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Code-aided frame synchronization and phase ambiguity resolution
IEEE Transactions on Signal Processing, 2006This contribution deals with two hypothesis testing problems for digital receivers: frame synchronization and phase ambiguity resolution. As current receivers use powerful error-correcting codes and operate at low signal-to-noise ratio (SNR), these problems have become increasingly challenging: one is forced either to waste a part of the bandwidth on ...
Henk Wymeersch +3 more
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Terahertz multiwavelength phase imaging without 2π ambiguity
Optics Letters, 2006We present a terahertz phase imaging method with multiwavelengths. This novel approach can image an object with a larger optical length compared with using the largest wavelength in the terahertz spectrum and does not involve the usual phase unwrapping in the detection of phase discontinuity. Furthermore, this technique can effectively reduce the noise
Liangliang, Zhang +4 more
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GPS carrier phase ambiguity fixing concepts
1998High precision relative GPS positioning is based on the very precise carrier phase measurements. A prerequisite for obtaining high precision relative positioning results is that the double-differenced carrier phase ambiguities become sufficiently separable from the baseline coordinates. Different approaches are in use and have been proposed to ensure a
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Phase Height and the Ionospheric Valley Ambiguity
Radio Science, 1966We consider whether a unique ionospheric electron density distribution can be calculated from ionograms in the case of a “valley” between the E and F regions, assuming that the absolute phase heights are available in addition to the virtual heights. By using the concept of an “equivalent distribution” it is shown that the additional knowledge of phase ...
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Phase direction finder ambiguity resolution
RadioengineeringModern phase direction finding means, in particular passive direction finding means, must ensure the formation of direction finding data from radar sources, while the bearing accuracy must be maintained over a wide frequency range. As is known, in order to achieve high accuracy of direction finding, the distance between the receiving antennas must ...
D.V. Bokhovkin +4 more
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The Ambiguous Strategy of JP's Last Phase
2017Internationales Asienforum, Bd. 13 Nr.
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Carrier Phase Integer Ambiguity Resolution
2017Global Navigation Satellite System (GNSS ) carrier-phase integer ambiguity resolution is the process of resolving the carrier-phase ambiguities as integers. It is the key to fast and high-precision GNSS parameter estimation and it applies to a great variety of GNSS models that are currently in use in navigation, surveying, geodesy and geophysics.
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A New Rapid Integer Ambiguity Resolution of GNSS Phase-Only Dynamic Differential Positioning
IEEE Geoscience and Remote Sensing Letters, 2022Xiao Liang +2 more
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