research on stations deployment strategy for multi-static radar system

Paper number

IAC-08.A6.5.7

Author

Ms. Wang Haili, China

Year

2008

Abstract

Multi-static Radar System is constitutive of a center transmit-receive radar station and several receive radar stations around the center station. It is effective on space surveillance because  multi-static radar system is superior in positioning precision for space objects to one center transmit-receive radar station, This paper focuses on station deployment strategy for multi-static radar system.
The mathematics model is presented for space object measurement firstly. The positioning covariance matrix is deduced, and analytical formula of positioning precision is obtained for different height and distance. The positioning error of various configuration of multi-static radar system is computed with the help of numerical simulation. The configuration of multi-static radar system is decided by factors such as the number of receive stations, the distance and direction of receive stations relative to the center station. Stations deployment strategy is presented based on the simulation results.
The express algorithm of orbit determination is presented based on FG series. The error of orbit determination is computed for representative space objects and effective configurations of multi-static radar system. And the error data are used to verify stations deployment strategy based on positioning error.
The conclusions are presented with error analysis.
(1) The number of receive stations is primary factor for positioning precision. The multi-static radar system is capable of providing high positioning precision for space objects when there is at least two receive stations in the system.
(2) Symmetric geometry configuration of the receive stations relative to the center station is effective for high positioning precision. For example, the center station and two receive stations shape into an equilateral triangle. Three receive stations shape into an equilateral triangle and the center station is located on the triangular center.
(3) Distance between center station and receive station is an important factor. Long distance leads to little positioning error, while Long distance leads to little observation time and the error of orbit determination is increased. Thus distance needs to be considered synthetically. 

Abstract document

IAC-08.A6.5.7.pdf

Manuscript document

IAC-08.A6.5.7.pdf (🔒 authorized access only).

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