Reconnaissance satellite positioning and estimating method

Abstract

The invention provides a reconnaissance satellite positioning and estimating method. According to the method, the initial position and the initial speed of a target reconnaissance satellite in the zero hour are acquired by using a Beidou satellite; a simplified motion equation of the target reconnaissance satellite is established, the simplified motion equation of the target reconnaissance satellite is revolved, and a nolinear differential equation model which can determine the estimated position of the target reconnaissance satellite is established; and the established nolinear differential equation model is solved, so that the estimated position of the reconnaissance satellite required to be observed at each time point is obtained, and positioning and estimating are performed. By means of the method, the reconnaissance satellite can be more accurately, more reliably and more independently positioned and estimated, a better information foundation can be provided for judging and mastering a flight intention, a flight state and a flight tendency of the target reconnaissance satellite, and the method is simple and easy to implement and high in practicability.

Description

technical field [0001] The invention relates to the technical field of satellite positioning, in particular to a reconnaissance satellite positioning estimation method. Background technique [0002] The Beidou satellite navigation system is a self-developed and independently operated global satellite navigation system that is being implemented in my country. It can provide users with all-weather, all-time high-precision and high-reliability positioning services, and has short message communication functions. The Beidou satellite navigation system consists of three parts: the space terminal, the ground terminal and the user terminal. The Beidou satellite navigation system has great strategic and economic significance for promoting the development of my country's satellite navigation and positioning business and meeting the needs of my country's military and national economy. However, the Beidou satellite navigation system can only perform real-time positioning of the objects...

AI Technical Summary

Problems solved by technology

[0004] In the traditional reconnaissance satellite positioning estimation method to detect and acquire the initial position and initial velocity of the target reconnaissance satellite at zero time, the infrared optical detector is generally used for detection and acquisition, but only the infrared radiation information of the target is received, which can be oriented but not ranged. , and is susceptible to climate influence and cloud interference, the reliability is not good enough

In addition, the traditional reconnaissance satellite positioning estimation method still has shortcomings such as the need for coordinate transformation, too many variables to be obtained, complex calculations, and insufficient estimation accuracy.

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