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2018 International Conference on Radar (RADAR)最新文献

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Optimizing the Sidelobe Level of a Two-Way Antenna Array Pattern by Thinning the Receive Aperture 通过细化接收孔径优化双向天线阵图的旁瓣电平
2018 International Conference on Radar (RADAR) Pub Date : 2018-08-01 DOI: 10.1109/RADAR.2018.8557293
R. Haupt
{"title":"Optimizing the Sidelobe Level of a Two-Way Antenna Array Pattern by Thinning the Receive Aperture","authors":"R. Haupt","doi":"10.1109/RADAR.2018.8557293","DOIUrl":"https://doi.org/10.1109/RADAR.2018.8557293","url":null,"abstract":"The maximum sidelobe level of a two-way antenna array pattern of a radar is usually considered to be the product of the maximum sidelobe level of the transmit array time the maximum sidelobe level of the receive array. This paper shows that a thinned receive array can be synthesized in order to place nulls of the receive pattern in the directions of the peak sidelobes of the transmit pattern to get even lower two-way maximum sidelobe levels. The two-way pattern is synthesized using a genetic algorithm to find a thinned receive aperture that minimizes the maximum two-way sidelobe level with a uniform transmit array.","PeriodicalId":187176,"journal":{"name":"2018 International Conference on Radar (RADAR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130114882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Enhanced ISAR Imaging for Surveillance of Multiple Drones in Urban Areas 用于城市地区多架无人机监视的增强型ISAR成像
2018 International Conference on Radar (RADAR) Pub Date : 2018-08-01 DOI: 10.1109/RADAR.2018.8557323
Woo-Kyung Lee, Kyung-Min Song
{"title":"Enhanced ISAR Imaging for Surveillance of Multiple Drones in Urban Areas","authors":"Woo-Kyung Lee, Kyung-Min Song","doi":"10.1109/RADAR.2018.8557323","DOIUrl":"https://doi.org/10.1109/RADAR.2018.8557323","url":null,"abstract":"In this paper, we attempt to generate high resolution profile of flying drone targets. To this purpose, multi-bands radar signals are adopted to carry out inverse synthetic aperture radar (ISAR) imaging of moving drones. After theoretical analysis is performed, experimental results are acquired through field tests. demonstrate that high resolution ISAR imaging provide effective measures to detect and classify the class of multiple target drones.","PeriodicalId":187176,"journal":{"name":"2018 International Conference on Radar (RADAR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126345164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Optimised Scan-to-Scan Integration Techniques for Low Observable Target Detection in Sea Clutter 海杂波低可观测目标检测的优化扫描-扫描集成技术
2018 International Conference on Radar (RADAR) Pub Date : 2018-08-01 DOI: 10.1109/RADAR.2018.8557225
K. Venkataraman, S. T. Nguyen, L. Bateman
{"title":"Optimised Scan-to-Scan Integration Techniques for Low Observable Target Detection in Sea Clutter","authors":"K. Venkataraman, S. T. Nguyen, L. Bateman","doi":"10.1109/RADAR.2018.8557225","DOIUrl":"https://doi.org/10.1109/RADAR.2018.8557225","url":null,"abstract":"Detection of low RCS (Radar Cross section) targets (e.g small boats) immersed in Sea clutter has always been a challenge, but with a critical detection requirement. Apart from small boats entering into the territorial waters, Unmanned Aviation Vehicles over land and sea that are involved in EW assignments and also submarine periscopes are targets of interest. Such targets have weak reflected/scattered power, masked by strong correlated sea clutter and ground clutter returns. Extracting such weaker and unstable target returns requires efficient, reliable and robust Target detection methods and techniques. One of the detection methods viz Scan to Scan integration and their enhancement, exploiting the decorrelation properties of sea clutter over several antenna scans, will be analysed in this paper, with appropriate illustrations.","PeriodicalId":187176,"journal":{"name":"2018 International Conference on Radar (RADAR)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127571320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Two Component Statistical Model of Coherent Radar Sea Clutter 相干雷达海杂波的双分量统计模型
2018 International Conference on Radar (RADAR) Pub Date : 2018-08-01 DOI: 10.1109/RADAR.2018.8557246
S. Bocquet
{"title":"Two Component Statistical Model of Coherent Radar Sea Clutter","authors":"S. Bocquet","doi":"10.1109/RADAR.2018.8557246","DOIUrl":"https://doi.org/10.1109/RADAR.2018.8557246","url":null,"abstract":"A new two component compound Gaussian model is proposed for coherent radar sea clutter, with each component having its own spatial correlation. One component represents Bragg scattering from capillary waves, modulated in both frequency and intensity by gravity waves, and the other fast scattering from breaking waves. The intensity of each component is represented by an independent gamma variate with its own scale and shape parameter, with the overall texture distributed as the sum of these two gamma variates. The model is compared to data collected at medium grazing angles with the DST Ingara airborne X-band radar. It is able to explain many of the distinctive features of coherent radar sea clutter.","PeriodicalId":187176,"journal":{"name":"2018 International Conference on Radar (RADAR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121201742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Novel Range-Doppler Processing and Waveform Design Method for Extending Unambiguous Doppler 扩展无二义多普勒的新型距离多普勒处理和波形设计方法
