Results 21 to 30 of about 456,541 (295)
IEEE Access, 2021 For scenarios of coherent underwater sources at low signal-to-noise ratio (SNR), a novel quaternion-based DOA algorithm without eigendecomposition is proposed using a linear vector-hydrophone array.
Yi Lou +3 more
doaj +1 more source
IEEE Access, 2019 The sparse reconstruction techniques can improve the accuracy and resolution of the direction of arrival (DOA) estimation using sensor arrays. However, due to reflective objects and nonidealities of the antennas and circuitry, the received signals may be
Yuexian Wang +4 more
doaj +1 more source
On blind searches for noise dominated signals: a loosely coherent approach [PDF]
, 2010 We introduce a ‘loosely coherent’ method for detection of continuous gravitational waves that bridges the gap between semi-coherent and purely coherent methods.
Dergachev, V.
core +1 more source
Coherence of early motion signals
Vision Research, 2001 Oscillation thresholds were evaluated for detecting motion and discriminating relative motion. Three horizontally aligned Gaussian blobs oscillated horizontally, with the center in-phase or out-of-phase with the two flankers. Motion thresholds were well below those for static bisection, and involved small contrast changes (
Lappin, Joseph S +2 more
openaire +2 more sources
Theoretical performance comparison between reference-based coherent BPSK and BCH coded differential BPSK [PDF]
, 1992 Both channel sounding and channel coding are well-known techniques for improving bit error rate (BER) performance of data transmission over a narrowband mobile radio channel.
Bateman, A, Li, M, McGeehan, JP
core +2 more sources
Sensors, 2013 A unitary transformation-based algorithm is proposed for two-dimensional (2-D) direction-of-arrival (DOA) estimation of coherent signals. The problem is solved by reorganizing the covariance matrix into a block Hankel one for decorrelation first and then
Chengpeng Hao +3 more
doaj +1 more source
Entropy, 2023 Direction of arrival (DOA) estimation is an important research topic in array signal processing and widely applied in practical engineering. However, when signal sources are highly correlated or coherent, conventional subspace-based DOA estimation ...
Jiang’an Dai +4 more
doaj +1 more source
Loosely coherent searches for sets of well-modeled signals [PDF]
, 2011 We introduce a high-performance implementation of a loosely coherent statistic sensitive to signals spanning a finite-dimensional manifold in parameter space.
B. F. Schutz, V. Dergachev
core +2 more sources
Frontiers in Physics, 2020 Due to the limitation of analog-to-digital/digital-to-analog converters, photonics-assisted channelized receivers are thought to be a promising approach to receiving wideband microwave signals.
Huan Huang +8 more
doaj +1 more source
Sensors, 2022 To address the problems of low accuracy and low robustness of the conventional algorithm in estimating the direction of arrival (DOA) of coherent signals against a composite background of strong interference and non-uniform noise, in this paper, a ...
Bin Lin +3 more
doaj +1 more source