摘要
Obtaining precise position of interested emitters passively has wide applications in both civilian and military fields.Different from traditional parameter measurement and direct position determination(DPD)method,recently a new passive localization method based on synthetic aper-ture technique,named synthetic aperture positioning(SAP),has been proposed.The method com-pensates for the nonlinear phase produced by relative motion between the moving platform and the emitter,achieving coherent summation of intercepted signals.The SAP can obtain high-resolution and high-precision localization results at a low signal-to-noise ratio.This paper summarizes the research progress of SAP,including localization principles,spaceborne applications,and application scope analysis.Besides,the possible future outlook of SAP is considered.
基金
supported in part by the National Science Fund for Excellent Young Scholars(No.62222113)
in part by the joint Funds of the National Natural Science Foundation of China(No.U22B2015)
in part by the stabilization support of National Radar Signal Processing Laboratory(No.KGJ202203)
in part by the Fundamental Research Funds for the Central Universities(No.ZDRC2004).
