2015 IEEE Radar Conference最新文献_第3页

Distribution analysis of segmented wave sea clutter in littoral environments 滨海环境中分段波状海杂波的分布分析

2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411868

M. D. Strempel, J. D. Villiers, J. Cilliers, A. McDonald

{"title":"Distribution analysis of segmented wave sea clutter in littoral environments","authors":"M. D. Strempel, J. D. Villiers, J. Cilliers, A. McDonald","doi":"10.1109/RADARCONF.2015.7411868","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411868","url":null,"abstract":"This paper investigates the littoral sea clutter amplitude distributions associated with individual segments within a periodic wave. Low grazing angle, X-Band sea clutter data, obtained from the CSIR online database was utilised for this study. The dataset contains fixed frequency pulsed radar returns of low grazing angle sea clutter with a pulse repetition frequency (PRF) of 2.5kHz. The processing involves correcting the data by means of rotation such that the periodic wave phase structures within the data align over time and are parallel to the longtime axis. Thereafter, the data and thus the wave structures, are segmented into multiple partitions, where each partition represents a section of the wave phase in the range dimension. These segments are then fitted against the K-distribution. It is shown that the approach can accurately describe specific sections of the wave with a reduced error between actual and estimated distributions. The improved probability density function (PDF) representation will allow for more accurate data analysis and data generation in littoral environments, which can be used for the development of new detectors, as well as the simulation of their performance.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116056599","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

Self-calibration of a passive radar system using GSM base stations 使用GSM基站的无源雷达系统的自校准

2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411918

B. Knoedler, R. Zemmari

引用次数: 1

Range resolution improvement for multiple PCL radar systems on moving platforms 移动平台上多PCL雷达系统距离分辨率的改进

2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411915

D. Cristallini, P. Wojaczek, M. Ummenhofer

引用次数: 5

Enhanced OMP algorithm for the detection and estimation of closely spaced moving objects in the presence of Doppler ambiguities 改进的OMP算法在多普勒模糊情况下对近距离运动目标的检测和估计

2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411891

Linda Aouchiche, G. Desodt, C. Adnet, L. Ferro-Famil

引用次数: 3

High level performance model and performance comparison for multistatic radar system design 多基地雷达系统设计的高级性能模型与性能比较

2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411881

V. Janse van Rensburg, W. Nel, J. Cilliers, U. Boniger, U. Siegenthaler, P. Wellig

{"title":"High level performance model and performance comparison for multistatic radar system design","authors":"V. Janse van Rensburg, W. Nel, J. Cilliers, U. Boniger, U. Siegenthaler, P. Wellig","doi":"10.1109/RADARCONF.2015.7411881","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411881","url":null,"abstract":"In the history of radar there have been three periods, or \"resurgences\", of increased development activity in the field of bistatic and multistatic radar. The first resurgence occurred in the 1950's and the second in the late 1960's, and we are currently in the third resurgence [1]. However, the common theme over these resurgences is that there is never an significant uptake of operational radars which exploit bistatic and/or multistatic principles. In general, the design, analysis and optimization of such systems is significanlty more difficult than that of monostatic systems. This is due to the increased number of free design parameters and the lack of standard design methodologies and models. This paper describes the development of a performance prediction software tool which focusses on the signal to noise ratio (SNR) and signal to clutter (SCR) analysis of multistatic systems in the presence of multipath propagation. To allow for the comparison of various system topologies use is made of a novel cumulative distribution technique which summarizes the performance of a single system concept as a single SNR and SCR distribution graph which is evaluated over the coverage volume of the systems. The operation of the tool is demonstrated by comparing the performance of a scanning transmit system against that of a of staring (floodlight) transmit system. The scanning system, which is also the more complex system, is shown to have significantly better performance than that of the staring system.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125596992","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

