Dual-Seeker Measurement Processing for Tactical Missile Guidance
Abstract
The available measurements from a strapdown seeker and a gimballed seeker onboard an air-to-ground anti-radiation missile are analyzed through an extended Kalman filter simulation. Detailed models of both seekers are developed. Only angular measurements are assumed available from the seekers: angle measurements from the strapdown seeker and angle and angle-rate measurements from the gimballed seeker. A 6-state extended Kalman filter model is used to estimate the ground target's position and relative velocity using the seeker's measurements. Four measurement policies are compared to analyze use of the gimballed seeker early in the missile flight and loss of the strapdown seeker in midflight. The results revealed an observability problem in one channel of the filter, that along the range vector. Analyses were made only by comparisons of performance in the other two channels. The comparisons showed insignificant degradation to filter performance through loss of the strapdown seeker at midflight, and substantial benefit from use of the gimballed seeker as early as possible in the flight. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1982
- Accession Number
- ADA124725
Entities
People
- Andrew C. Weston
Organizations
- Air Force Institute of Technology