Accession Number : AD0768716

Title :   Open-Loop Tracking of Moving Targets with an Aerobee Sounding Rocket,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Steeves,R. G. ; Ammons,R. L. ; Hedberg,J. H.

Report Date : 15 AUG 1973

Pagination or Media Count : 9

Abstract : Tracking at finite (time-varying) range between target and Aerobee introduces problems unique in the use of sounding rockets. Systems synthesis was employed to determine the optimum instrument field-of-view considering background, launch errors, pointing errors, and Aerobee and target position errors versus time. An inertially referenced three-axis attitude control was employed to maintain the target within the field-of-view using pre-programmed maneuvers based upon the predicted relationship between target and Aerobee trajectories. Flight results from on-board aspect camera correlation with target and stellar background demonstrated that a moving target can be open-loop tracked with very good accuracy through rigorous control of error sources and comprehensive mission analysis. (Author)

Descriptors :   (*OPTICAL TRACKING, *SOUNDING ROCKETS), PAYLOAD, CONTROL SYSTEMS

Subject Categories : Optical Detection and Detectors
      Rockets

Distribution Statement : APPROVED FOR PUBLIC RELEASE