Detection on Satellite Navigation Deception Signals Based on Multi Platforms Cooperation

摘要

Effective detection on deception signals in satellite navigation is the important foundation and premise for subsequent deception signal rejection and location based on real navigation signals. At present, most of the proposed methods are based on the single platform application. Due to various reasons, the further improvement of effectiveness and applicability is difficult. In order to solve above problems, a conical constraint condition of two platforms is established by using the advantage of multi platforms networking cooperation and the time difference measurement of the received signals. Then the direction of signal arrival in the coordinate system of multi platforms spatial configuration is obtained by several conical constraint equations. The cross-angle matrix of signals direction can be gotten naturally. At the same time, the cross-angle matrix of standard signals direction is obtained from the known navigation satellite almanac. Therefore, the difference between the actual matrix and the reference one is contrasted to detect navigation deception signals. Finally, the validity and practicability of this method are verified by simulations. It provides a new technical approach for satellite navigation deception signals recognition and anti-deception processing.