Research on the direct location of double-satellite to the unknown ground radiation source

Abstract

This paper proposes a direct location algorithm of pulses phase-coherent accumulation for unknown radiation source to deal with the issue of constrained positioning accuracy caused by parameter measurement for the passive location of ground radiation source via satellite platform. The algorithm applies the principle of maximum likelihood estimation to generate the cost function using the information of pulse time and phase differences of arrival. Simulation analysis demonstrates that the location method can be efficiently utilized on satellite platforms, and pulses phase-coherent accumulation can successfully minimize location error in the presence of low SNR.

Keywords

• double-satellite|tdoa|phase difference|direct location|coherent accumulation