the present invention provides the following technical scheme: an ultra-long-range near-infrared single-photon ranging radar system, comprising: a near-infrared single-photon ranging radar system, a transmitting module, a receiving module, a ranging module, a signal processing module, a measurement accuracy adjustment module, a sensitive processing module, an interference processing module, and a technology enhancement module, wherein the output end of the near-infrared single-photon ranging radar system is unidirectionally connected to the input end of the transmitting module, the receiving module, the ranging module, the signal processing module, the measurement accuracy adjustment module, the sensitive processing module, the interference processing module, and the technology enhancement module;

[0006] The signal processing module is used to enhance the signal of the near-infrared single-photon ranging radar system;

[0007] The measurement accuracy adjustment module is used to increase the photon receiving intensity while increasing the ranging distance, thereby receiving more photons and enhancing the ranging accuracy;

[0008] The sensitive processing module is used to adjust the reflectivity and the amount of photons when they occur;

[0009] The interference processing module is used to adjust the broadband, switch the frequency band and optimize the beam when interference problems occur;

[0010] The technology enhancement module is used to upgrade and enhance the internal technology when the near-infrared single-photon ranging radar system encounters external interference.

[0011] As a preferred solution of the present invention: the transmitting module is used to transmit electromagnetic waves through an antenna or other equipment.

[0012] As a preferred solution of the present invention: the receiving module is used to receive electromagnetic waves emitted by devices such as antennas.

[0013] As a preferred solution of the present invention: the distance measuring module is used to measure the distance of electromagnetic waves when transmitting and receiving electromagnetic waves.

[0014] As a preferred solution of the present invention: the signal processing module includes a signal amplification unit and a signal processing algorithm unit, and the output end of the signal processing module is unidirectionally connected to the input end of the signal amplification unit and the signal processing algorithm unit;

[0015] The signal amplification unit is used to reduce noise while amplifying the signal through a low noise amplifier, and to reduce noise interference by filtering and preprocessing the signal before it enters the main processing unit;

[0016] The signal processing algorithm unit is used to adjust the filtering parameters through signal algorithm processing to optimize the ratio of signal to noise.

[0017] As a preferred solution of the present invention: the measurement accuracy adjustment module includes a signal power unit, a signal optimization unit and an algorithm processing unit, and the output end of the measurement accuracy adjustment module is unidirectionally connected to the input end of the signal power unit, the signal optimization unit and the algorithm processing unit;

[0018] The signal power unit is used to reduce interference by enhancing the signal source power;

[0019] The signal optimization unit is used to optimize the signal by high-performance signal processing technology;

[0020] The algorithm processing unit is used to utilize machine learning, pattern recognition and multi-sensor data fusion technology to improve target recognition capability and overall system accuracy.

[0021] As a preferred solution of the present invention: the sensitive processing module includes a reflection adjustment unit and a photon increasing unit, and the output end of the sensitive processing module is unidirectionally connected to the input end of the reflection adjustment unit and the photon increasing unit;

[0022] The reflection adjustment unit is used to adjust the reflectivity by switching the reflection intensity of different materials;

[0023] The photon increasing unit is used to increase the photon receiving amount by enhancing the photon receiving intensity.

[0024] As a preferred solution of the present invention: the interference processing module includes a broadband adjustment unit, a frequency band switching unit and a beam optimization unit, and the output end of the interference processing module is unidirectionally connected to the input end of the broadband adjustment unit, the frequency band switching unit and the beam optimization unit;

[0025] The broadband adjustment unit is used to avoid or disperse interference signals by adjusting the distribution radar frequency;

[0026] The frequency band switching unit is used to enhance the ability to cope with airborne jamming equipment by combining and using radars of different frequency bands;

[0027] The beam optimization unit is used to optimize the beam intensity by adjusting the azimuth and elevation angles with high resolution.

[0028] As a preferred solution of the present invention: the technology enhancement module includes a distance fuzzy processing unit, a noise interference adjustment unit, a high-precision distance measurement unit and a time-space anti-correlation unit, and the output end of the technology enhancement module is unidirectionally connected to the input end of the distance fuzzy processing unit, the noise interference adjustment unit, the high-precision distance measurement unit and the time-space anti-correlation unit;

[0029] The distance fuzzy processing unit is used to improve the distance resolution capability by utilizing true random coding technology and chaotic light source;

[0030] The noise interference adjustment unit is used to improve the anti-interference capability by utilizing true random coding technology and chaotic light source;

[0031] The high-precision distance measurement unit is used to use a SPAD single-photon camera and time gating technology to finely move the time window to capture photons and improve the distance measurement accuracy;

[0032] The spatiotemporal anticorrelation unit is used to set a specific gating window and utilize the spatiotemporal anticorrelation of entangled photons to filter non-target light source signals.

