DECUR
Research/Patents/US 5327141
US 5327141Tier 1 — UAP Program Assignee

CLUTTER REMOVAL BY POLYNOMIAL COMPENSATION

Assignee

Raytheon

Filed as: RAYTHEON COMPANY, A CORP. OF DE.

Filed

Nov 6, 1986

Granted

Jul 5, 1994

Location

LEXINGTON MA US

Abstract

Apparatus and method for removing unwanted components of a signal received from a radar transmitter. The unwanted components lie in a clutter Doppler frequency band. Such components are removed by first sampling the received signal at a rate sufficient to cause components of the received signal in the clutter Doppler frequency band to be validly sampled and components of the received signal in a desired target Doppler frequency band to be invalidly sampled. A signal equivalent to the values of a polynomial fit to this sampled signal then provides an estimate of the unwanted clutter components. This estimate is subtracted from the original received signal to provide a signal with the unwanted clutter components removed. A significant improvement in receiver sensitivity as well as a reduction in dynamic range requirements of a post detection digital signal processor is achieved through the use of this invention.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Mar 25, 1987

Rescinded

Feb 22, 1994

Duration

6 years, 11 months

Inventor

  • 1EDWARD J. SHELDON

Technology Domains

Sensors

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External Sources

Google Patents — US 5327141USPTO Full Patent (PDF)Browse active SO patents

Record Details

Patent number
US 5327141
Application
06927612
Aerospace match
Yes
Dataset source
35 USC §181 SO records

Browse by Assignee

Raytheon
Back to patent indexSource: USPTO 35 USC §181 secrecy order records