High Resolution Radar Imaging
Abstract
The goal of this project is to formulate and investigate new approaches for forming images of radar targets from spotlight-mode, delay- doppler measurements. These measurements could be acquired with a high- resolution radar-imaging system operating with an optical-or radio-frequency carrier. Two approaches are under study. The first is motivated by an image- reconstruction algorithm used in radionuclide imaging called the confidence- weighted algorithm; here, we will refer to this approach as the chirp-rate modulation approach. The second approach is based on more fundamental principles which starts with a mathematical model that accurately describes the physics of an imaging radar-system and then uses statistical-estimation theory with this model to derive processing algorithms; we will refer to this as the estimation- theory approach. Progress during this reporting period has been made on: (1) extending the estimation-theory approach to include a constraint on input signal-to-noise ratio; (2) extending the estimation-theory approach to include a sieve constraint for stabilizing image estimates, (3) extending the estimation- theory approach to include a specular or glint component in the radar-echo data; (4) analyzing the performance of the estimation-theory approach through computer simulations; and (5) modifying the chirp-rate modulation approach through the introduction of the Wigner-Ville distribution. A patent was awarded associated with the chirp-rate modulation approach. A copy of the patent is bound into this report.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 30, 1988
- Accession Number
- ADA206931
Entities
People
- Donald L. Snyder
Organizations
- University of Washington