[0033] Compared with the prior art, the invention has the following beneficial effects: by adding a signal processing module, the invention realizes enhanced processing of the signal of the near-infrared single-photon ranging radar system, thereby solving the problem of poor signal; by adding a measurement accuracy adjustment module, the invention realizes that while the ranging distance increases, the photon receiving intensity is improved, thereby receiving more photons, enhancing the ranging accuracy, and solving the problem that the number of received photons decreases due to the increase in the ranging distance, thereby causing the measurement accuracy to decrease; by adding a sensitive processing module, the invention realizes that the reflectivity and the amount of photons are adjusted when there is a problem that the sensitivity to the target reflectivity and environmental factors is that the single-photon radar is very sensitive to the target reflectivity and environmental factors; by adding an interference processing module, the invention realizes broadband adjustment, and switches the frequency band and optimizes the beam when interference problems occur, thereby solving the problem that interference is caused by the single photon being easily interfered by the outside world during use, resulting in inaccurate measurement; by adding a technology enhancement module, the invention realizes that the internal technology is upgraded and enhanced when the near-infrared single-photon ranging radar system is interfered by the outside world, thereby solving the problem that the technology is faced with challenges due to atmospheric disturbances, scattering, background noise and other problems, which affect the technology upgrade. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a system block diagram of the present invention. DETAILED DESCRIPTION

[0035] 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.

[0036] See also Figure 1 The present invention provides a technical solution: an ultra-long-range near-infrared single-photon ranging radar system, comprising: a near-infrared single-photon ranging radar system, a transmitting module, a receiving module, a ranging module, a signal processing module, a measurement accuracy adjustment module, a sensitive processing module, an interference processing module, and a technology enhancement module, wherein the output end of the near-infrared single-photon ranging radar system is unidirectionally connected to the input end of the transmitting module, the receiving module, the ranging module, the signal processing module, the measurement accuracy adjustment module, the sensitive processing module, the interference processing module, and the technology enhancement module;

[0037] The signal processing module is used to enhance the signal of the near-infrared single-photon ranging radar system;

[0038] The measurement accuracy adjustment module is used to increase the photon receiving intensity while increasing the ranging distance, thereby receiving more photons and enhancing the ranging accuracy;

[0039] The sensitive processing module is used to adjust the reflectivity and the amount of photons when they occur;

[0040] The interference processing module is used to adjust the broadband, switch the frequency band and optimize the beam when interference problems occur;

[0041] The technology enhancement module is used to upgrade and enhance the internal technology when the near-infrared single-photon ranging radar system encounters external interference.

[0042] The transmitting module is used to transmit electromagnetic waves through an antenna or other equipment.

[0043] The receiving module is used to receive electromagnetic waves emitted by an antenna or other device.

[0044] The distance measuring module is used to measure the distance of electromagnetic waves when transmitting and receiving electromagnetic waves.

[0045] Wherein, the signal processing module comprises a signal amplification unit and a signal processing algorithm unit, and the output end of the signal processing module is unidirectionally connected to the input end of the signal amplification unit and the signal processing algorithm unit;

[0046] The signal amplification unit is used to reduce noise while amplifying the signal through a low noise amplifier, and to reduce noise interference by filtering and preprocessing the signal before it enters the main processing unit;

[0047] The signal processing algorithm unit is used to adjust the filtering parameters through signal algorithm processing to optimize the ratio of signal to noise.

[0048] Wherein, the measurement accuracy adjustment module includes a signal power unit, a signal optimization unit and an algorithm processing unit, and the output end of the measurement accuracy adjustment module is unidirectionally connected to the input end of the signal power unit, the signal optimization unit and the algorithm processing unit;

[0049] The signal power unit is used to reduce interference by enhancing the signal source power;

[0050] The signal optimization unit is used to optimize the signal by high-performance signal processing technology;

[0051] The algorithm processing unit is used to utilize machine learning, pattern recognition and multi-sensor data fusion technology to improve target recognition capability and overall system accuracy.

[0052] Wherein, the sensitive processing module includes a reflection adjustment unit and a photon increasing unit, and the output end of the sensitive processing module is unidirectionally connected to the input end of the reflection adjustment unit and the photon increasing unit;

[0053] The reflection adjustment unit is used to adjust the reflectivity by switching the reflection intensity of different materials;

[0054] The photon increasing unit is used to increase the photon receiving amount by enhancing the photon receiving intensity.

[0055] The interference processing module includes a broadband adjustment unit, a frequency band switching unit and a beam optimization unit, and the output end of the interference processing module is unidirectionally connected to the input end of the broadband adjustment unit, the frequency band switching unit and the beam optimization unit;

[0056] The broadband adjustment unit is used to avoid or disperse interference signals by adjusting the distribution radar frequency;

[0057] The frequency band switching unit is used to enhance the ability to cope with airborne jamming equipment by combining and using radars of different frequency bands;

[0058] The beam optimization unit is used to optimize the beam intensity by adjusting the azimuth and elevation angles with high resolution.

[0059] The technical enhancement module includes a distance fuzzy processing unit, a noise interference adjustment unit, a high-precision distance measurement unit and a time-space anti-correlation unit, and the output end of the technical enhancement module is unidirectionally connected to the input end of the distance fuzzy processing unit, the noise interference adjustment unit, the high-precision distance measurement unit and the time-space anti-correlation unit;

[0060] The distance fuzzy processing unit is used to improve the distance resolution capability by utilizing true random coding technology and chaotic light source;

[0061] The noise interference adjustment unit is used to improve the anti-interference capability by utilizing true random coding technology and chaotic light source;

[0062] The high-precision distance measurement unit is used to use a SPAD single-photon camera and time gating technology to finely move the time window to capture photons and improve the distance measurement accuracy;

[0063] The spatiotemporal anticorrelation unit is used to set a specific gating window and utilize the spatiotemporal anticorrelation of entangled photons to filter non-target light source signals.

[0064] Specifically, when in use, electromagnetic waves are transmitted by the transmitting module using antennas and other devices, the transmitted electromagnetic waves are received by the receiving module using antennas and other devices, the electromagnetic wave distance is measured by the ranging module when the electromagnetic waves are transmitted and received, and the signal of the near-infrared single-photon ranging radar system is enhanced by the signal processing module. Specifically, the signal amplification unit in the signal processing module amplifies the signal through a low-noise amplifier while reducing noise, and reduces noise interference by filtering and preprocessing the signal before it enters the main processing unit. The signal processing algorithm unit adjusts the filtering parameters through signal algorithm processing to optimize the signal-to-noise ratio, and the ranging distance is increased by the measurement accuracy adjustment module, thereby improving the light The photon receiving intensity is increased, thereby receiving more photons and enhancing the ranging accuracy. The signal power unit in the measurement accuracy adjustment module is used to reduce interference by enhancing the signal source power. The signal optimization unit is used to optimize the signal through high-performance signal processing technology. The algorithm processing unit uses machine learning, pattern recognition and multi-sensor data fusion technology to improve the target recognition ability and the accuracy of the overall system. While the ranging distance is increased by the measurement accuracy adjustment module, the photon receiving intensity is increased, thereby receiving more photons and enhancing the ranging accuracy. The signal power unit in the measurement accuracy adjustment module is used to reduce interference by enhancing the signal source power. The signal optimization unit is used to optimize the signal through high-performance signal processing technology. The algorithm processing unit is used to Machine learning, pattern recognition and multi-sensor data fusion technology improve the target recognition capability and the accuracy of the overall system. The reflectivity and photon amount are adjusted by the sensitive processing module. The reflectivity is adjusted by switching the reflection intensity of different materials through the reflection adjustment unit in the sensitive processing module. The photon increase unit increases the photon reception intensity by enhancing the photon reception intensity. The interference processing module is used to adjust the broadband, switch the frequency band and optimize the beam when interference problems occur. The broadband adjustment unit in the interference processing module adjusts the distributed radar frequency to avoid or disperse the interference signal. The frequency band switching unit combines the use of radars of different frequency bands to enhance the ability to respond to airborne interference equipment. The beam optimization unit is used to optimize the beam intensity by adjusting the azimuth and elevation angles with high resolution. The technology enhancement module is used to upgrade and enhance the internal technology when external interference occurs in the near-infrared single-photon ranging radar system. The distance fuzzy processing unit in the technology enhancement module improves the distance resolution capability by utilizing true random coding technology and chaotic light source. The noise interference adjustment unit improves the anti-interference capability by utilizing true random coding technology and chaotic light source. The high-precision ranging unit uses SPAD single-photon camera and time gating technology to finely move the time window to capture photons and improve the ranging accuracy. The space-time anti-correlation unit is used to set a specific gating window, and the space-time anti-correlation of entangled photons is used to filter out non-target light source signals.

