Accession Number : ADA017012

Title :   Position Measurement Standard Evaluation.

Descriptive Note : Final rept. Jan-Aug 74,

Corporate Author : TRANSPORTATION SYSTEMS CENTER CAMBRIDGE MA

Personal Author(s) : Canniff, John ; Gundersen, Richard ; Gakis, John

Report Date : FEB 1975

Pagination or Media Count : 58

Abstract : The objectives of the Position Measurement Standard Program were to collect navigation data from three DME receivers and a low-frequency GLOBAL Navigation system, and evaluate their relative performance against a reference radar. Flight test data during June and July, 1974, established the following: triple DME was an order of magnitude more accurate than the GLOBAL system; triple DME accuracy was repeatable, smooth over all flight regions, and insensitive to initial condition, whereas GLOBAL system accuracy varied from run to run, exhibited large random errors and quantum 'jumps', and was dependent upon error nulling procedures prior to system initialization.

Descriptors :   *DISTANCE MEASURING EQUIPMENT, *RADIO NAVIGATION, PERFORMANCE(ENGINEERING), GLOBAL, VERY LOW FREQUENCY, ERRORS, ACCURACY, NAVIGATION.

Subject Categories : Navigation and Guidance
      Target Direction, Range and Position Finding

Distribution Statement : APPROVED FOR PUBLIC RELEASE