System and method provided with calibration transmitting and receiving channels for real-time monitoring of multichannel transmitting and receiving delays

Abstract

The invention discloses a system and a method provided with calibration transmitting and receiving channels for real-time monitoring of multichannel transmitting and receiving delays. The method comprises the following steps of measuring a sum of closed loop delays of a calibration transmitting channel and a calibration receiving channel, and subtracting an absolute delay of the calibration transmitting channel from the sum of the closed loop delays to obtain an absolute delay of the calibration receiving channel; measuring a sum of the closed loop delays of a reflector inter-satellite link transmitting channel and the calibration receiving channel and a sum of the closed loop delays of a phased array inter-satellite link transmitting channel and the calibration receiving channel, and subtracting the absolute delay of the calibration receiving channel from the sums of the closed loop delays to obtain absolute delays of the reflector inter-satellite link transmitting channel and the phased array inter-satellite link transmitting channel; and measuring a sum of the closed loop delays of the calibration transmitting channel and a reflector inter-satellite link receiving channel and a sum of the closed loop delays of the calibration transmitting channel and a phased array inter-satellite link receiving channel, and subtracting the absolute delay of the calibration transmitting channel to obtain absolute delays of the reflector inter-satellite link receiving channel and the phased array inter-satellite link receiving channel. According to the system and the method, the real-time monitoring of the multichannel transmitting and receiving delays is realized, and the system and the method have the characteristic that the measured absolute delays of the transmitting channel and the receiving channel are accurate.

Description

technical field [0001] The present invention is a multi-channel transmission and reception delay real-time monitoring system and method with calibrated transmission and reception channels, that is, a multi-channel transmission and reception delay real-time monitoring system and method, and relates to the technical field of spread spectrum measurement, in particular to a A real-time monitoring system and method for multi-channel transmitting and receiving time delay of frequency measurement system. Background technique [0002] The second phase of my country's Beidou second-generation satellite navigation system will be expanded to a global satellite navigation system based on the first phase. The establishment of inter-satellite links is an effective means to improve the operation and control capabilities of the global system, improve the accuracy of space-time references, and improve the autonomous operation capabilities of constellations. The inter-satellite link provides...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the existing technology, to provide a multi-channel transmission and reception delay real-time monitoring method with calibrated transmission and reception channels, and to make up for the existing methods that cannot perform real-time monitoring and measurement of multi-channel transmission and reception delays. The disadvantage of inaccurate absolute time delay

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