Accession Number:

ADA522643

Title:

Low-cost Electronically Scanning Antenna with Randomly Selected Delay Line Lengths

Descriptive Note:

Final rept.

Corporate Author:

ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE

Personal Author(s):

Report Date:

2010-06-01

Pagination or Media Count:

26.0

Abstract:

A radar architecture that requires a single analog-to-digital converter and no active phase shifters was developed that can electronically search a three-dimensional 3-D volume and provide range resolution and angular resolution proportional to the Rayleigh criterion for a given bandwidth and aperture size. The architecture is based on a frequency scanning antenna feed with delay lines whose lengths are randomly selected in combination with digital signal processing algorithms. I investigated the feasibility of the architecture to perform target localization in position and velocity by analyzing one-dimensional 1-D antenna patterns and graphing a cost function based on an L2-norm. A single realization of the system was selected, simulated, and analyzed. The range and velocity resolution seen in the plots of two-dimensional 2-D slices of the cost function are consistent with the position and velocity resolution derived from the Rayleigh criterion. For a low-cost solution, signals with Doppler shifts that exceed a given threshold should be transmitted to a central computer for more processing.

Subject Categories:

  • Economics and Cost Analysis
  • Electrical and Electronic Equipment
  • Active and Passive Radar Detection and Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE