An Optimum Strategy for Producing Precise GPS Satellite Orbits using Double-Differenced Observations
نویسندگان
چکیده
منابع مشابه
Optimizing the Number of Double-Differenced Observations for GPS Networks in Support of Deformation Monitoring Applications
Deformation monitoring using GPS is usually carried out by installing and operating a local network of GPS receivers mounted on the deforming body, e.g. the flanks of a volcano. For continuous monitoring applications a near-realtime, epoch-by-epoch solution obtained from multibaseline processing is desired in order to take into account between-baseline correlations and to detect movements over ...
متن کاملOptimising the Number of Double-Differenced Observations for GPS Networks in Support of Deformation Monitoring Applications
Deformation monitoring using GPS is usually carried out by installing and operating a local network of GPS receivers mounted on the deforming body, e.g. the flanks of a volcano. For continuous monitoring applications a near-real-time, epoch-by-epoch solution obtained from multi-baseline processing is desired in order to take into account betweenbaseline correlations and to detect movements over...
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Precise Point Positioning (PPP) is currently based on the processing of only GPS observations. Its positioning accuracy, availability and reliability are very dependent on the number of visible satellites, which is often insufficient in the environments such as urban canyons, mountain and open-pit mines areas. Even in the open area where sufficient GPS satellites are available, the accuracy and...
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This paper utilizes a clustering approach based on Simulated Annealing (SA) method to select optimum satellite subsets from the visible satellites. Geometric Dilution of Precision (GDOP) is used as criteria of optimality. The lower the values of the GDOP number, the better the geometric strength, and vice versa. Not needing to calculate the inverse matrix, which is time-consuming process, is a ...
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Carrier phase measurements are primary observations for GPS attitude determination. Although the satelliterelated errors can be virtually eliminated by forming single differences, the baseline-related errors, such as line biases, are still present in the single-differenced carrier phase measurements. It is, therefore, difficult to resolve the single-differenced integer ambiguities due to the li...
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ژورنال
عنوان ژورنال: Journal of Engineering
سال: 2018
ISSN: 2520-3339,1726-4073
DOI: 10.31026/j.eng.2018.09.08