Accession Number:

AD1064582

Title:

Synthetic Aperture Radar for Helicopter Landing in Degraded Visual Environments

Descriptive Note:

Technical Report,01 May 2018,31 Aug 2018

Corporate Author:

US Army Research Laboratory Adelphi United States

Personal Author(s):

Report Date:

2018-12-13

Pagination or Media Count:

69.0

Abstract:

This report analyzes the forward-looking synthetic aperture radar SAR system for helicopter landing assistance in degraded visual environments, currently under design at the US Army Research Laboratory. The main focus of the investigation is on SAR imaging and antenna array processing techniques. In particular, the systems point spread function is analyzed in detail by quantifying the main performance metrics resolution, sidelobes, and grating lobes. Analytic and numeric results are illustrated with 3-D graphics. Tradeoffs and performance improvement methods are discussed. Additionally, we review several options for antenna array design and undertake a sensitivity study of the 3-D SAR image quality with respect to platform positioning errors. A design case study is presented as well, emphasizing aspects such as radar waveforms, timing, and power requirements.

Subject Categories:

  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE