Photoelectric theodolite time synchronization accuracy detection system and detection method
A technology of time synchronization accuracy and photoelectric theodolite, which is applied to instruments, measuring devices, etc., can solve the problems of inability to detect the time synchronization accuracy of digital photoelectric theodolite, and achieve the effect of convenient field detection and strong portability
Inactive Publication Date: 2018-02-06
中国人民解放军63636部队
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[0003] In order to solve the problem that existing conventional instruments cannot detect the time synchronization accuracy of digital photoelectric theodolite, the invention provides a photoelectric theodolite time synchronization accuracy detection system and detection method
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specific Embodiment approach 1
[0027] Specific implementation mode 1. Combination figure 1 , figure 2 and image 3 To illustrate this embodiment, the photoelectric theodolite time synchronization accuracy detection system of the present invention includes a standard time formation unit 10 , a time information optical encoding unit 20 , a dot matrix optical signal output unit 30 and a supporting dot matrix image interpretation module 40 .
[0028] The standard time forming unit 10 decodes the input GPS signal or IRIG-B code to generate a parallel time code. GPS signal includes GPS serial time information and GPS second signal; IRIG-B code is IRIG-B (AC) code or IRIG-B (DC) code. Such as figure 1 As shown, the standard time forming unit 10 includes a single chip microcomputer 11 , a menu control module 12 , an IRIG-B (AC) code preprocessing circuit 13 , a field programmable gate array (FPGA) 14 and a temperature-compensated crystal oscillator 15 .
[0029] The menu control module 12 is an interface for m...
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The invention discloses a photoelectric theodolite time synchronization accuracy detection system and detection method and belongs to the technical field of photoelectric measurement. The photoelectric theodolite time synchronization accuracy detection system includes the steps that a standard time forming unit decodes input GPS signals or IRIG-B codes, and parallel time codes are generated; a time information optical encoding unit displays the parallel time codes through a dot matrix module; a dot matrix light signal output unit outputs 32-bit parallel time codes of current time in a dot matrix mode so that a detected photoelectric theodolite can perform real-time photographing; a dot matrix image judging and reading module acquires the exposure moment from packet headers of files of photographed images and saved images. The detection method utilizes the detection system to perform detection, the difference values of exposure moments generated many times are averaged so that photoelectric theodolite time synchronization accuracy can be determined. The system and method guarantee the accuracy of detection instruments, can remarkably reduce random errors in the detection process and fast achieve photoelectric theodolite time synchronization accuracy detection.
Description
technical field [0001] The invention belongs to the technical field of photoelectric measurement, and in particular relates to a photoelectric theodolite time synchronization accuracy detection system and detection method. Background technique [0002] Time synchronization accuracy is an important indicator of the optical measurement equipment - photoelectric theodolite, which reflects the time difference between the actual imaging moment of the photoelectric theodolite and the photographic reference moment. The accuracy of time synchronization is not high, which directly affects the accuracy of the intersection of ballistic data outside the aircraft. The digital photoelectric theodolite uses a CMOS (Complementary Metal Oxide Semiconductor) camera to replace the film as the imaging device. There is no shutter signal feedback from the mechanical camera. In the past, the method of detecting the synchronization accuracy of the imaging time by the photographic pulse and the film...
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IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 周厚成刘晖谷锁林赵民伟邱扬刚孟尉玺陈志江骆长春钟明皓
Owner 中国人民解放军63636部队