Accession Number : AD0707419

Title :   TECHNIQUES FOR GENERATING GUIDANCE SIGNALS FROM BODY-FIXED SENSORS.

Descriptive Note : Interim technical rept. no. 1, 10 Apr 69-10 Mar 70,

Corporate Author : GEORGIA INST OF TECH ATLANTA ENGINEERING EXPERIMENT STATION

Personal Author(s) : Wetherington, R. D. ; Birchfield, J. L.

Report Date : 10 MAR 1970

Pagination or Media Count : 79

Abstract : The applicability of body-fixed sensors to the guidance of homing missiles for air intercept was investigated. Sensor types examined included optical-TV, infrared, and radar. It was concluded that within the present state-of-the-art, only the phased array radar is suitable as a body-fixed sensor for proportional navigation guidance against high-speed crossing targets. Various control system configurations for developing guidance signals from body-fixed sensors were examined. It was found that in order to implement a proportional navigation system on an air-intercept missile some form of seeker compensation is required. One method of doing this is to increase the seeker natural frequency to a very high rate; another is to feed missile attitude information to the seeker in such a manner that it effectively eliminates the effect of missile maneuvers on the seeker's pointing direction. Computer simulation techniques were used to verify the theoretical results, and also to investigate the system sensitivity to rate errors and lag in the feedback network. Digital simulations of air-intercept flight were developed and are described in the Appendices. (Author)

Descriptors :   *SURFACE TO AIR MISSILES, *DETECTORS, MATHEMATICAL MODELS, RADAR HOMING, INFRARED EQUIPMENT, OPTICAL EQUIPMENT, PROPORTIONAL NAVIGATION, GIMBALS, RADOMES, FEEDBACK, ERRORS, INTERCEPTION PROBABILITIES, COMPUTER PROGRAMS.

Subject Categories : Air Navigation and Guidance
      Active & Passive Radar Detection & Equipment
      Optical Detection and Detectors
      Infrared Detection and Detectors
      Surface-launched Guided Missiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE