Accession Number:

ADA522289

Title:

Synthetic Aperture Radar Images of a Simple Room Based on Computer Models

Descriptive Note:

Final rept. 2007-2010

Corporate Author:

ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE

Personal Author(s):

Report Date:

2010-05-01

Pagination or Media Count:

62.0

Abstract:

This report investigates the application of synthetic aperture radar SAR imaging techniques to sensing through the wall STTW scenarios based on radar data obtained through computer simulation of electromagnetic EM scattering problems using either the Finite Difference Time Domain FDTD method or Xpatch. We analyze the radar phenomenology for simple through-the-wall imaging scenarios and offer guidelines for a performance prediction and radar parameter trade-off. Our simulations show that, for these configurations, SAR techniques clearly resolve human targets when the construction material is brick, but do not achieve the same performance for concrete or cinder block walls. We demonstrate that using the cross-polarization radar mode can result in enhanced target-to-clutter ratios. By comparing the images obtained through the FDTD and Xpatch simulations, we show that both modeling methods achieve reasonable accuracy for this type of application. We also discuss two imaging formation techniques spotlight and strip-map and emphasize the differences in the resulting images. The existence of ghost images in a STTW scenario is explained by analyzing multipath propagation effects inside a room.

Subject Categories:

  • Computer Programming and Software
  • Military Operations, Strategy and Tactics
  • Miscellaneous Detection and Detectors
  • Active and Passive Radar Detection and Equipment
  • Electricity and Magnetism
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE