DESIGN, FABRICATION, AND TEST OF A FEASIBILITYMODEL RELATIVE STAR-ANGLE COMPARATOR
Abstract
A new and unique aerospace vehicle attitude system, designed around the Star-pair Angle Comparator, is described. The system basic ally measures the direction to any three of the 50 brightest stars, computes the angles between them and processes the information to provide a two-star identification and a highly accurate spatial attitude determination. System operation and performance are discussed along with a detail description of the feasibility model subsystems and their components. It is shown that the optical-electrical subsystems provide an equivalent startracker accuracy within ten arc seconds. The overall system accuracy, including scanner, gimballing and electronics, exceeds contractual requirements by a factor of two and is 20 arc seconds, demonstrated over-all system error excluding computation error.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1963
- Accession Number
- AD0430013
Entities
People
- G. Gulbenkian
- J. Abate
- P. Gevas