Results 31 to 40 of about 45,007 (228)

Probability of detection for a GO CFAR radar processor using envelope detection approximation

open access: closed, 1994
The greatest-of logic for a constant false alarm rate processor (GO CFAR) is a commonly used method for the adaptive setting of a radar detection threshold in the presence of clutter edges. Instead of using a true envelope detector x = I2 + Q2, which is difficult to implement, envelope detection approximations of the form Xe = aMax (I),(Q) + bMin (I ...
Joseph Jean Pierre Hache
openalex   +2 more sources

PDF-Euclidean Distance-Based Adaptive Waveform Selection for Maximizing Radar Practical Resolution

open access: yesIEEE Access, 2019
This paper focuses on the issue of adaptive waveform selection to optimize the radar resolvability of closely located targets, which is significant in radar detection and estimation.
Chengcheng Si, Bo Peng, Xiang Li
doaj   +1 more source

Constraint Waveform Design for Spectrum Sharing Under Coexistence of Radar and Communication Systems

open access: yesIEEE Access, 2021
Waveform design and spectrum sharing between Multiple Input Multiple Output (MIMO) radar and MIMO communication system is an optimization problem that has been typically addressed in literature with two-dimensional formalism involving radius and azimuth ...
Suleman Mir   +3 more
doaj   +1 more source

Controls on ERS altimeter measurements over ice sheets: Footprint-scale topography, backscatter fluctuations, and the dependence of microwave penetration depth on satellite orientation [PDF]

open access: yes, 2004
We consider the reliability of radar altimeter measurements of ice sheet elevation and snowpack properties in the presence of surface undulations. We demonstrate that over ice sheets the common practice of averaging echoes by aligning the first return ...
Arthern, RJ, Ridout, AL, Wingham, DJ
core   +1 more source

Special aspects of modulation RCS measurement in Ka-band [PDF]

open access: yesITM Web of Conferences, 2019
Radar reflectors are used as standards for radioelectronic devices calibration, as navigation beacons for air and naval traffic control and for radar visibility increase. Controlled (parametric) reflectors change reflected signal characteristics.
Kryuchkov Igor V.   +2 more
doaj   +1 more source

Scattering statistics of rock outcrops: Model-data comparisons and Bayesian inference using mixture distributions [PDF]

open access: yes, 2019
The probability density function of the acoustic field amplitude scattered by the seafloor was measured in a rocky environment off the coast of Norway using a synthetic aperture sonar system, and is reported here in terms of the probability of false ...
Anthony P. Lyons   +16 more
core   +2 more sources

Subinteger Range-Bin Alignment Method for ISAR Imaging of Noncooperative Targets

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
Inverse Synthetic Aperture Radar (ISAR) is a coherent radar technique capable of generating images of noncooperative targets. ISAR may have better performance in adverse meteorological conditions than traditional imaging sensors.
Pérez-Martínez F   +1 more
doaj   +2 more sources

Vital-Signs Detector Based on Frequency-Shift Keying Radar

open access: yesSensors, 2020
A frequency-shift keying (FSK) radar in the 2.45-GHz band is proposed for highly accurate vital-signs detection. The measurement accuracy of the proposed detector for the heartbeat is increased by using the cross-correlation between the phase differences
Jae Young Sim   +2 more
doaj   +1 more source

Feature Extraction for Moving Targets Based on the Statistical Characteristics of Echo Amplitude with the L-Band Fully Polarimetric Radar

open access: yesRemote Sensing, 2022
Non-imaging radar can achieve the detection and localization of moving targets, but it faces difficulties in the classification of targets. Aiming for the application of moving target classification by low/medium resolution non-imaging radar, this paper ...
Chuang Zhang   +13 more
doaj   +1 more source

Noncontact Detection of Respiration Rate Based on Forward Scatter Radar

open access: yesSensors, 2019
Bioradar-based noncontact breathing detection technology has been widely studied due to its superior detection performance. In this paper, a breath detection mechanism based on the change in radar cross section (RCS) is proposed by using a forward ...
Fan Yang   +5 more
doaj   +1 more source

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