Accession Number : AD0760551

Title :   Error Reduction in a Two-Gimbal, Airborne, Angle Track System.

Descriptive Note : Masters thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s) : Wright,George L.

Report Date : MAR 1973

Pagination or Media Count : 77

Abstract : Angle measurement in a two-gimbal, airborne, tracking system is complicated by the motion of the aircraft. The two-gimbal system is characterized by the azimuth and elevation channel control systems. Rolling motions introduce error-causing disturbance inputs into each channel. One method of reducing the error investigated in this report is a linear transformation method which treats both channels simultaneously by considering a cross-coupled multivariable system. Another method, the invariance method, utilizes a feed forward branch whose input is the unwanted disturbance to reduce the error due to aircraft roll rate for each channel separately. (Modified author abstract)

Descriptors :   (*SEARCH RADAR, RELIABILITY(ELECTRONICS)), (*GIMBALS, ERRORS), AIRCRAFT EQUIPMENT, RADAR TRACKING, ROLL, PITCH(MOTION), YAW, AZIMUTH, MATHEMATICAL MODELS, THESES

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE