Results 81 to 90 of about 7,204,358 (165)

Moving Target Detection Based on the Spreading Characteristics of SAR Interferograms in the Magnitude-Phase Plane

Remote Sensing, 2015
We propose a constant false alarm rate (CFAR) algorithm for moving target detection in synthetic aperture radar (SAR) images based on the spreading characteristics of interferograms on the magnitude-phase (M-P) plane.
Gui Gao, Gongtao Shi, Lei Yang, Shilin Zhou   +3 more
doaj   +1 more source

Performance of the adaptive generalised subspace constant false alarm rate detector in non-Gaussian noise: an experimental analysis

, 2009
The authors deal with the performance analysis of an adaptive version of the generalised matched subspace detector (GMSD) in compound-Gaussian clutter with unknown covariance matrix.
A. YOUNSI, A. ZOUBIR, GRECO, MARIA, GINI, FULVIO   +3 more
core   +1 more source

GLRT‐based compressive subspace detectors in single‐frequency multistatic passive radar systems

IET Radar, Sonar & Navigation
The authors study the problem of compressive target detection in a single‐frequency network (SFN)‐based multistatic passive radar system (MS‐PRS) consisting of multiple illuminators of opportunity (IOs) and one receiver. Firstly, a generalised likelihood
Junhu Ma, Jixiang Zhao, Jianyu Wang, Tianchen Liang   +3 more
doaj   +1 more source

First Spaceborne SAR-GMTI Experimental Results for the Chinese Gaofen-3 Dual-Channel SAR Sensor

Sensors, 2017
In spaceborne synthetic aperture radar (SAR) sensors, it is a challenging task to detect ground slow-moving targets against strong clutter background with limited spatial channels and restricted pulse repetition frequency (PRF).
Chenghao Wang, Guisheng Liao, Qingjun Zhang   +2 more
doaj   +1 more source

The Geometry of Signal Detection with Applications to Radar Signal Processing

Entropy, 2016
The problem of hypothesis testing in the Neyman–Pearson formulation is considered from a geometric viewpoint. In particular, a concise geometric interpretation of deterministic and random signal detection in the philosophy of information geometry is ...
Yongqiang Cheng, Xiaoqiang Hua, Hongqiang Wang, Yuliang Qin, Xiang Li   +4 more
doaj   +1 more source

Radar target detector based on banded sample autocovariance matrices

EURASIP Journal on Advances in Signal Processing
Detecting weak radar targets in complex cluttered environments remains a significant challenge, particularly when attempting to effectively detect low signal-to-clutter ratio (SCR) targets while maintaining a constant false alarm rate (CFAR).
Chang Qu, Xiaoying Wang, Jing Chen, Junping Yin, Jiang Hu, Zhigen Gao   +5 more
doaj   +1 more source

Closed-Form Solution for CFAR Detection Threshold in G⁰ Distributed SAR Clutter

IEEE Access
We devise a constant false alarm rate (CFAR) detector for detecting targets in clutter regions with varying degrees of heterogeneity. The CFAR detector employs the $\mathcal {G}^{0}$ distribution for characterizing the statistics of background ...
Dheeren Ku Mahapatra, Sourabh Paul, Biswajit Dwivedy, Alejandro C. Frery   +3 more
doaj   +1 more source

CFAR Detector Performance in Nonhomogeneous Interference Environments [PDF]

Wide-area search radar systems must reliably detect targets over a large region of interest while maintaining a low, constant false alarm rate. Constant false alarm rate (CFAR) detectors have been proposed in the literature, and they operate by ...
Roach, Samuel
core  

Improving Performance of GNSS Acquisition Systems by Optimizing TM-CFAR Thresholds Using Metaheuristics

Journal of Telecommunications and Information Technology
Signal acquisition is one of the key signal processing tasks performed by global navigation satellite system (GNSS) receivers. It involves detecting the presence or absence of a signal by comparing it with a predefined threshold, which can be either ...
Elbahdja Ourfella, Sabra Benkrinah, Naceur Aounallah   +2 more
doaj   +1 more source

BFAR : improving radar odometry estimation using a bounded false alarm rate detector

This work introduces a novel detector, bounded false-alarm rate (BFAR), for distinguishing true detections from noise in radar data, leading to improved accuracy in radar odometry estimation. Scanning frequency-modulated continuous wave (FMCW) radars can
Magnusson, Martin,, Andreasson, Henrik,, Lilienthal, Achim,, Adolfsson, Daniel,, Alhashimi, Anas,, Alhashimi, Anas ; Adolfsson, Daniel ; Andreasson, Henrik ; Lilienthal, Achim ; Magnusson, Martin   +5 more
core   +1 more source