Mechanization and Error Analysis of Aiding Systems in Civilian and Military Vehicle Navigation Using Matlab Software

Abstract

In present scenario GPS is widely used to provide extremely accurate position information for navigation. From, where the GPS does not give continuous localization in environments where signal blockages are present, Inertial Navigation System comes into action. Because of sensors present in INS and time integration process, errors get accumulated over time. Henceforth, an aiding system is integrated with INS. The aim of this paper is to model VMS and RADAR and aid it with INS in order to overcome its errors. VMS is aided to INS to achieve acceptable accuracy and ease of implementation, much needed in civilian navigation. Different trajectories are generated to offer solutions in a practical scenario. Whereas, for highly accurate positioning in military navigation a reliable aiding system, Radar has been opted. The Kalman filter is designed and modeled as the integrating element in INS/RADAR, to provide an optimal estimate of navigation solutions. An error analysis has been done for both INS aided VMS and INS aided Radar systems. The navigation performance of VMS and Radar aiding system is compared and their merits have been brought out. We besides give the readers a more honest insight of the demand for an aiding system in different environments based on various simulation results.