Accession Number:

AD1111206

Title:

Polar Format Algorithm for 3-D Imaging with Forward-Looking Synthetic Aperture Radar

Descriptive Note:

[Technical Report, Technical Report]

Corporate Author:

Combat Capabilities Development Command Army Research Laboratory

Personal Author(s):

Report Date:

2020-09-01

Pagination or Media Count:

71

Abstract:

This report investigates the application of the polar format algorithm PFA to 3-D image formation using the forward-looking synthetic aperture radar system proposed by the US Army Combat Capabilities Development Command Army Research Laboratory with the goal to assist helicopter landing in degraded visual environments. The basic PFA is developed for this unusual radar sensing geometry, emphasizing some differences from the traditional side-looking SAR configuration. Several implementation details are discussed, such as sampling requirements, data interpolation, and the algorithm extension to multistatic antenna array. We then develop a procedure for wavefront curvature error correction WCEC, starting with a thorough analysis of these phase errors and ending with a description of the WCEC algorithm implementation. At each stage along the way, we illustrate the theory with numerical examples.

Descriptors:

Subject Categories:

  • Active and Passive Radar Detection and Equipment

Distribution Statement:

[A, Approved For Public Release]