Results 21 to 30 of about 125,732 (287)

Time-Delay Multiplexing of Two Beams in a Terahertz Imaging Radar [PDF]

, 2010
We demonstrate a time-delay multiplexing technique that doubles the frame rate of a 660–690-GHz imaging radar with minimal additional instrument complexity.
Bryllert, Tomas, Chattopadhyay, Goutam, Cooper, Ken B., Dengler, Robert J., Llombart, Nuria, Siegel, Peter H.   +5 more
core   +1 more source

Knowledge-Aided STAP Using Low Rank and Geometry Properties [PDF]

, 2013
This paper presents knowledge-aided space-time adaptive processing (KA-STAP) algorithms that exploit the low-rank dominant clutter and the array geometry properties (LRGP) for airborne radar applications.
de Lamare, Rodrigo C., Li, Xiang, Wang, Hongqiang, Yang, Zhaocheng   +3 more
core   +2 more sources

Some thoughts on the use of InSAR data to constrain models of surface deformation: Noise structure and data downsampling [PDF]

, 2005
Repeat-pass Interferometric Synthetic Aperture Radar (InSAR) provides spatially dense maps of surface deformation with potentially tens of millions of data points. Here we estimate the actual covariance structure of noise in InSAR data.
Lohman, Rowena B., Simons, Mark
core   +2 more sources

On the Analysis of PM/FM Noise Radar Waveforms Considering Modulating Signals with Varied Stochastic Properties

Sensors, 2021
Noise Radar technology is the general term used to describe radar systems that employ realizations of a given stochastic process as transmit waveforms. Originally, carriers modulated in amplitude by a Gaussian random signal, derived from a hardware noise
Leandro Pralon, Gabriel Beltrao, Alisson Barreto, Bruno Cosenza   +3 more
doaj   +1 more source

Automatic LPI Radar Signal Sensing Method Using Visibility Graphs

IEEE Access, 2020
The issue of the low probability of intercept (LPI) radar signal sensing has received considerable attention. Furthermore, the development of military technology further increased demand for it in future electronic warfare (EW).
Tao Wan, Kaili Jiang, Yanli Tang, Ying Xiong, Bin Tang   +4 more
doaj   +1 more source

Radar Signal Modulation Recognition Based on Sep-ResNet

Sensors, 2021
With the development of signal processing technology and the use of new radar systems, signal aliasing and electronic interference have occurred in space.
Yongjiang Mao, Wenjuan Ren, Zhanpeng Yang   +2 more
doaj   +1 more source

Penetrating 3-D Imaging at 4- and 25-m Range Using a Submillimeter-Wave Radar [PDF]

, 2008
We show experimentally that a high-resolution imaging radar operating at 576–605 GHz is capable of detecting weapons concealed by clothing at standoff ranges of 4–25 m.
Bryllert, Tomas, Chattopadhyay, Goutam, Cooper, Ken B., Dengler, Robert J., Gill, John, Lee, Choonsup, Llombart, Nuria, Mehdi, Imran, Schlecht, Erich, Siegel, Peter H., Skalare, Anders   +10 more
core   +1 more source

Chirp Signals and Noisy Waveforms for Solid-State Surveillance Radars

Aerospace, 2017
Since the advent of “pulse compression” radar, the “chirp” signal (Linear Frequency Modulation, LFM) has been one of the most widely used radar waveforms.
Gaspare Galati, Gabriele Pavan, Francesco De Palo   +2 more
doaj   +1 more source

MIMO Radar Waveform Optimization With Prior Information of the Extended Target and Clutter [PDF]

, 2009
The concept of multiple-input multiple-output (MIMO) radar allows each transmitting antenna element to transmit an arbitrary waveform. This provides extra degrees of freedom compared to the traditional transmit beamforming approach.
Chun-yang Chen, P. P. Vaidyanathan, Student Member   +2 more
core   +2 more sources

Incorporation of Digital Modulation into Vital Sign Detection and Gesture Recognition Using Multimode Radar Systems

Sensors, 2023
The incorporation of digital modulation into radar systems poses various challenges in the field of radar design, but it also offers a potential solution to the shrinking availability of low-noise operating environments as the number of radar ...
Michael C. Brown, Changzhi Li
doaj   +1 more source