[0065] 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. Ultra-long-range near-infrared single-photon ranging radar system, characterized in that: include: A near-infrared single-photon ranging radar system, a transmitting module, a receiving module, a ranging module, a signal processing module, a measurement accuracy adjustment module, a sensitive processing module, an interference processing module, and a technology enhancement module, wherein the output end of the near-infrared single-photon ranging radar system is unidirectionally connected to the input end of the transmitting module, the receiving module, the ranging module, the signal processing module, the measurement accuracy adjustment module, the sensitive processing module, the interference processing module, and the technology enhancement module; The signal processing module is used to enhance the signal of the near-infrared single-photon ranging radar system; The measurement accuracy adjustment module is used to increase the photon receiving intensity while increasing the ranging distance, thereby receiving more photons and enhancing the ranging accuracy; The sensitive processing module is used to adjust the reflectivity and the amount of photons when they occur; The interference processing module is used to adjust the broadband, switch the frequency band and optimize the beam when interference problems occur; The technology enhancement module is used to upgrade and enhance the internal technology when the near-infrared single-photon ranging radar system encounters external interference.

2. The ultra-long-range near-infrared single-photon ranging radar system according to claim 1, characterized in that: The transmitting module is used to transmit electromagnetic waves through an antenna or other equipment.

3. The ultra-long-range near-infrared single-photon ranging radar system according to claim 2, characterized in that: The receiving module is used to receive electromagnetic waves emitted by devices such as antennas.

4. The ultra-long-range near-infrared single-photon ranging radar system according to claim 3, characterized in that: The distance measuring module is used to measure the distance of electromagnetic waves when transmitting and receiving electromagnetic waves.

5. The ultra-long-range near-infrared single-photon ranging radar system according to claim 4, characterized in that: The signal processing module comprises a signal amplification unit and a signal processing algorithm unit, and the output end of the signal processing module is unidirectionally connected to the input end of the signal amplification unit and the signal processing algorithm unit; The signal amplification unit is used to reduce noise while amplifying the signal through a low noise amplifier, and to reduce noise interference by filtering and preprocessing the signal before it enters the main processing unit; The signal processing algorithm unit is used to adjust the filtering parameters through signal algorithm processing to optimize the ratio of signal to noise.

6. The ultra-long-range near-infrared single-photon ranging radar system according to claim 5, characterized in that: The measurement accuracy adjustment module includes a signal power unit, a signal optimization unit and an algorithm processing unit, and the output end of the measurement accuracy adjustment module is unidirectionally connected to the input end of the signal power unit, the signal optimization unit and the algorithm processing unit; The signal power unit is used to reduce interference by enhancing the signal source power; The signal optimization unit is used to optimize the signal by high-performance signal processing technology; The algorithm processing unit is used to utilize machine learning, pattern recognition and multi-sensor data fusion technology to improve target recognition capability and overall system accuracy.

7. The ultra-long-range near-infrared single-photon ranging radar system according to claim 6, characterized in that: The sensitive processing module comprises a reflection adjustment unit and a photon adding unit, and the output end of the sensitive processing module is unidirectionally connected to the input end of the reflection adjustment unit and the photon adding unit; The reflection adjustment unit is used to adjust the reflectivity by switching the reflection intensity of different materials; The photon increasing unit is used to increase the photon receiving amount by enhancing the photon receiving intensity.

8. The ultra-long-range near-infrared single-photon ranging radar system according to claim 7, characterized in that: The interference processing module includes a broadband adjustment unit, a frequency band switching unit and a beam optimization unit, and the output end of the interference processing module is unidirectionally connected to the input end of the broadband adjustment unit, the frequency band switching unit and the beam optimization unit; The broadband adjustment unit is used to avoid or disperse interference signals by adjusting the distribution radar frequency; The frequency band switching unit is used to enhance the ability to cope with airborne jamming equipment by combining and using radars of different frequency bands; The beam optimization unit is used to optimize the beam intensity by adjusting the azimuth and elevation angles with high resolution.

9. The ultra-long-range near-infrared single-photon ranging radar system according to claim 8, characterized in that: The technical enhancement module includes a distance fuzzy processing unit, a noise interference adjustment unit, a high-precision distance measurement unit and a time-space anti-correlation unit, and the output end of the technical enhancement module is unidirectionally connected to the input end of the distance fuzzy processing unit, the noise interference adjustment unit, the high-precision distance measurement unit and the time-space anti-correlation unit; The distance fuzzy processing unit is used to improve the distance resolution capability by utilizing true random coding technology and chaotic light source; The noise interference adjustment unit is used to improve the anti-interference capability by utilizing true random coding technology and chaotic light source; The high-precision distance measurement unit is used to use a SPAD single-photon camera and time gating technology to finely move the time window to capture photons and improve the distance measurement accuracy; The spatiotemporal anticorrelation unit is used to set a specific gating window and utilize the spatiotemporal anticorrelation of entangled photons to filter non-target light source signals.

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