Accession Number:

AD0752466

Title:

All-Weather, Low-Level Navigation and Implementation of a One-Way Ranging, Range-Range Navigation System.

Descriptive Note:

Semi-annual rept. no. 5, 10 Oct 71-10 Apr 72.

Corporate Author:

OHIO UNIV ATHENS DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

Report Date:

1972-10-01

Pagination or Media Count:

98.0

Abstract:

The report covers work on a LF prototype radio navigation system to provide a backup short-baseline navigation capability for Army aeronautical missions operating from ADF beacon stations. Pursuit of methods to reduce the cost of user equipment has led to the development of a digital receiver with the ability to tune within the LF band. This effort was supported by tradeoff comparison studies between analog and digital receiver methods, a direct-digital frequency synthesizer design for tuning purposes, digitally-tuned superheterodyne receiver techniques, CORDIC digital processor development for navigation coordinate conversion, and relative and absolute phase error analysis. Author

Descriptors:

• *RADIO NAVIGATION
• *RADIO EQUIPMENT
• *ALL WEATHER AVIATION
• RADIO RECEIVERS
• RADIO BEACONS
• LOW FREQUENCY
• FREQUENCY SYNTHESIZERS
• MULTIPLE OPERATION
• DIGITAL SYSTEMS
• NAVIGATION COMPUTERS
• OPTIMIZATION
• COMPUTER PROGRAMS

Subject Categories:

• Air Navigation and Guidance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE