Accession Number : AD0783638

Title :   CIRIS Transponder Deployments for Testing Inertial Navigation Systems.

Descriptive Note : Final technical rept.,

Corporate Author : INTERMETRICS INC CAMBRIDGE MA

Personal Author(s) : Widnall, William S. ; Ku, Richard T.

Report Date : 13 AUG 1974

Pagination or Media Count : 217

Abstract : The completely integrated reference instrumentation system (CIRIS) system at Holloman Air Force Base provides a highly precise reference for the flight testing of navigation and guidance systems. CIRIS subsystems include an inertial navigation system (INS), a Doppler velocity sensor, and a precision ranging system. This report evaluates the effect of the deployment of the transponders of the precision ranging system on CIRIS position/velocity/attitude accuracy and on the estimation of sources of error in an INS under test. Position accuracy with basic two and three transponder deployments is explored with a simple position fix error analysis. Position/velocity/attitude accuracy for a variety of multi-transponder deployments is evaluated using the CIRIS post-flight processor on simulated CIRIS flight data. The performance improvement with Doppler data is presented. (Modified author abstract)

Descriptors :   *INERTIAL NAVIGATION, TRANSPONDERS, DEPLOYMENT, TEST EQUIPMENT, ACCURACY, ERRORS, RANGE FINDING, PRECISION, POSITION FINDING, VELOCITY, ATTITUDE INDICATORS, KALMAN FILTERING, FLIGHT TESTING.

Subject Categories : Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE