Results 51 to 60 of about 10,102,394 (160)

Generalized Likelihood Ratio Test for GNSS Spoofing Detection in Devices with IMU

open access: yes, 2021
Spoofing attacks in global navigation satellite systems (GNSSs) aim at inducing the estimation of a fake position at the victim receiver. Many devices, including smartphones, are nowadays equipped with both a GNSS receiver and an inertial measurement ...
Formaggio F.   +3 more
core   +1 more source

An Improved GLRT Method for Target Detection in SAR Imagery

open access: yesMATEC Web of Conferences, 2015
Automatic ground vehicle detection based on SAR imagery is one of the important military applications of SAR. A region-based generalized likelihood ratio test (GLRT) method is proposed in this paper, and this method combines the GLRT detection theory and
Ju Yingyun   +3 more
doaj   +1 more source

Detection of Unresolved Targets for Wideband Monopulse Radar

open access: yesSensors, 2019
Detecting unresolved targets is very important for radars in their target tracking phase. For wideband radars, the unresolved target detection algorithm should be fast and adaptive to different bandwidths.
Tianyi Tsai   +4 more
doaj   +1 more source

Multispectral Properties of Rocks in Marker Band Valley and Evidence for an Alteration Unit Below the Amapari Marker Band at Gale Crater, Mars

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract The Mars Science Laboratory rover, Curiosity, has been examining strata from a period of Martian history where extensive clay mineral formation transitioned to sulfate mineral formation. This mineralogic change corresponds to a change from a wetter to a more arid climate.
W. H. Farrand   +12 more
wiley   +1 more source

Adaptive Waveform Design with Multipath Exploitation Radar in Heterogeneous Environments

open access: yesRemote Sensing, 2021
The problem of detecting point like targets over a glistening surface is investigated in this manuscript, and the design of an optimal waveform through a two-step process for a multipath exploitation radar is proposed.
Seden Hazal Gulen Yilmaz   +3 more
doaj   +1 more source

Adaptive Moving Target Detection for Forward Scatter Radar When the Noise Power Mismatch Occurs

open access: yesElectronics Letters, Volume 61, Issue 1, January/December 2025.
1. The problem of detecting moving targets with forward scatter radar is discussed. 2. The noise power mismatch, namely, the noise power in the secondary data and the noise power in the primary data differing by a noise‐scaling factor, is considered. 3.
Xiang Li, Zeyu Wang
wiley   +1 more source

The multifamily likelihood ratio test for multiple signal model detection

open access: yes, 2005
The generalized likelihood ratio test (GLRT) is a standard tool for designing signal detectors. It produces detectors that perform well when the signal model is known, except for a fixed set of signal parameters.
Kay, Steven M.
core   +1 more source

A 3D Imaging Method for UAV Swarm Polarimetric SAR Based on Joint Sparse and Low‐Rank Structure Constraints

open access: yesIET Image Processing, Volume 19, Issue 1, January/December 2025.
We designed a distributed UAV swarm SAR observation architecture that deploys multiple UAV‐borne SAR systems in the three‐dimensional space around the target scene. Each node operates in a monostatic mode, which not only reduces synchronization requirements but also provides robustness against single‐node failure.
Wei Li   +5 more
wiley   +1 more source

Likelihood-ratio test.

open access: yes, 2021
Likelihood-ratio test.
Petr Mariel (5499164)   +2 more
core   +1 more source

Censored Distributed Space-Time Coding for Wireless Sensor Networks

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
We consider the application of distributed space-time coding in wireless sensor networks (WSNs). In particular, sensors use a common noncoherent distributed space-time block code (DSTBC) to forward their local decisions to the fusion center (FC) which ...
R. Schober, S. Yiu
doaj   +1 more source

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