Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037]最新文献

A climatology-based model for long-term prediction of radar beam refraction 基于气候学的雷达波束折射长期预报模式

Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037] Pub Date : 2012-10-17 DOI: 10.1109/RADAR.2000.851860

T. S. Pittman, V. Pyati

{"title":"A climatology-based model for long-term prediction of radar beam refraction","authors":"T. S. Pittman, V. Pyati","doi":"10.1109/RADAR.2000.851860","DOIUrl":"https://doi.org/10.1109/RADAR.2000.851860","url":null,"abstract":"Hitherto, radar beam bending has been predicted using four-thirds Earth or standard atmosphere. A new and more accurate model has been developed using a mix of ray tracing and climatology. Usually a microwave beam traveling through the atmosphere bends towards the Earth with a radius of curvature greater than the Earth's surface. However, seasonal and climatic variations influence the amount and direction of bending, and at times create temperature or moisture inversions that tend to redirect the energy along the Earth's surface leaving gaping holes where there is no coverage. In this work, iterative ray tracing is used to determine the most direct path from the radar to the target through the climatologically predicted refractive atmosphere. Height measurement error is calculated by comparing the geographic path to the refracted path. Only vertical refractivity variation is taken into account, and the effects of ducting and exponential refractivity are both modeled. As a test, the model computed height errors at 17 locations world-wide for a hypothetical target at 10000 feet and 60 nautical miles. The predicted errors varied from 100 feet to 2260 feet as against the standard atmosphere predicted height error of 804 feet. The model traces to all targets when no ducting is modeled, to all targets outside the duct with surface ducting, and to some targets outside the duct with elevated ducting. In the remaining cases, adjacent rays sometimes cross, causing ambiguity in the estimation and, usually, tracing failure.","PeriodicalId":286281,"journal":{"name":"Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037]","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115393246","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

Discoverer II Program summary 发现者II程序总结

Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037] Pub Date : 2000-05-12 DOI: 10.1109/RADAR.2000.851794

D. A. Whelan

{"title":"Discoverer II Program summary","authors":"D. A. Whelan","doi":"10.1109/RADAR.2000.851794","DOIUrl":"https://doi.org/10.1109/RADAR.2000.851794","url":null,"abstract":"The Discoverer II Joint Program is a joint USA Air Force, Defense Advanced Research Projects Agency (DARPA), National Reconnaissance Office (NRO) and Army technology demonstration program. When successful, the Discoverer II Program's demonstration of two satellites integrated with an Army Tactical Exploitation System (TES) will support the technical feasibility, cost affordability and mission utility of a subsequent program to launch a full constellation of satellites known as the Space-Based Radar (SBR) Objective System. Such a space-based objective system will offer high-range-resolution ground moving target indication (HRR-GMTI), synthetic aperture radar (SAR) imaging, and terrain mapping using collection capabilities for high-resolution digital terrain elevation data (DTED). Theater or joint task force commanders will task these advanced capabilities directly from the area of operations. Conversely, the satellites will downlink collected data directly to theater ground stations for timely exploitation. The Discoverer II program will design, fabricate and launch two research and development (R&D) prototype HRR-GMTI/SAR satellites, and conduct a one-year, in-orbit demonstration of the satellites integrated with a TES. The program is jointly managed and is administered as an Air Force acquisition program by the Discoverer II Joint Program Office.","PeriodicalId":286281,"journal":{"name":"Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037]","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122137095","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: 17

Xpatch 4: the next generation in high frequency electromagnetic modeling and simulation software Xpatch 4:下一代高频电磁建模与仿真软件

Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037] Pub Date : 2000-05-12 DOI: 10.1109/RADAR.2000.851945

D. Andersh, J. Moore, S. Kosanovich, D. Kapp, R. Bhalla, R. Kipp, T. Courtney, A. Nolan, F. German, J. Cook, J. Hughes

引用次数: 73

A novel method of translational motion compensation for hopped-frequency ISAR imaging 一种新的跳频ISAR成像平移运动补偿方法

Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037] Pub Date : 2000-05-12 DOI: 10.1109/RADAR.2000.851842

Zheng Liu, Shouhong Zhang

引用次数: 13

Data fusion algorithms based on radar and ADS measurements for ATC application 基于雷达和ADS测量的空管数据融合算法

Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037] Pub Date : 2000-05-12 DOI: 10.1109/RADAR.2000.851812

