Accession Number : ADA306521

Title :   The Use of GPS for Evaluating Inertial Measurement Unit Errors,

Corporate Author : NATIONAL AIR INTELLIGENCE CENTER WRIGHT-PATTERSON AFB OH

Personal Author(s) : Mei, Sun

PDF Url : ADA306521

Report Date : 15 MAR 1996

Pagination or Media Count : 20

Abstract : During missile flight tests, a trajectory reference system based on GPS can be used in place of conventional radars. Due to the high precision of GPS trajectory references, it is, therefore, possible to make use of them in order to evaluate missile inertial measurement unit performance. Before two recent launches of Hepingbaoweizhe (peacekeeper) missiles, GPS transmitters and three wave band antennas were installed on them. On the basis of GPS measurement ranges and range increment data, use was made of kalman wave filter methods to estimate individual IMU errors. Results clearly demonstrated that GPS is superior to radar.

Descriptors :   *GLOBAL POSITIONING SYSTEM, *INERTIAL MEASUREMENT UNITS, TEST AND EVALUATION, GUIDED MISSILES, FLIGHT TESTING, KALMAN FILTERING, RADAR, ERRORS, TRANSLATIONS, FILTERS, TRAJECTORIES, SURFACE TO SURFACE MISSILES, WAVES, CHINA, CHINESE LANGUAGE.

Subject Categories : Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE