Clutter Cancellation Techniques for Use in a Space-Based Radar System.
Abstract
The ability of a space-based radar surveillance system to obtain target information from a clutter corrupted radar echo signal is dependent on the clutter cancellation technique employed. To thoroughly understand the nature of clutter so as to efficiently and effectively design and develop clutter cancellation techniques, fundamental mathematical relationships dealing with radar signal representation, probability theory, detection and estimation theory and signal comparison techniques were established and defined. Since the implementation of the mathematical expressions which describe clutter and clutter cancellation techniques are accomplished digitally, digital signal representation and digital filter characterization via FFt's were also established and defined. Drawing upon the established mathematical principles, as well as temporal probability models, spectral models and average backscatter coefficient models, clutter was described. Capitalizing on the different spectral characteristics between clutter and targets, three representative doppler cancellation schemes were developed. The three schemes were delay line cancelers, doppler filter banks and multiple look systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1983
- Accession Number
- ADA138467
Entities
People
- J. Devenuto
Organizations
- Air Force Institute of Technology