Accession Number:

AD1132181

Title:

Near-Field Target Scattering Characterization and Radar Modeling

Descriptive Note:

[Technical Report, Technical Report]

Corporate Author:

U.S. Army Combat Capabilities Development Command ,Army Research Laboratory

Personal Author(s):

• Dogaru, Traian

Report Date:

2021-05-05

Pagination or Media Count:

30

Abstract:

This report develops near-field radar modeling techniques designed to produce the power-calibrated radar-received signal for arbitrary antennas and target configurations, based on computational electromagnetic simulations. The near-field radar cross-section concept is formulated together with its evaluation for simple-shape targets. Subsequently, we develop a general form of the radar equation that preserves the signals phase, the impact of near-field geometry, and the polarimetric coupling effects between the antenna patterns and target scattering. These concepts are brought together in a practical method of simulating complex near-field radar sensing scenarios with the AFDTD modeling software. Numerical validation examples are presented, emphasizing the differences between the near- and far-field radar operational regimes.

Descriptors:

• radar
• geometry
• radar sensing
• far field
• radar cross sections
• radar signals
• scattering
• synthetic aperture radar
• simulations
• radar equipment
• test and evaluation
• electromagnetic scattering
• equations
• near field
• radar antennas
• couplings
• electric fields
• frequency
• military research
• abstracts

Subject Categories:

• Active and Passive Radar Detection and Equipment

Distribution Statement:

[A, Approved For Public Release]