Accession Number : AD0765503

Title :   Implementation of a One-Way Ranging, Range-Range Navigation System.

Descriptive Note : Semi-annual rept. no. 7, 10 Oct 72-10 Apr 73.

Corporate Author : OHIO UNIV ATHENS DEPT OF ELECTRICAL ENGINEERING

Report Date : JUL 1973

Pagination or Media Count : 57

Abstract : Computer simulation results comparing analog and digital phase estimation techniques for navigation applications were completed showing negligible difference for optimized estimator structures and identical SNR. An optimized, low cost, and highly stable digital mechanization is also described. The completion and experimental results of the phase-coherent frequency synthesizer using direct-digital methods is also reported on in this issue including complete schematic diagrams. Concluding description is presented on improvements to the digitally-tuned LF navigation receiver. Specifically described is the design of navigation receiver front-ends for minimum distortion with an extensive treatment of methodology and performance tradeoffs. (Author)

Descriptors :   *ALL WEATHER AVIATION, *RADIO NAVIGATION, RADIO EQUIPMENT, LOW FREQUENCY, DIGITAL SYSTEMS, FREQUENCY SYNTHESIZERS, RADIO RECEIVERS, SIMULATION.

Subject Categories : Air Navigation and Guidance
      Military Aircraft Operations

Distribution Statement : APPROVED FOR PUBLIC RELEASE