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GPS Anti Jamming Techniques

G-STAR Spatial Temporal Adaptive Processing (STAP)

Lockheed Martin

A new anti-jamming countermeasure uses Spatial Temporal Adaptive Processing (STAP) also known as G-STAR. This process allows a system to remove significantly more interfering sources than conventional systems as it discriminates between narrowband and broadband interference. Narrowband signals are dealt with individually while broadband signals can be eliminated due to their uniform profile. G-STAR anti-jamming technology is employing STAP techniques by placing nulls in the direction of the interference sources, while steering beams toward targeted satellites for optimal signal reception, therefore optimizing solutions to every GPS satellite. The latest military GPS receivers have also been equipped with Selective Availability and Anti-Spoofing Module (SAASM), which enables them to operate with encrypted precision satellite signals. The first G-STAR SAASM application was introduced in the US Air Force JASSM cruise missile.




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  Updated: 01/26/2005



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