Results 81 to 90 of about 794,576 (207)

Target separation detection and motion parameter estimation method based on time-varying autoregressive model

open access: yesThe Journal of Engineering, 2019
The authors report a target separation detection and motion parameter estimation method based on the time-varying autoregressive (TVAR) model. The TVAR model is used to extract the instantaneous Doppler frequencies of multiple targets or scattering ...
Yaolin Zhang   +3 more
doaj   +1 more source

Discrete radar based on modulo arithmetic

open access: yesEURASIP Journal on Advances in Signal Processing
Zak-OTFS is a modulation scheme where signals are formed in the delay–Doppler (DD) domain, converted to the time domain (DD) for transmission and reception, then returned to the DD domain for processing.
Nishant Mehrotra   +4 more
doaj   +1 more source

Co-processor offloading applied to passive coherent location with Doppler and bearing data [PDF]

open access: yes, 2010
Includes abstract.Includes bibliographical references (leaf 76).This project dealt with the acceleration of an aircraft tracking algorithm using a ClearSpeed mathematical co-processor.
Milburn, Joe
core   +1 more source

Application of Micro-Doppler Signatures for Estimation of Total Energy Expenditure in Humans for Walking/Running Activities

open access: yesIEEE Access, 2016
We investigate the feasibility of estimating the total energy expenditure (TEE) of a human for walking/running activities with micro-Doppler signatures. Doppler radar can capture micro-Doppler signatures produced from limb motions when a human moves.
Youngwook Kim   +2 more
doaj   +1 more source

Human Micro-Doppler Frequency Estimation Approach for Doppler Radar

open access: yesIEEE Access, 2018
Micro-Doppler frequency estimation is an important issue for radar target recognition. In this paper, a novel approach is proposed to accurately estimate the micro-Doppler frequencies of specific target scattering parts, which can be very promising in real-time human sensing applications.
Yipeng Ding   +4 more
openaire   +2 more sources

Doppler compensation in forward-looking STAP radar

open access: yes, 2022
S.253-258For air- and spaceborne MTI radar the clutter Doppler frequency depends on range for all array geometries other than linear sidelooking. This applies particularly to forward-looking arrays.
Klemm, R., Kreyenkamp, O.
core   +1 more source

The Effect of Sea Surface Slicks on the Doppler Spectrum Width of a Backscattered Microwave Signal

open access: yesSensors, 2008
The influence of a surface-active substance (SAS) film on the Doppler spectrum width at small incidence angles is theoretically investigated for the first time for microwave radars with narrow-beam and knife-beam antenna patterns.
Eugeny Meshkov   +2 more
doaj  

A Multi-Source Radar Data Complementary Enhancement Generation Method Based on Diffusion Model

open access: yesRemote Sensing
Multi-source radar data fusion has become increasingly vital for advancing weather monitoring and forecasting. However, effectively integrating Doppler radar with an X-band phased-array radar remains challenging.
Yuan Peng   +4 more
doaj   +1 more source

Doppler-Spread Clutter Suppression in Single-Channel Noise Radar

open access: yes, 2022
S.881-883Continuous emission noise radars suffer from the problem of reduced sensitivity due to masking effects caused by the side-lobes of direct signal leakage, clutter returns and echoes of close targets.
Worms, Josef   +4 more
core   +1 more source

Techniques for homodyne dechirp-on-receive linearly frequency modulated radar [PDF]

open access: yes, 2011
This thesis presents work done to extend and improve the operation of homodyne dechirp-on-receive linearly frequency modulated radars. First, an investigation of the effect of common phase errors on the point response function of the radar is ...
Middleton, Robert
core   +2 more sources

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