Abstract
A method and apparatus is provided for intra-PIT signal decomposition of a signal received with RF front end hardware. The method begins by aligning a signal received by RF front end hardware into integer multiples of a duration of a pseudorandom noise code sequence. A search grid is computed based on an integer multiple of the aligned signal. A plurality of initial ray parameters associated with the computed search grid is coarsely estimated. Using the coarsely estimated plurality of initial ray parameters, a fine estimation of the plurality of initial ray parameters is initiated utilizing stochastic search and optimization techniques. A stopping criteria statistic is computed by comparing a peak power of the search grid with a noise power present in the search grid. Finally, in response to determining the stopping criteria statistic being less than a stopping criteria threshold, processing a next integer multiple of the aligned signal.
Document Type
Patent
Status
Issued
Issue Date
5-5-2015
Patent Number
US 9025640 (B2) [ 9,025,640 ]
CPC Classification
H04B1/707
Application number
13/915,649
Assignees
United States of America, as represented by the Secretary of the Air Force, Washington, DC (US)
Filing Date
6-12-2013
Recommended Citation
Haker, Marshall E., and John F. Raquet. Global Navigation Satellite System Signal Decomposition and Parameterization Algorithm. United States Patent 9025640, issued 5 May 2015. https://scholar.afit.edu/patents/16