2018 International Conference on Radar (RADAR) Pub Date : 2018-08-01 DOI: 10.1109/RADAR.2018.8557307
Yinsheng Wei, Zhineng Mao
{"title":"Novel Range-Doppler Processing and Waveform Design Method for Extending Unambiguous Doppler","authors":"Yinsheng Wei, Zhineng Mao","doi":"10.1109/RADAR.2018.8557307","DOIUrl":"https://doi.org/10.1109/RADAR.2018.8557307","url":null,"abstract":"Coherent pulse train can obtain high Doppler resolution, but leads to range and Doppler ambiguity. Thus, the staggered pulse repetition frequencies (PRFs) is proposed to extend the unambiguous range or Doppler coverage. However, there are various disadvantages in pulse-to-pulse stagger or block-to-block stagger. In this paper, inspired by the Doppler compensation processing, we propose a modified range-Doppler (RD) processing method. Moreover, a waveform design scheme matching this method is also presented. The modified RD processing associated with the designed waveform can effectively extend the unambiguous Doppler coverage without affecting the unambiguous range. Experimental evidence verified the effectiveness of the modified RD processing method and the designed waveform.","PeriodicalId":187176,"journal":{"name":"2018 International Conference on Radar (RADAR)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124556712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Online Transmit Beampattern Notching for Colocated MIMO Radar 定位MIMO雷达的在线发射波束陷波
2018 International Conference on Radar (RADAR) Pub Date : 2018-08-01 DOI: 10.1109/RADAR.2018.8557300
Meiqi Liu, Shenghua Zhou, Hongwei Liu, Dongfang Yang, Guansuo Tian
{"title":"Online Transmit Beampattern Notching for Colocated MIMO Radar","authors":"Meiqi Liu, Shenghua Zhou, Hongwei Liu, Dongfang Yang, Guansuo Tian","doi":"10.1109/RADAR.2018.8557300","DOIUrl":"https://doi.org/10.1109/RADAR.2018.8557300","url":null,"abstract":"Radar system may receive deceptive targets from hostile active Electronic Counter Measurement (ECM) devices if its signal is detected by an ECM device. In practice, once the direction of the ECM device is located, it makes sense to form a notch at the transmit beampattern in the direction. Current transmit beampattern notching techniques for colocated Multiple-Input Multiple-Output (MIMO) radar mainly use waveform optimization methods, which however has a huge computation cost. In this paper, we propose an online MIMO transmit beampattern notching method that is formulated as a linear programming problem and then can support online implementation for its low computation cost. The basic concept is to slightly vibrate the phases of a group of MIMO waveforms optimized offline for certain purpose such that transmit beampattern notching would not spoil too much properties of original waveforms. Numerical results indicate that for an omnidirectional MIMO transmit beampattern formed with 4 transmit waveforms each with 128 codes, this method can form a −22dB transmit beampattern notch, whereas the peak sidelobe level grows merely 1.25dB.","PeriodicalId":187176,"journal":{"name":"2018 International Conference on Radar (RADAR)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115520186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Results of Airborne PCL Under CCI Conditions Using DVB-T Illuminators of Opportunity CCI条件下机载PCL使用DVB-T机遇照明的结果
2018 International Conference on Radar (RADAR) Pub Date : 2018-08-01 DOI: 10.1109/RADAR.2018.8557280
Philipp Wojaczekt, Ashley Summers, D. Cristallini, I. Walterscheid, P. Lombardo, F. Colone
{"title":"Results of Airborne PCL Under CCI Conditions Using DVB-T Illuminators of Opportunity","authors":"Philipp Wojaczekt, Ashley Summers, D. Cristallini, I. Walterscheid, P. Lombardo, F. Colone","doi":"10.1109/RADAR.2018.8557280","DOIUrl":"https://doi.org/10.1109/RADAR.2018.8557280","url":null,"abstract":"Passive radar, or Passive Coherent Location (PCL), has reached a stage of maturity for stationary PCL receivers exploiting stationary transmitters of opportunity. The next logical step is to place PCL receivers on moving platforms. Mounting PCL receivers on airborne platforms poses a challenge to the system designer. One issue that has received little attention in the literature is that airborne PCL receivers can be more susceptible to Cochannel Interference (CCI) than ground based PCL systems due to the receiver operating at higher altitudes (no terrain masking), therefore potentially having a line-of-sight (LOS) to the interfering transmitter, and atmospheric propagation. For efficient spectrum usage the carrier frequency for a cluster of Digital Video Broadcasting-Terrestrial (DVB-T) transmitters in one Single-Frequency-Network (SFN) will be reused in a second more distant SFN. The distance between the two SFNs is designed such that the signals from each SFN will not self-interfere for ground based receivers. However for airborne receivers the combination of higher operating altitude, propagation effects, and intentional suppression of the Direct Path Interference (DPI) can result in the broadcast signal from the more distant SFN interfering with the signal from the intended SFN transmitter of opportunity. The interfering signal can be regarded as wideband noise jamming and if unaccounted for it can impede PCL performance quite severely. To investigate the problem of CCI in the case of airborne PCL, we conducted an airborne experiment to utilize DVB-T signals in a SFN.","PeriodicalId":187176,"journal":{"name":"2018 International Conference on Radar (RADAR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130942316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Target Tracking and Classification for Missile Using Interacting Multiple Model (IMM) 基于交互多模型的导弹目标跟踪与分类
2018 International Conference on Radar (RADAR) Pub Date : 2018-08-01 DOI: 10.1109/RADAR.2018.8557241
K. Yoo, J. Chun, Jinwoo Shin
{"title":"Target Tracking and Classification for Missile Using Interacting Multiple Model (IMM)","authors":"K. Yoo, J. Chun, Jinwoo Shin","doi":"10.1109/RADAR.2018.8557241","DOIUrl":"https://doi.org/10.1109/RADAR.2018.8557241","url":null,"abstract":"To successfully shoot down a flying enemy missile, high accuracy missile tracking is a pre-requisite. However, since the dynamics of the missile change with the phase of the trajectory, there is a limit to the tracking with ordinary Kalman filter (KF) which considers single dynamics. Therefore, in this paper, to improve tracking performance, interacting multiple model (IMM) which considers various dynamic models simultaneously is applied. In addition, by classifying the missile head and debris generated at stage separation using the model probability calculated in the IMM, unnecessary detection and tracking resources used to track debris are reduced. The performance of the proposed method is verified through various simulation results and the favorable results are obtained.","PeriodicalId":187176,"journal":{"name":"2018 International Conference on Radar (RADAR)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131634864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Towards an Accuracy Bound for OTHR 对OTHR的精度边界的探讨
2018 International Conference on Radar (RADAR) Pub Date : 2018-08-01 DOI: 10.1109/RADAR.2018.8557291
S. Davey, R. Gardiner-Garden
{"title":"Towards an Accuracy Bound for OTHR","authors":"S. Davey, R. Gardiner-Garden","doi":"10.1109/RADAR.2018.8557291","DOIUrl":"https://doi.org/10.1109/RADAR.2018.8557291","url":null,"abstract":"Skywave over-the-horizon radar is a sensor modality that uses refraction of radio waves through the Earth's ionosphere to observe at very long range. An OTHR system uses secondary sensors to probe the ionosphere in order to characterise propagation. The accuracy of estimated positions from OTHR depends on both the radar measurements and the system's ability to map the ionosphere using these secondary sensors. We describe a method to build a Cramer Rao lower bound on localisation accuracy for a realistic OTHR network.","PeriodicalId":187176,"journal":{"name":"2018 International Conference on Radar (RADAR)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122110981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Frequency Estimator for Real Valued Sinusoidal Signals Using Three DFT Samples 基于三个DFT样本的实值正弦信号频率估计
2018 International Conference on Radar (RADAR) Pub Date : 2018-08-01 DOI: 10.1109/RADAR.2018.8557341
Hao Chen, Fangxing Xu, Jiangyuan Li
{"title":"A Frequency Estimator for Real Valued Sinusoidal Signals Using Three DFT Samples","authors":"Hao Chen, Fangxing Xu, Jiangyuan Li","doi":"10.1109/RADAR.2018.8557341","DOIUrl":"https://doi.org/10.1109/RADAR.2018.8557341","url":null,"abstract":"This paper presents a simple frequency estimator for real valued sinusoidal signals using only three DFT samples. Simulations confirm that our proposed method outperforms traditional alternatives based on three DFT samples. Compared with estimators for complex sinusoidal signals, our method increases the estimation accuracy thanks to its consideration of negative spectrum components. Compared with the estimators with windowing technique, our method also has better performance in spite of lower complexity.","PeriodicalId":187176,"journal":{"name":"2018 International Conference on Radar (RADAR)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116835458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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