Method for detecting data transmission delay time of photoelectric theodolite wireless communication system

Abstract

The invention relates to a method for detecting data transmission delay time of a photoelectric theodolite wireless communication system, belonging to the technical field of photoelectric detection. The invention aims to provide a method for detecting data transmission delay time of a photoelectric theodolite wireless communication system. The technical scheme comprises the following steps: establishing high-precision clock targets; completing target range station arrangement of photoelectric theodolites; establishing a wireless communication link; putting the high-precision clock targets in the substations, so that the clock targets are clearly imaged in the viewing fields of the photoelectric theodolites in the corresponding substations; establishing a high-precision timing card for themaster station; realizing image transmission between the master station and the substations; extracting image time information, making a difference between the extracted image time information and the time information of the timing card of the master station, and storing the difference; continuously transmitting data for 2 hours, and carrying out difference storage on images of all frames; and processing data of the difference sequence to obtain the maximum time, the mean time and the variance index of data transmission delay, thereby completing the evaluation on the data transmission delay time of the photoelectric theodolite wireless communication system.

Description

Technical field [0001] The invention belongs to the technical field of photoelectric measurement, and particularly relates to a method for detecting the data transmission delay time of a photoelectric theodolite wireless communication system. Background technique [0002] The photoelectric theodolite is widely used in the measurement of the outer ballistic trajectory parameters of flying targets, and takes into account the real-time measurement of the flying target attitude. It is an important photoelectric testing equipment for the shooting range. With the continuous improvement of shooting range testing requirements, photoelectric theodolites have also ushered in rapid development. Traditional ground-based photoelectric theodolites can no longer meet the test requirements. Vehicle-mounted photoelectric theodolites with higher mobility have become the mainstream of design. In order to further improve vehicle-mounted photoelectric theodolites The flexibility and timeliness of the...

AI Technical Summary

Problems solved by technology

With the continuous improvement of the demand for shooting range testing, the photoelectric theodolite has also ushered in rapid development. The traditional ground-based photoelectric theodolite can no longer meet the test requirements. The vehicle-mounted photoelectric theodolite with higher mobility has become the mainstream of design. The flexibility and timeliness of theodolite station deployment, wireless communication instead of traditional cable and optical fiber communication has become the preferred solution for inter-station communication of vehicle-mounted photoelectric theodolite

Compared with wired communication systems such as optical fiber, the wireless communication system has the advantages of strong mobility and simple station deployment. However, its lack of stability and anti-interference ability cannot be ignored. One of the specific manifestations is the instability of its data transmission delay time. Due to Due to real-time changes in the shooting range environment and real-time differences in the amount of transmitted data, there is an unfixed time delay in the inter-station transmission of photoelectric theodolite image data, and this delay will affect the overall operation of the photoelectric theodolite measurement system to a certain extent. Therefore, how to effectively The data transmission delay time of the wireless communication system in the detection range has become a technical problem to be solved urgently

[0003] The traditional detection method of data transmission delay time uses computers between different stations to transmit fixed data packets through the spelling operation, and uses the link delay time displayed by the computer as the basis for judging the data transmission delay time of the wireless communication system. The amount of data is small and fixed, and it is impossible to simulate the real situation of data transmission between photoelectric theodolite stations. Therefore, it is imperative to provide a wireless communication system data transmission delay time detection method based on actual use conditions.

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