High repetition rate satellite laser ranging real-time control system

Abstract

The invention discloses a high-repetition-rate satellite laser ranging real-time control system, and relates to the technical field of satellite laser ranging. According to the system, a mode of combining industrial-grade hardware and embedded software is adopted. The system comprises a CompactRIO controller, a digital I / O expansion module and a GPS time frequency receiver; the CompactRIO controller integrates a real-time processor unit and a reconfigurable FPGA (Field Programmable Gate Array) unit, so that the integration level and the reliability of the ranging control system are improved; an external I / O (Input / Output) adopts a modular extension mode, and each function extension module I / O is directly connected with the reconfigurable FPGA unit, so that the signal delay is extremely low. According to the system of the invention, a TSN time sensitive network is utilized, high-precision network time service from a GPS time frequency receiver to the CompactRIO controller is realized directly through a PTP precise time protocol, and a reliable standardized time synchronization scheme is provided for high automation of ranging control. Real-time sensitive operation in ranging control is completed in an embedded real-time operating system, and high real-time performance, high certainty and high reliability of high-repetition-rate ranging control are achieved.

Description

technical field [0001] The invention relates to the technical field of satellite laser ranging, in particular to a high repetition rate satellite laser ranging real-time control system. Background technique [0002] Satellite Laser Ranging (SLR, Satellite Laser Ranging), as the space geodetic technology with the highest single-point ranging accuracy, has been continuously iterated and improved since its development in the 1960s. It is the application of key technologies such as kHz high repetition rate ranging, which has significantly improved the detection capability and ranging accuracy of the SLR system. In recent years, many laser ranging stations at home and abroad have successively carried out ultra-high repetition rate ranging with a repetition rate of more than 100 kHz, which has become a new research and experimental hotspot, and is also an important development trend of SLR technology in the future. The new technology puts forward more stringent requirements for t...

AI Technical Summary

Problems solved by technology

[0003] At present, domestic laser ranging stations mostly use Windows operating system running on a general-purpose computer platform as the operating environment of the upper computer ranging control software. However, Windows operating system is used as a non-real-time operating system to complete the command distribution and timing in the process of SLR ranging. Controls have significant technical limitations

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