Accession Number:

ADA188227

Title:

Nearfield Detection of a Crossing Target in Clutter

Descriptive Note:

Interim rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

• Broder, Bruce

Report Date:

1987-11-27

Pagination or Media Count:

12.0

Abstract:

The detection of a crossing target in the nearfield in Gaussian clutter is explored. The relative phase shifts across antenna elements are nonlinear functions of the geometry and change through time. Consequently, crossing targets in the nearfield exhibit a changing phase called spatial Doppler and can be separated from the highly correlated clutter. By using two examples, the signal-to-noise ration is shown to be significantly enhanced for the crossing target in clutter.

Descriptors:

• *ANTENNA COMPONENTS
• *CROSSINGS
• *DETECTION
• *DOPPLER SYSTEMS
• *TARGETS
• FUNCTIONS(MATHEMATICS)
• NEAR FIELD
• PHASE SHIFT
• SPATIAL DISTRIBUTION

Subject Categories:

• Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE