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10 May 2011 Ground jammer localization with two satellites based on the fusion of multiple parameters
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Space Situational Awareness (SSA) requires the ability for secure communication of information and sensing of objects in space, reliable estimation on ground information from space, and command and control of sensor resources to space. Inherent in the secure, reliable, and robust coordination with space assets is the ability to monitor and detect jammer activities. This paper presents a ground jammer localization method by fusing multiple parameters (including time difference of arrival (TDOA), frequency and direction of arrival (DOA)) collected using two satellites via an extended Kalman filter (EKF) with a two-step initialization process. The first step uses DOA fusion and the second step uses DOA-TDOA fusion. The two-step initialization guarantees the convergence of the EKF and therefore the high localization accuracy. The simulation shows that the ground jammer can be localized using the space assets within 100 meters, which is accurate enough for many applications.
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Zhonghai Wang, Khanh Pham, Erik Blasch, and Genshe Chen "Ground jammer localization with two satellites based on the fusion of multiple parameters", Proc. SPIE 8044, Sensors and Systems for Space Applications IV, 804402 (10 May 2011);


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