Robust precision navigation using carrier-phase differential GPS
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منابع مشابه
Performance Analysis of Carrier-Phase DGPS Navigation for Shipboard Landing of Aircraft
Shipboard-relative GPS (SRGPS) is a variant of the Joint Precision Approach and Landing System (JPALS) that is being developed to support automatic shipboard landings in zero-visibility conditions. At present, the navigation system requirements specify a vertical protection level of 1.1 m, an integrity risk of approximately 10 7, and a system availability of at least 99.7 percent. Because of th...
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In the Joint Precision Approach and Landing System (JPALS) both the differential GPS reference station and the airborne user will employ Controlled Reception Pattern Array (CRPA) antennas. In a high precision system such as JPALS, CRPA antennas may suffer phase center biases that introduce significant integrity risk. These phase center biases result from both hardware design and from algorithm ...
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A modified Code Noise and Multipath (CNMP) algorithm is presented for dual-frequency differential GPS precision approach and landing. Pseudorange noise and multipath are exchanged for reducible biases in both reference station and aircraft ranging measurements. The second frequency is used only to correct the code-minus-carrier observable. Corrected pseudorange measurements are combined using a...
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