GPS Carrier-Phase Time Transfer Using Single-Difference Integer Ambiguity Resolution
نویسندگان
چکیده
منابع مشابه
Efficiency of carrier-phase integer ambiguity resolution for precise GPS positioning in noisy environments
Precise GPS positioning relies on tracking the carrier-phase. The fractional part of carrier-phase can be measured directly using a standard phase-locked loop, but the integer part is ambiguous and theambiguity must be resolved based on sequential carrier-phasemeasurements to ensure the required positioning precision. In the presence of large phase-measurement noise, as can be expected in a jam...
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Abstract In this paper, a new motion-based approach for Global Positioning System (GPS) integer ambiguity resolution is derived. The approach first represents the GPS sightline vectors in the body frame or the baseline vectors in the reference frame. The solution to this problem is always available as long as at least three non-coplanar baseline or sightline vectors exist. The body-frame sightl...
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The wide application of GPS carrier-phase (CP) time transfer is limited by the problem of boundary discontinuity (BD). The discontinuity has two categories. One is “day boundary discontinuity,” which has been studied extensively and can be solved by a few methods [1–5]. The other category of discontinuity, called “anomaly boundary discontinuity (anomaly-BD),” comes from a GPS-measurements data ...
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This paper studies the impact of GPS jamming on GPS carrier-phase time transfer. To study this issue, at NIST, we have installed a commercial GPS jamming detector since 2014 April. During 2014 April – 2015 April, the detector detected more than 100 jamming events, though there had been a few outages of jamming detection. The jamming events usually last for less than 2 min. We find that almost a...
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Global positioning system (GPS) data processing algorithms typically improve positioning solution accuracy by fixing double-differenced phase bias ambiguities to integer values. These “double-difference ambiguity resolution” methods usually invoke linear combinations of GPS carrier phase bias estimates from pairs of transmitters and pairs of receivers, and traditionally require simultaneous mea...
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ژورنال
عنوان ژورنال: International Journal of Navigation and Observation
سال: 2008
ISSN: 1687-5990,1687-6008
DOI: 10.1155/2008/273785