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Title: Radar velocity determination using direction of arrival measurements

Abstract

The various technologies presented herein relate to utilizing direction of arrival (DOA) data to determine various flight parameters for an aircraft A plurality of radar images (e.g., SAR images) can be analyzed to identify a plurality of pixels in the radar images relating to one or more ground targets. In an embodiment, the plurality of pixels can be selected based upon the pixels exceeding a SNR threshold. The DOA data in conjunction with a measurable Doppler frequency for each pixel can be obtained. Multi-aperture technology enables derivation of an independent measure of DOA to each pixel based on interferometric analysis. This independent measure of DOA enables decoupling of the aircraft velocity from the DOA in a range-Doppler map, thereby enabling determination of a radar velocity. The determined aircraft velocity can be utilized to update an onboard INS, and to keep it aligned, without the need for additional velocity-measuring instrumentation.

Inventors:
; ; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1414409
Patent Number(s):
9,846,229
Application Number:
14/645,131
Assignee:
National Technologies & Engineering Solutions of Sandia, LLC (Albuquerque, NM) SNL-A
DOE Contract Number:
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 Mar 11
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Doerry, Armin W., Bickel, Douglas L., Naething, Richard M., and Horndt, Volker. Radar velocity determination using direction of arrival measurements. United States: N. p., 2017. Web.
Doerry, Armin W., Bickel, Douglas L., Naething, Richard M., & Horndt, Volker. Radar velocity determination using direction of arrival measurements. United States.
Doerry, Armin W., Bickel, Douglas L., Naething, Richard M., and Horndt, Volker. Tue . "Radar velocity determination using direction of arrival measurements". United States. doi:. https://www.osti.gov/servlets/purl/1414409.
@article{osti_1414409,
title = {Radar velocity determination using direction of arrival measurements},
author = {Doerry, Armin W. and Bickel, Douglas L. and Naething, Richard M. and Horndt, Volker},
abstractNote = {The various technologies presented herein relate to utilizing direction of arrival (DOA) data to determine various flight parameters for an aircraft A plurality of radar images (e.g., SAR images) can be analyzed to identify a plurality of pixels in the radar images relating to one or more ground targets. In an embodiment, the plurality of pixels can be selected based upon the pixels exceeding a SNR threshold. The DOA data in conjunction with a measurable Doppler frequency for each pixel can be obtained. Multi-aperture technology enables derivation of an independent measure of DOA to each pixel based on interferometric analysis. This independent measure of DOA enables decoupling of the aircraft velocity from the DOA in a range-Doppler map, thereby enabling determination of a radar velocity. The determined aircraft velocity can be utilized to update an onboard INS, and to keep it aligned, without the need for additional velocity-measuring instrumentation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 19 00:00:00 EST 2017},
month = {Tue Dec 19 00:00:00 EST 2017}
}

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