GPS receiver with extended security

Details GPS receiver with extended security GPS receiver with extended security

1998-07-29

2000-03-14

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

34235712, 701214, H04B 7185, G01S 502

Patent

active

060379006

ABSTRACT:
A spread spectrum receiver uses a SAASM module to provide a non-secure point position solution from signals received from GPS satellites. The point position solution is converted to a set of synthetic satellite position and range information by synthesizing a set of satellite position and range data that would have produced the same point position solution from a hypothetical set of satellites in a predetermined constellation, such as four satellites at right angles to each other. The synthetic satellite position and range information preserves the navigation information produced by the SAASM receiver without compromising the security of the protected data.

REFERENCES:
patent: 5903654 (1999-05-01), Milton et al.

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