Results 211 to 220 of about 23,492 (260)

The CNN-SE-LSTM Model for Phase Interferometer Ambiguity Resolution

IEEE Signal Processing Letters
Zhenyu Dong, Ding Wang 0003, Jiexin Yin, Zeyu Wang   +3 more
openaire   +3 more sources

Phase ambiguity resolution in trellis-coded modulations

IEEE Transactions on Communications, 1990
A rotation detection algorithm for solving the phase ambiguity problem in trellis-coded modulations is proposed. This algorithm is simple to implement and may be an efficient alternative to rotationally invariant codes. Its performance has been investigated by simulation and appears promising. >
U. Mengali, A. Sandri, SPALVIERI, ARNALDO   +2 more
openaire   +2 more sources

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
openaire   +2 more sources

Code-aided frame synchronization and phase ambiguity resolution

IEEE Transactions on Signal Processing, 2006
This 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, Heidi Steendam, Herwig Bruneel, Marc Moeneclaey   +3 more
openaire   +1 more source

LDPC Code Aided Phase Ambiguity Resolution

2007 Information, Decision and Control, 2007
Low-density parity-check codes (LDPC) are known to perform close to the Shannon limit as the block length increases. Residual frequency offsets make iterative decoding difficult for longer block lengths. Sub-block decoding techniques provide a practical, low-complexity approach to deal with residual frequency offsets.
Sridhar Karuppasami, William G. Cowley
openaire   +1 more source

The effect of the antenna phase response on the ambiguity resolution

2008 IEEE/ION Position, Location and Navigation Symposium, 2008
In order to get the best performance from carrier phase -based GNSS positioning methods in terms of accuracy and reliability the factors affecting the signal propagation must be characterized accurately. These carrier phase -based methods include precise point positioning (PPP) as well as real-time kinematic (RTK).
Lauri Wirola, Ilkka Kontola, Jari Syrjarinne   +2 more
openaire   +1 more source

Phase-Ambiguity Resolution in a Four-Phase PSK Communications System

IEEE Transactions on Communication Technology, 1971
The constraints of digital satellite communications systems have led to the derivation of a method for resolving the problem of recovered-carrier phase ambiguity in a coherent fourphase phase-shift-keying (PSK) communications system while simultaneously providing synchronization information.
E. Cacciamani, C. Wolejsza
openaire   +1 more source

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.
openaire   +2 more sources

Schreiber approach for GPS carrier phase ambiguity resolution

Wuhan University Journal of Natural Sciences, 2003
Differenced GPS carrier phase observations are usually used in GPS positioning to eliminate the various common GPS errors. A different approach is proposed in this paper where no differencing of the observations is required. In this method, the common GPS errors are modelled explicidy and eliminated by introducing the Schreiber method, which is used in
Zhu Jian-jun, Ding Xiao-li, Chen Yong-qi
openaire   +1 more source

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.
openaire   +2 more sources