Zhao, Yan and Li, Yongqiang (2010) CRLB of initial state estimation for boost phase object based on 8-state gravity turn model using space-based observations. In: 2010 2nd International Conference on Signal Processings Systems (ICSPS 2010) : 5 - 7 July 2010, Dalian, China : proceedings. IEEE, Piscataway, N.J., pp. 781-789.

Abstract

This paper deducted the specific form of Cramer-Rao lower bound (CRLB) for the initial state estimation for the boost phase object based on the 8-state gravity turn model using space-based observations and illustrated the computation process with examples. In addition, the geometrical comprehension of the Fisher information matrix (FIM) of the single observation is presented, and how a target's launch point and shoot direction effects the CRLB based on the LOS measurements from sensor located on a geosynchronous earth orbit (GEO) satellite is investigated. Since shoot direction is of particular importance in early-phase warning, it is defined and computationally examined. Simulations are employed to testify the CRLB derivations and facilitate the understanding of the theoretical construct. The paper concludes with a summary of results and future work.

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