Simulation Study on Detection and Estimation of Closely Spaced Optical Targets
Abstract
The observed signal which originates from two point targets may exhibit only one apparent peak when they are located within one detector width. The Akaike information criterion and a maximum likelihood estimator are used to detect and estimate such unresolved targets. For target separation between 3/4 and 1 detector width the detection rate is high, the estimator is unbiased and the estimation variance is close to the Cramer-Rao bound. The performance degrades greatly when the separation becomes smaller. This loss in performance is attributed to the increasingly interference between the two targets and the difficulty in providing a 'good' initial guess for the estimator.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 18, 1980
- Accession Number
- ADA088098
Entities
People
- Ming-jer Tsai
Organizations
- Massachusetts Institute of Technology