Patent ID: 6570531
Filing Date: 2003-05-27
Classification: G01S

Abstract:
A satellite navigation receiver landing system providing PVT output data, the satellite navigation receiver landing system comprising:antenna means adapted to receive satellite signals transmitted from a plurality of satellites; radio frequency circuitry coupled to the antenna means and adapted to convert the satellite signals into intermediate signals; a primary processing channel coupled to the radio frequency circuitry and adapted to generate a primary position, velocity and time (PVT) solution as a function of the intermediate signals, the primary processing channel providing the PVT output data; a monitor processing channel coupled to the radio frequency circuitry and adapted to generate a monitor PVT solution as a function of the intermediate signals; a primary monitor function coupled to the primary and monitor processing channels and providing primary monitor output signals as a function of the primary and monitor PVT solutions, the primary monitor output signals including monitor status indicators and a shutdown signal to maintain a position error and to provide the shutdown signal when the position error is exceeded; a monitor channel monitor function coupled to the primary and monitor processing channels and providing monitor channel monitor output signals as a function of the primary and monitor PVT solutions, the monitor channel monitor output signals including monitor status indicators and a shutdown signal to maintain a position error and to provide the shutdown signal when the position error is exceeded; and shutdown circuitry controllably providing the primary PVT solution to the PVT data output, wherein the shutdown circuitry provides the primary PVT solution to the PVT data output as a function of the shutdown signals.