Analysis of high resolution land clutter using an X-band radar 用x波段雷达分析高分辨率地杂波

2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411869

Amer Melebari, M. Y. Abdul Gaffar, J. J. Strydom

{"title":"Analysis of high resolution land clutter using an X-band radar","authors":"Amer Melebari, M. Y. Abdul Gaffar, J. J. Strydom","doi":"10.1109/RADARCONF.2015.7411869","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411869","url":null,"abstract":"In modern radar systems with high range resolution, the statistical properties of clutter have a significant effect on the performance of the radar. Analyzing the radar returns from various clutter terrains is essential when aiming to optimize the detection performance of the radar within these terrains. This paper presents the statistical analysis of three types of land clutter terrains: Saudi Arabian urban, South African urban and Saudi Arabian date farms, all measured at low grazing angle. Measurements were performed with an X-band radar system with two instantaneous bandwidths of 40 MHz and 400 MHz. The clutter data was analyzed by fitting the amplitude Probability Distribution Function (PDF) to different distributions using the Method of Moments (MoM) and applying the Kullback-Leibler Divergence test to assess the accuracy of the PDF fittings. The analysis also included computing the Power Spectral Density (PSD) of the measurements. Finally, a comparison was made between the different land clutter terrains. The amplitude PDF of the urban clutter measurements had a longer tail compared to the amplitude PDF clutter measurements of the date farms terrain. The best fit for the urban clutter amplitude PDF measurements was found to be the Log-normal distribution whereas the date farms amplitude PDF measurements were best fitted by the K-distribution. Lastly, the Doppler bandwidth of the date farm clutter measurements was found to be larger than the Doppler bandwidth of the urban clutter measurements, however this could be explained by the difference in wind conditions on the measurement days.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134584654","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

SigmaHat: A toolkit for RCS signature studies of electrically large complex objects SigmaHat:一个用于研究大型复杂对象的RCS签名的工具包

2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411925

J. C. Smit

引用次数: 6

Tactical radar missile challenges 战术雷达导弹挑战

2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RadarConf.2015.7411852

I. F. Gibbons, J. Botha

{"title":"Tactical radar missile challenges","authors":"I. F. Gibbons, J. Botha","doi":"10.1109/RadarConf.2015.7411852","DOIUrl":"https://doi.org/10.1109/RadarConf.2015.7411852","url":null,"abstract":"The first air-to-air missiles were reportedly fired by the French during World War I. These Le Prieur missiles were unguided and used to destroy balloons from a range of 100 to 150 m [1]. The Americans developed a semi-active guided bomb called the BAT missile [2]. A few of these were converted to fully active missiles which saw service in 1944. In the authors' knowledge, this is the first active Radar Guided missile. It was used in an anti-ship role. The missile was designated with the aid of airborne Radar, it locked onto the target and once launched it was fully autonomous using its own Radar seeker for guidance. Since then many nations have been developing both Infra-red and Radar guided missiles. These missiles have been actively used primarily in regional conflicts e.g. Falklands war, Gulf war. Initially the infra-red missile has accounted for more kills than the Radar guided missile, but as the Radar missile capability improves, its success rate has rapidly improved. The last decade has seen a massive growth in electronic hardware capability; this includes FPGA's, memory and processing capability. This has opened the doors to new development in Radar guided missiles. Much more software processing can be done in a modern Radar Seeker. The requirement to integrate a radar seeker into a missile system is a challenge between demanding performance requirements, severe environmental conditions and physical and technological constraints. This paper addresses some of the critical requirements for a fully active Radar guided missile system.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117041838","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: 1

Investigation of hopped frequency waveforms for range and velocity measurements of radar targets 用于雷达目标距离和速度测量的跳频波形研究

2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411930

Umur Kathree, Willie Nel, V. Janse van Rensburg, A. Mishra

{"title":"Investigation of hopped frequency waveforms for range and velocity measurements of radar targets","authors":"Umur Kathree, Willie Nel, V. Janse van Rensburg, A. Mishra","doi":"10.1109/RADARCONF.2015.7411930","DOIUrl":"https://doi.org/10.1109/RADARCONF.2015.7411930","url":null,"abstract":"In the field of radar, High Range Resolution (HRR) profiles are often used to improve target tracking accuracy in range and to allow the radar system to produce an image of an object using techniques such as inverse synthetic aperture radar (ISAR) processing. These profiles are typically formed from wideband linearly stepped frequency waveforms which are synthesised by combining the spectra of the transmitted pulses in the burst [1]. This work focuses on the use of HRR profiles generated from hopped frequency waveforms. This adds the advantage of range-Doppler decoupling and robustness against electronic countermeasures (ECM) [2], [3]. However hopped frequency waveforms suffer from high levels of sidelobes [4]. Improving the spurious free dynamic range (SFDR) of target measurements is required for various applications such as target recognition. This was done with the CLEAN technique [5] which could reduce the sidelobes to under 40 dB below the maximum amplitude of the profiles. To show how this work can be applied to areas such as ISAR, simulated rotating targets were used. In terms of range and velocity measurement accuracy, the CLEAN method performed adequately for signal to noise ratios (SNR) above -10 dB. This work can be extended to incorporate acceleration, extended targets and measured data.","PeriodicalId":267194,"journal":{"name":"2015 IEEE Radar Conference","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125384886","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

Airborne X- and Ku-band single-pass DSM generation by means of metasensing radar 机载X波段和ku波段用超感雷达产生单通DSM

2015 IEEE Radar Conference Pub Date : 2015-10-01 DOI: 10.1109/RADARCONF.2015.7411921

L. Marotti, A. Coccia, A. Meta

引用次数: 1