Title: Shaping the spectrum of random-phase radar waveforms

Abstract

The various technologies presented herein relate to generation of a desired waveform profile in the form of a spectrum of apparently random noise (e.g., white noise or colored noise), but with precise spectral characteristics. Hence, a waveform profile that could be readily determined (e.g., by a spoofing system) is effectively obscured. Obscuration is achieved by dividing the waveform into a series of chips, each with an assigned frequency, wherein the sequence of chips are subsequently randomized. Randomization can be a function of the application of a key to the chip sequence. During processing of the echo pulse, a copy of the randomized transmitted pulse is recovered or regenerated against which the received echo is correlated. Hence, with the echo energy range-compressed in this manner, it is possible to generate a radar image with precise impulse response.

Inventors:

Doerry, Armin W.; Marquette, Brandeis

Issue Date:

2017-05-09

Research Org.:

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1356230

Patent Number(s):

9,645,228

Application Number:

14/102,928

Assignee:

Sandia Corporation

DOE Contract Number:  

AC04-94AL85000

Resource Type:

Patent

Resource Relation:

Patent File Date: 2013 Dec 11

Country of Publication:

United States

Language:

English

Subject:

99 GENERAL AND MISCELLANEOUS; 47 OTHER INSTRUMENTATION