Results 221 to 230 of about 58,862 (263)

Phase ambiguity resolution for orbit determination interferometry

2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2017
Peer ...
Fernández Usón, Marc, Martin Fuster, Roger, Broquetas Ibars, Antoni   +2 more
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Analysis of the ambiguity function for phase-coded waveforms

2015 IEEE/ACS 12th International Conference of Computer Systems and Applications (AICCSA), 2015
The phase codes is one of important pulse compression waveform methods. This paper shows and compares the PSLR (Peak Sidelobe Ratio), ISLR (Integrated Sidelobe Ratio) and doppler tolerance for different phase codes. At first, a presentation of the ambiguity function is given, as well as some measures to evaluate it.
Kaoutar Farnane, Khalid Minaoui, Awatif Rouijel, Driss Aboutajdine   +3 more
openaire   +1 more source

Phase ambiguities in higher dimensions

Il Nuovo Cimento B, 1983
By use of a Fourier-coefficient shift and subsequentz-transform, we employ the familiar process of replacing image trigonometric polynomials by polynomials in one or more variables. Among these polynomials we consider a «standard» type and define a «conjugation» on them. This conjugation has some of the same important properties as does the conjugation
openaire   +1 more source

Phase Recovery and the Ambiguity Function

Adaptive Optics: Analysis and Methods/Computational Optical Sensing and Imaging/Information Photonics/Signal Recovery and Synthesis Topical Meetings on CD-ROM, 2005
Various techniques for determining phase information are interpreted in terms of the ambiguity function. It is shown that this facilitates the comparison of different methods and promotes the development of novel phase retrieval schemes.
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Ambiguity function and phase space tomography for nonparaxial fields

Frontiers in Optics 2010/Laser Science XXVI, 2010
A nonparaxial generalization of the ambiguity function that retains several properties of its paraxial counterpart is presented, in both two and three dimensions. This generalization is used to extend into the nonparaxial regime a scheme for the recovery of the coherence properties of scalar partially coherent fields in two-dimensional space.
Seongkeun, Cho, Miguel A, Alonso
openaire   +2 more sources

Resolution of phase ambiguity in macromolecular crystallography

1985
Publisher Summary The chapter presents a procedure that is applicable to single isomorphous replacement (SIR) data without anomalous scattering information as well as to pure single-wavelength anomalous scattering (SAS) data alone, and it does not require the presence of noncrystallographic symmetry.
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Integer ambiguity resolution in phase closure imaging

Journal of the Optical Society of America A, 2001
Phase calibration is the key operation of phase closure imaging. In the case of nonredundant arrays, the related problem amounts to finding the node of a Z lattice closest to the end of a vector, the components of which are the differences between the closure phases of the data and those of the model.
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Elementary derivation of the minami phase shift ambiguity

Nuclear Physics, 1961
Abstract An elementary derivation is presented of the Minami phase shift ambiguity in the analysis of elastic scattering of a spin 1 2 particle by a spin 0 scattering centre.
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AMBIGUITIES IN PHASE-SHIFT ANALYSIS

1976
Publisher Summary This chapter examines ambiguities in phase-shift analysis. Two steps can be distinguished in the process of obtaining information on the basic dynamics in a scattering process from the experimentally measured quantities. The first step is the determination, starting from angular distributions, of all on-shell information, and the ...
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Improving detection of incorrect GPS carrier phase integer ambiguity solutions with the Ambiguity Filter

2016 International Conference on Localization and GNSS (ICL-GNSS), 2016
The Global Positioning System (GPS) can be used to estimate the attitude of a vehicle. To do this, multiple receivers should be used with the antennas in known fixed positions in the vehicle body frame. Since the estimation of the attitude angles needs high precision, the carrier phase measurements (with millimeter precision) are used in combination ...
Rita Pereira, José Sanguino
openaire   +1 more source