J. Besada, J. García, G. de Miguel, F.J. Jimenez, G. Gavin, J. Casar

引用次数: 16

Vision on aviation surveillance systems 航空监视系统远景

Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037] Pub Date : 2000-05-12 DOI: 10.1109/RADAR.2000.851797

S. Zaidman

{"title":"Vision on aviation surveillance systems","authors":"S. Zaidman","doi":"10.1109/RADAR.2000.851797","DOIUrl":"https://doi.org/10.1109/RADAR.2000.851797","url":null,"abstract":"Summary form only given. The FAA's future aviation surveillance system is based on the use of various technological surveillance elements, each tailored to the airspace and capacity requirements within a particular geographic area. The Primary Surveillance Radar (PSR), Monopulse Secondary Surveillance Radar (MSSR), Mode S, Automatic Dependent Surveillance-Broadcast (ADS-B) and ADS-Contract (C) are technologies that can provide the surveillance capabilities required for operations in the National Airspace System (NAS) well into the future. ADS-B and multilateration are under development as technologies that will be capable of supporting the Advanced Surface Movement Guidance and Control System (A-SMGCS), by the provision of position and other aircraft/vehicle-derived data. ADS-B and/or ADS-C are suitable technologies to provide surveillance data in areas where currently no radar infrastructure exists or is not feasible. Current ground based surveillance functions (i.e., PSR, MSSR and Mode S), must provide independent verification of position information provided in the ADS-B messages, along with weather, intruders and blunder detection information. Future surveillance capabilities may be implemented to allow downlink aircraft parameters (DAP) to be used to improve ground based surveillance data processing (SDPS) systems and ATM thus allowing greater traffic capacity to be handled by the controller. In addition, ADS-B may be implemented to relieve the traffic load from the MSSR/Mode S systems where the density has slowly risen to such a level that the capacity of the secondary radar may limit future expansion.","PeriodicalId":286281,"journal":{"name":"Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037]","volume":"188 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131994611","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

Boost-phase acceleration estimation 助推段加速度估计

Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037] Pub Date : 2000-05-12 DOI: 10.1109/RADAR.2000.851832

E.L. Crosson, J. B. Romine, D. Willner, S.J. Kusiak

引用次数: 11

Ultra-wideband sensor fusion for BMD discrimination 用于BMD识别的超宽带传感器融合

Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037] Pub Date : 2000-05-12 DOI: 10.1109/RADAR.2000.851800

K. Cuomo, J. Piou, J.T. Mayhan

引用次数: 16

Adaptive polarimetric target detection with coherent radar 相干雷达自适应极化目标探测

Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037] Pub Date : 2000-05-12 DOI: 10.1109/RADAR.2000.851811

D. Pastina, Pierfrancesco Lombardo, Vincenzo Pedicini, T. Bucciarelli

{"title":"Adaptive polarimetric target detection with coherent radar","authors":"D. Pastina, Pierfrancesco Lombardo, Vincenzo Pedicini, T. Bucciarelli","doi":"10.1109/RADAR.2000.851811","DOIUrl":"https://doi.org/10.1109/RADAR.2000.851811","url":null,"abstract":"A CFAR adaptive polarimetric generalized likelihood ratio test (GLRT) detector is proposed for the coherent detection of radar targets against a Gaussian background and its performance is fully characterized. A model based version of such a detector is also derived by applying a similar GLRT approach to a structured covariance matrix. This latter detector is shown to reduce the adaptivity losses and thus to reduce the homogeneous region, which is required to estimate the clutter covariance matrix. The application to live radar data demonstrates the performance improvement achievable in practice by exploiting the polarimetric information. In particular adding the HV channel to the two co-polarized channels can provide a sensible performance increase with respect to the HH and VV only. This is especially true for man-made targets having cross-polarized response higher than the clutter. When the target has a lower cross-polarized return than the clutter, a much lower improvement is available but there is not a sensible adaptivity loss and the CFAR characteristic is always enforced against the Gaussian background.","PeriodicalId":286281,"journal":{"name":"Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037]","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115559076","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: 89

Radar bridge clearance sensor 雷达驾驶室间隙传感器

Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037] Pub Date : 2000-05-12 DOI: 10.1109/RADAR.2000.851912

R. Lefevre, H. Shih, C. Shipley, D. Woods

引用次数: 8