Precise satellite orbit determination technology only based on radio carrier phase observation

Abstract

The invention provides a technical scheme of simultaneously and precisely tracking a plurality of space objects only based on carrier observation data of ground monitoring equipment driven by an atomic frequency standard for fulfilling the purposes of high-precision orbit determination of regional navigation satellites and precise passive tracking of non-cooperative space objects. The invention designs a parameter evaluation estimation scheme of precise orbit determination only based on carrier phase data and provides a novel carrier phase cycle slip detection and repair method. The method makes full use of priori orbit and prior atomic clock speed information and is suitable for static users. The method is applied to orbit determination processing of an MEO (Medium Earth Orbit) satellite of a COMPASS system and is only based on carrier phase data of 6 regional ground stations, the mean residual of arc length orbit determination results of three days is 0.18m, and the mutual differences of one-day-arc overlap orbit are 0. 61m and 8. 09m in radial direction and three-dimensional position respectively; the mean residual of laser comparison is 0.28m; the mean residual of forecast for 24 hours and laser alignment is 1.34m. Compared with that of the prior art, the orbit determination precision is improved by 1 order.

Description

technical field [0001] The invention relates to the technical fields of astrometry, satellite navigation and the like, especially the precise passive tracking technology of non-cooperative space targets. Background technique [0002] Since the launch of artificial earth satellites in the 1950s, determining the position of satellites has become a basic need for astronomers. After decades of hard work, humans have developed Doppler observation, optical angle observation, distance observation, and distance change rate observation [1] , VLBI observation and other means to realize the determination of the satellite orbit. So far, distance observation has become a technical means to achieve the best degree of automation for artificial earth satellite orbit tracking, the most widely used, the highest reliability, and the most convenient modeling data processing [2] . Satellite orbit tracking methods based on distance observations can also be divided into laser ranging observatio...

AI Technical Summary

Problems solved by technology

For example, the U.S. GPS navigation satellites will stop broadcasting civilian ranging code signals during wartime, while military ranging code signals can only be used by authorized users, and other users will not be able to achieve pseudo-range observation, navigation guidance, let alone precise tracking of satellites

In general, it is impossible to obtain direct distance observations for non-cooperative military targets, and it is also difficult to achieve pseudo-range observations through their encrypted ranging codes

Using other active observation methods, such as active radar ranging and tracking, on the one hand, the number of tracking targets is limited, on the other hand, it is easy to expose the targets of the tracking station, and it is easy to cause interference to air targets and cause diplomatic disputes

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