نتایج جستجو برای: radar interference

تعداد نتایج: 132723  

Journal: :CoRR 2017
Fan Liu Christos Masouros Ang Li Tharmalingam Ratnarajah Jianming Zhou

Abstract—We propose a novel approach to enable the coexistence between Multi-Input-Multi-Output (MIMO) radar and downlink multi-user Multi-Input-Single-Output (MU-MISO) communication system. By exploiting the constructive multi-user interference (MUI), the proposed approach trades-off useful MUI power for reducing the transmit power, to obtain a power efficient transmission. This paper focuses ...

Journal: :EURASIP J. Adv. Sig. Proc. 2014
Zhongtao Luo Kun Lu Xuyuan Chen Zishu He

Ship detection in heavy sea clutter is a big challenge for over-the-horizon (OTH) radar. Wideband signal is helpful for improving range resolution and the signal-to-clutter ratio. In this paper, to support OTH radar employing wideband in cochannel interference, we propose environmental sensing-based waveform (ESBW) strategy, by considering transmit waveform design as an active approach and cogn...

Journal: :Remote Sensing 2017
Célia Lucas Silvan Leinss Yves Bühler Armando Marino Irena Hajnsek

Multipath interference can occur in ground-based radar data acquired with systems with a large antenna beam width in elevation in an upward looking geometry, where the observation area and the radar are separated by a reflective surface. Radiation reflected at this surface forms a coherent overlay with the direct image of the observation area and appears as a fringe-like pattern in the data. Th...

2015
B. Espinosa T.V. Hromadka R. Perez

Doppler radar data are increasingly used in rainfall-runoff synthesis studies, perhaps due to radar data availability, among other factors. However, the veracity of the radar data are often a topic of concern. In this paper, three Doppler radar outcomes developed by the United States National Weather Service at three radar sites are examined and compared to actual rain gage data for two separat...

1997
Russell Rzemien Jay F. Roulette R. RZEMIEN J. F. ROULETTE

he Applied Physics Laboratory, in its role as Technical Direction Agent for the Phalanx close-in weapon system radar, designed and operates a coherent data collector to analyze radar system performance. This article presents examples of how coherent data analysis has helped program development efforts and provided insights into the performance of the Phalanx search radar. The topics discussed i...

Journal: :Physical Communication 2015
Awais Khawar Ahmed Abdel-Hadi T. Charles Clancy

Multiple-input multiple-output (MIMO) radar is a relatively new concept in the field of radar signal processing. Many novel MIMO radar waveforms have been developed by considering various performance metrics and constraints. In this paper, we show that finite alphabet constant-envelope (FACE) quadrature-pulse shift keying (QPSK) waveforms can be designed to realize a given covariance matrix by ...

2013
SaiDhiraj Amuru R. Michael Buehrer Ravi Tandon Shabnam Sodagari

In this paper, we propose an information theoretic waveform design algorithm for multiple-input multiple-output radars to support co-existence with a communication system under additional constraints on interference reduction from the clutter, minimizing the peak-to-average-power ratio and correlation levels of the radar. Numerical results are presented which show the performance of the propose...

2002
A. J Gasiewski W. Wiesbeck

The IEEE Geoscience and Remote Sensing Society (GRSS) Technical Committee on Frequency Allocation in Remote Sensing (FARS) is charged with providing recommendations and responses to queries on interference and frequency allocation issues in passive and active microwave remote sensing. In response to questions stemming from proposals to develop ultra-widehand (UWB) vehicular radar systems operat...

2017
N. V. S. V. Vijay Kumar K. Raja Rajeswari P. Rajesh Kumar Jürgen Sachs S. H. Chang R. Sharan

A radar system is generally implemented and addressed to detect the target of concern. So, in a radar system, analysis and application of Ultra Wide Band (UWB) signals solves most of the problems of radar target detection. Since multiple-input multiple-output (MIMO) radar possess significant potentials for fading mitigation, resolution enhancement and interference and jamming suppression, by op...

2012
Kyoung-Whoan Suh Jeong-Seok Jang Chang-Won Lee Yong-Chan Jeon

With the help of Rec. ITU-R P.1546 and geography information system, the interference analysis for the fixed wireless system and radar is presented based upon the frequencydistance rules with minimum coupling loss. To obtain the computational results, real geography information on the map was taken for the given area of 80x60[km] 2 , and field strength and path profile were illustrated for rada...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید