Pulse laser ranging error compensation method based on GABP

A pulsed laser ranging and error compensation technology, applied in the fields of laser ranging and data processing, can solve problems such as saturation drift error and failure, and achieve the effect of high precision, easy implementation and high precision

Active Publication Date: 2020-11-24
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2) Walking error
This method fails when the echo signals of two targets at different distances are saturated
3) Saturation drift error
There are currently no reports to analyze and compensate for such errors

Method used

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  • Pulse laser ranging error compensation method based on GABP
  • Pulse laser ranging error compensation method based on GABP
  • Pulse laser ranging error compensation method based on GABP

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Embodiment Construction

[0036] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0037] The technical scheme that the present invention solves the problems of the technologies described above is:

[0038] The present invention mainly comprises following technical means:

[0039] 1. Circuit design

[0040] The circuit design mainly includes echo detection circuit based on fixed threshold and time interval measurement circuit. The core part of the fixed-threshold echo detection circuit is a photodetector, which detects the echo signal and converts the optical signal into an electrical signal. The core part of the time interval measurement circuit is a high-speed timer or a dedicated time measurement chip (TDC), which is used to receive the signal from the detection circuit, trigger th...

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Abstract

The invention requests to protect a pulse laser ranging error compensation method based on GABP, and the method comprises the following steps: 1, designing a hardware circuit which is used for detecting an optical signal, converting the optical signal into an analog electric signal, and converting the analog signal into a digital signal through employing a fixed threshold value; inputting the digital signal into a time measurement unit, and measuring the pulse width of the echo signal and an original flight time parameter value; 2, setting different target objects, and obtaining the parametervalues of the pulse width and flight time error of the echo signal in the data obtaining mode in the step 1; the data analysis software obtains correction curve network parameters by using a GABP regression analysis method; 3, writing the optimized neural network parameters obtained in the step 2 into a microprocessor; and carrying out an actual ranging test in a range of 60-600cm, and verifying the ranging precision of the range finder based on the GABP compensation algorithm.

Description

technical field [0001] The invention belongs to laser distance measurement and data processing technology, in particular to a GABP-based pulse laser distance measurement error compensation method. Background technique [0002] Pulse laser ranging calculates the target distance by measuring the flight time from the laser emission to the echo, and using the constant of the speed of light. It has the advantages of long distance, fast speed and strong anti-interference. It is widely used in military, aerospace, surveying and mapping, transportation, national defense and many other fields. [0003] The pulse laser ranging system mainly includes four parts: a pulse laser emitting module, a laser receiving module, a time identification module and a signal processing module. The principle of pulsed laser ranging is mainly to identify the frontier time difference between the transmitted signal and the echo signal to measure the actual distance of the target. The bandwidth and dyna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/10G01S7/497G06N3/04G06N3/08G06N3/12
CPCG01S17/10G01S7/497G06N3/084G06N3/086G06N3/126G06N3/045
Inventor 亓林刘宇邹新海曹加昇田健刘茄鑫杨勇路永乐
Owner CHONGQING UNIV OF POSTS & TELECOMM
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