Results 211 to 220 of about 146,973 (259)
Some of the next articles are maybe not open access.
Effect of Frequency on Micro-Doppler Signatures of a Helicopter
2019 International Conference on Advances in Big Data, Computing and Data Communication Systems (icABCD), 2019Helicopters usually fly at considerably lower speeds as compared with fixed wing aircraft and the distinguishing features of helicopters are their main and tail rotors. The main rotors, constant altitude and speed can be used by radar, both to identify a target as a helicopter, and further can be used to get information about the helicopter type with ...
Vikas Agnihotri +2 more
openaire +1 more source
Analysis and Estimation of Micro-Doppler Effect in Passive Positioning System
2008 Eighth International Conference on Intelligent Systems Design and Applications, 2008The micro-Doppler effect on a passive positioning system, introduced by motion of a mobile terminal in multipath fading environment, was investigated and its parameters were estimated. First micro-Doppler model under multipath propagation was presented.
Miaohong Cai, Feng He, Lenan Wu
openaire +1 more source
Micro-Doppler effect of cooperative spinning target
IET International Radar Conference 2015, 2015As to the issue of precious velocity measurement, micro-Doppler model of cooperative target was established. First, launch coordinate system was introduced to discuss conveniently. Second, two models of micro-Doppler of cooperative target were deduced.
Zhang Ruoyu Zhang Ruoyu +4 more
openaire +1 more source
Radar target recognition based on micro-Doppler effect
Optoelectronics Letters, 2008Mechanical vibration of target structures will modulate the phase function of radar backscattering, and will induce the frequency modulation of returned signals from the target. It generates a side bands of the target body Doppler frequency shift, which is helpful for target recognition. Based on this, a micro-Doppler atomic storehouse is built for the
Wei-guang Dong, Yan-jun Li
openaire +1 more source
Vibrating Target Micro-Doppler Signature in Bistatic SAR With a Fixed Receiver
IEEE Transactions on Geoscience and Remote Sensing, 2012 Bistatic synthetic aperture radar (BSAR) provides strategical, technical and economical advantages in radar imaging. Motions and micro-motions of objects in an illuminated scene introduces Doppler and micro-Doppler effects in the received radar echoes ...
Carmine Clemente
exaly +2 more sources
The Influence of Different Factors on Rotor's Micro-Doppler Effects
2019 International Applied Computational Electromagnetics Society Symposium - China (ACES), 2019The micro-Doppler effects produced by micro-motion of target contain the information about the structure and the motion of the target. In this paper, the different rotors are taken as examples to analyze their micro-Doppler effects. The influence of different factors, such as rotor size, hub, rotational speed and relative position of rotors on the ...
Jianzhou Li +3 more
openaire +1 more source
Research on Detection Method of UAV Based on micro-Doppler Effect
2020 39th Chinese Control Conference (CCC), 2020With the wide application of small UAV, its negative effects begin to appear gradually. Therefore, it is of great significance to detect UAV. Because the micro Doppler effect of objects is different under the radar, the UAV can be detected by the time-frequency characteristics of the target micro Doppler signal. In this paper, the radar echo of the UAV
Shuo Li +3 more
openaire +1 more source
Micro-Doppler effect of micromotion dynamics: a review
SPIE Proceedings, 2003In this paper, we review the micro-Doppler effect induced by micro-motion dynamics and provide mathematics of the micro-Doppler effect by introducing micro motions to the conventional Doppler effect. Micro-Doppler effect was originally introduced in laser systems, but it can also be observed in microwave radar systems.
openaire +1 more source
Radar Target Recognition Based on Micro-Doppler Effect
2006 8th international Conference on Signal Processing, 2006Micro-Doppler effect is of great potential for radar target recognition since the micro-dynamics of structures on the target can be detected with it. The recognition process includes time-frequency analysis of the returned radar signal, feature extraction from time-frequency distribution images, and classification according to the feature set.
Huixia Sun, Zheng Liu, Qing Lin
openaire +1 more source
Bistatic occlusion effect of missile warhead based on micro-Doppler effect
Optik, 2014Abstract Micro-Doppler effect is induced by the micro-motion dynamics of the radar target itself or any structure on the target. Spinning, coning and wobble are typical basic micro-motions of missile warhead. In this paper, a cone-shaped model for missile warhead with micro-nutation is established under the case of bistatic radar system, followed by ...
Ming Li, Yuesong Jiang
openaire +1 more source