Results 111 to 120 of about 188 (137)
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Range sidelobes suppression for wideband randomly discontinuous spectra OTH-HF radar signal
Proceedings of the 2004 IEEE Radar Conference (IEEE Cat. No.04CH37509), 2004Over-the-horizon (OTH) HF radars work in a heavily congested HF band. It is quite difficult to find broad clear frequency bands for system requirements. The randomly discontinuous spectra (RDS) signal is employed to combat spectrum congestion since it can evade the external interferences in the frequency domain.
null Dongpo Zhang, null Xingzhao Liu
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Time-frequency analysis based image processing for maneuvering target detection in HF OTH radar
IET Conference Publications, 2009In this paper an algorithm for maneuvering target detection in HF over-the-horizon radar is presented, which is based on the interpretation of the time-frequency map as an image. In the algorithm, radar signal is processed in joint time-frequency domain with short-time Fourier transform.
null Lei Zhiyong, null Huang Yinhe
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Issues with Orthogonal Waveform Use in MIMO HF OTH Radars
2011Current operational HF over-the-horizon (OTH) radars are now accepted as effective and comparatively low-cost wide-area surveillance sensors. They are routinely used to provide air and surface situational awareness over vast regions of land and sea. The technology in, and performance of, these current generation radars is impressive, however, there are
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Maneuvering target signal processing algorithm based on improved S-method for HF OTH radar
IET Conference Publications, 2009Core steps of S-method based maneuvering target signal processing for HF (high frequency) OTH(over-the-horizon) radar include the calculation of S-method distribution from signal's STFT (short time Fourier transform) and S-method distribution based signal decomposition.
null Wei Yinsheng +3 more
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A Method for Peak Power Evaluation for HF-OTH Skywave Radar [PDF]
, 2006 BERIZZI, FABRIZIO +3 more
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Radio Science, 2009
High‐resolution Doppler ionograms taken at 5 min intervals were obtained from a KEL IPS 71 ionosonde operating over a full ionosonde sweep range. The ionograms were converted into true height profiles using the program POLAN. POLAN also produced an equivalent parabolic layer model of best fit to the true height profile.
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High‐resolution Doppler ionograms taken at 5 min intervals were obtained from a KEL IPS 71 ionosonde operating over a full ionosonde sweep range. The ionograms were converted into true height profiles using the program POLAN. POLAN also produced an equivalent parabolic layer model of best fit to the true height profile.
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A Simulation Framework for HF-OTH Skywave Radars: the Received Signal Model
2007This paper is focused on the analysis and the simulation of a model for the received signal of a HF-OTH skywave radar. More precisely, this work aims to identify and model the main components of a HF-OTH skywave radar received signal, in order to provide a realistic simulated input that can be used as test-bed for the signal processing algorithms ...
Soleti, Rocco +4 more
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Spectrum-Controlled Waveforms Design with the Thumb- Tack Ambiguity Function for HF OTH Radars
2023 IEEE Radar Conference (RadarConf23), 2023Yuri Abramovich +2 more
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Realización de una antena en banda HF para un radar OTH
2016Código de proyecto: TCO ...
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Target Echo Characteristics Analysis of HF Groudwave Shipborne OTH Bistatic Radar
Journal of Electronics & Information Technology, 2011Zhen-xing Lu, Bin Xu, Ye-shu Yuan
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