Accession Number : AD0757586

Title :   Hybrid Simulation for the Study of Loran-C signal Processing Techniques.

Descriptive Note : Technical memo.,

Corporate Author : JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB

Personal Author(s) : Bohn, P. F. ; Nisson, C. J.

Report Date : JAN 1973

Pagination or Media Count : 37

Abstract : The Loran-C navigation system operates in a complex signal environment that contributes significantly to the system's reduced accuracy and reliability for ground position determination. The paper discusses a hybrid simulation that has been conceived to study this problem. The method used was to develop a signal-processing technique that would recognize and discard corrupt data. The analog computer was used to generate timing pulses and perform 5 mirosecs in-phase and quadrature integrations of the Loran-C signal. The results of the integration were stored in the digital computer for processing. The goal was to achieve a positioning accuracy of 10 ns, an order of magnitude improvement over that of equipment presently available. (Author)

Descriptors :   *LORAN, SIMULATION, STATISTICAL DISTRIBUTIONS, CONTROL SEQUENCES.

Subject Categories : Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE