Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249)最新文献_第2页

Performance of an ATR index module against MSTAR data ATR索引模块对MSTAR数据的性能

Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249) Pub Date : 1999-04-20 DOI: 10.1109/NRC.1999.767277

D. Cyganski, J. Kilian, D. Fraser

{"title":"Performance of an ATR index module against MSTAR data","authors":"D. Cyganski, J. Kilian, D. Fraser","doi":"10.1109/NRC.1999.767277","DOIUrl":"https://doi.org/10.1109/NRC.1999.767277","url":null,"abstract":"We present a performance analysis of an indexing module contained in an automatic target recognition (ATR) system developed at Worcester Polytechnic Institute (WPI). The linear signal decomposition/direction of arrival (LSD/DOA) technique provides a low computational-cost indexing function for pose in ATR applications. The LSD/DOA technique forms a reduced-size, essential-information object data set which implicitly incorporates target and sensor variation specific data. To control the computational costs, the system consists of two independent components: a computationally expensive off-line component which forms the object representation and a computationally inexpensive on-line object recognition component. The size of the stored data set may also be adjusted providing a means to trade off complexity versus performance. Synthetic aperture radar (SAR) data collected as part of the Moving and Stationary Target Acquisition and Recognition (MSTAR) program has been released to the public, providing an opportunity for ATR performance assessment against a standard high quality data set. We present the results of a number of simulated tests against the MSTAR public database to demonstrate the performance of the LSD/DOA index module on a given target along with the performance of the WPI ATR itself as a function of the depression angle and target configuration.","PeriodicalId":411890,"journal":{"name":"Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117174426","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

Dual-speed SAR imaging of moving targets 运动目标的双速SAR成像

Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249) Pub Date : 1999-04-20 DOI: 10.1109/NRC.1999.767324

Genyuan Wang, X. Xia, V. Chen

引用次数: 10

3 kW L band mode S solid state transmitter (STX2000) 3kw波段模式S固态发射机(STX2000)

Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249) Pub Date : 1999-04-20 DOI: 10.1109/NRC.1999.767307

P. Grandgeorge, P. Eudeline

{"title":"3 kW L band mode S solid state transmitter (STX2000)","authors":"P. Grandgeorge, P. Eudeline","doi":"10.1109/NRC.1999.767307","DOIUrl":"https://doi.org/10.1109/NRC.1999.767307","url":null,"abstract":"This paper describes a L band solid state pulsed transmitter which has been developed to equip a new mode S station for air traffic control in the frame of the programme POEMS (Pre-Operational European Mode S Station). The STX2000 transmitter was designed with the new available technologies to meet the mode S requirements defined by the International Civil Aviation Organisation (ICAO) but it is also compatible with the present air traffic communication system. Compared to the old generation, it typically delivers more power (3 kW peak at 1030 MHz) to a 2 channel rotating antenna: sum channel (directional propagation) and control channel (omnidirectional propagation) with the capability of a dynamic output power attenuation (0 dB to 12 dB) in order to modify the radar range according to the aircraft position. The maximum 2400 mode S interrogations per second can be transmitted on the sum channel with a duty cycle which can reach 64% during 4.8 ms (96 consecutive made S interrogations). Regarding the air traffic control application, a precise safety analysis defined tests that have to be run in operation to report any failure which may affect the system performance and to protect the transmitter itself (for instance, output RF transistor junction temperature measurements).","PeriodicalId":411890,"journal":{"name":"Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114283784","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

3-D interferometric ISAR images for scattering diagnosis of complex radar targets 用于复杂雷达目标散射诊断的三维干涉ISAR图像

Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249) Pub Date : 1999-04-20 DOI: 10.1109/NRC.1999.767328

Xiaojian Xu, H. Luo, Peikang Huang

引用次数: 11

Digital dispersive delay line replacement for legacy radars 取代传统雷达的数字色散延迟线

Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249) Pub Date : 1999-04-20 DOI: 10.1109/NRC.1999.767197

D.C. Earl, D. Moulin, R.L. Landran, H.G. Leney, R. Rifkin

{"title":"Digital dispersive delay line replacement for legacy radars","authors":"D.C. Earl, D. Moulin, R.L. Landran, H.G. Leney, R. Rifkin","doi":"10.1109/NRC.1999.767197","DOIUrl":"https://doi.org/10.1109/NRC.1999.767197","url":null,"abstract":"Some legacy phased array radars use analog dispersive delay lines to expand and compress their FM chirp waveforms. These acoustic-based devices are often no longer available. This paper describes the design of a functionally equivalent digital replacement for one of these analog delay lines. Various design options were considered including IF versus baseband processing, time domain versus frequency domain filtering, and COTS boards versus custom ASICs. The system design issues of dynamic range, chirp impulse response design, delay line processing latency, and the effect of mismatch between the transmitter and receiver were addressed. The main challenge of the board level design was to meet the digital signal processing computational demands within the inherently short analog delay line latency. This ultimately required developing a custom VLSI signal processing chip. The 1.3 million transistor ASIC chip performs a 1024 tap finite-impulse response (FIR) filter running at an estimated 2 Msps. The configurable architecture of the ASIC allows the number of FIR filter taps to be traded for sampling rate and could be useful in other radar or communication systems.","PeriodicalId":411890,"journal":{"name":"Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124142104","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

Impact of platform motion on wide angle synthetic aperture radar (SAR) image quality 平台运动对广角合成孔径雷达(SAR)图像质量的影响

Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249) Pub Date : 1999-04-20 DOI: 10.1109/NRC.1999.767234

D. Kirk, R.P. Maloney, M. Davis

引用次数: 13

Circular array STAP 圆阵天线

Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249) Pub Date : 1999-04-20 DOI: 10.1109/NRC.1999.767284

M. Zatman

引用次数: 104

Transform domain localized processing using measured steering vectors and non-homogeneity detection 利用测量的转向向量和非均匀性检测变换域定位处理

Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249) Pub Date : 1999-04-20 DOI: 10.1109/NRC.1999.767347

R. Adve, Todd B. Hale, Michael C. Wicks

引用次数: 23

A two stage hybrid space-time adaptive processing algorithm 一种两阶段混合时空自适应处理算法

Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249) Pub Date : 1999-04-20 DOI: 10.1109/NRC.1999.767344

R. Adve, T. Hale, M. Wicks

引用次数: 20

Secondary surveillance radar monopulse target azimuth error estimation due to obstacle shadowing 基于障碍物遮挡的二次监视雷达单脉冲目标方位误差估计

Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249) Pub Date : 1999-04-20 DOI: 10.1109/NRC.1999.767302

L. Vinagre, K. Woodbridge

{"title":"Secondary surveillance radar monopulse target azimuth error estimation due to obstacle shadowing","authors":"L. Vinagre, K. Woodbridge","doi":"10.1109/NRC.1999.767302","DOIUrl":"https://doi.org/10.1109/NRC.1999.767302","url":null,"abstract":"Recorded data from some secondary surveillance radar (SSR) stations has shown deviations positional accuracy when the SSR antenna shadowed by neighbouring man-made structures (such as communication masts, buildings and radomes). Modern SSR monopulse receivers estimate the azimuth of aircraft through the orientation of the incident planar wavefront. Obstacles in the propagation path diffract part of the electromagnetic wave energy and as a result, the electric field across the antenna array is subject to a disturbance. The resultant azimuth error in the shadowed sector depends on the width and height of the obstacle and on its position relative both to the radar and the aircraft. A method to estimate the azimuth error curve due to obstacle shadowing based on cylindrical diffraction theory is described. A comparison between measured data and the estimated error curves reveals that azimuth errors can be very precisely calculated. Accurate estimation of azimuth errors due to obstructions has increasing significance for operators of SSRs. Radar performance must continue to be safeguarded in the face of increasing pressure to allow development on or near radar sites. Methods of estimating the effects of such developments will play a key role in future safeguarding.","PeriodicalId":411890,"journal":{"name":"Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114509943","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