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2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM最新文献

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Three dimensional LADAR imaging system using AR-4000LV laser rangefinder 三维雷达成像系统采用AR-4000LV激光测距仪
2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM Pub Date : 2011-10-20 DOI: 10.1109/MRRS.2011.6053650
A. Al-Temeemy
{"title":"Three dimensional LADAR imaging system using AR-4000LV laser rangefinder","authors":"A. Al-Temeemy","doi":"10.1109/MRRS.2011.6053650","DOIUrl":"https://doi.org/10.1109/MRRS.2011.6053650","url":null,"abstract":"A new Laser Detection and Ranging or laser radar (LADAR) prototype system has been designed and implemented to be able to capture the 3D LADAR data from the surfaces of various objects. This system is designed to have a high technical specification (sampling rate and resolution) at a minimum cost. This opens up the possibility for further research in the LADAR field, which is currently limited because of the high cost of traditional LADAR systems. This paper describes the technical aspects of the LADAR design which include hardware components and both the mathematical model and the controlling software that are required for reconstructing the resultant LADAR images from the scanning measurements.","PeriodicalId":424165,"journal":{"name":"2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128998041","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
SAR systems for light-weight aircrafts 用于轻型飞机的SAR系统
2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM Pub Date : 2011-10-20 DOI: 10.1109/MRRS.2011.6053592
D. Vavriv, O. Bezvesilniy, R. Kozhyn, V. Vynogradov, V. Volkov, S. Sekretarov
{"title":"SAR systems for light-weight aircrafts","authors":"D. Vavriv, O. Bezvesilniy, R. Kozhyn, V. Vynogradov, V. Volkov, S. Sekretarov","doi":"10.1109/MRRS.2011.6053592","DOIUrl":"https://doi.org/10.1109/MRRS.2011.6053592","url":null,"abstract":"In the paper, airborne SAR systems developed and produced at the Institute of Radio Astronomy are described. These systems are designed to be operated from light-weight aircrafts. Implemented hardware and software solutions are discussed. Examples of SAR images are also presented.","PeriodicalId":424165,"journal":{"name":"2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126531416","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
Simulation of 3D LADAR imaging system using fast target response generation approach 基于快速目标响应生成方法的三维雷达成像系统仿真
2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM Pub Date : 2011-09-22 DOI: 10.1117/12.902309
A. Al-Temeemy
{"title":"Simulation of 3D LADAR imaging system using fast target response generation approach","authors":"A. Al-Temeemy","doi":"10.1117/12.902309","DOIUrl":"https://doi.org/10.1117/12.902309","url":null,"abstract":"A new approach has been used to generate the target response for the Laser Detection and Ranging or laser radar (LADAR) simulator. This approach is fast and able to deal with high scanning resolution and complex target models. This leads to a more efficient LADAR simulator and opens up the possibility for simulating more complex scenes LADAR images. The approach is to derived the target angular ranges algorithms in order to directly select the target's parts that lie in the laser field (parts required for target response generation) instead of checking the whole target as it's done by the normal approach. The performances of these two approaches are compared for a variety of conditions. The simulation results show an enhanced performance when using the proposed approach.","PeriodicalId":424165,"journal":{"name":"2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115317687","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
Spectral moment estimation of weather echoes in pulsed Doppler weather radars: Spectrum width 脉冲多普勒天气雷达中天气回波的谱矩估计:谱宽
2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM Pub Date : 2011-08-01 DOI: 10.1109/MRRS.2011.6053644
D. Lekhovytskiy, D. Rachkov, A. Semeniaka, V. P. Ryabukha, D. Atamanskiy
{"title":"Spectral moment estimation of weather echoes in pulsed Doppler weather radars: Spectrum width","authors":"D. Lekhovytskiy, D. Rachkov, A. Semeniaka, V. P. Ryabukha, D. Atamanskiy","doi":"10.1109/MRRS.2011.6053644","DOIUrl":"https://doi.org/10.1109/MRRS.2011.6053644","url":null,"abstract":"We define and compare the statistical characteristics of the estimates of Doppler velocity spectrum (DVS) width of meteorological formations (MF) based on the various modifications of “pulse pair” method. For the conditions, when the form of unimodal DVS differs from the Gaussian one, the errors of proposed modification of “pulse pair” method are evaluated, and possible ways to reduce them are proposed. The recurrent organization of estimation procedure that minimizes the computational costs is proved.","PeriodicalId":424165,"journal":{"name":"2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115727069","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
Polarimetric passive remote sensing of atmospheric temperature at 60 GHz 60 GHz波段大气温度偏振被动遥感
2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM Pub Date : 2011-08-01 DOI: 10.1109/MRRS.2011.6053636
R. McMillan
{"title":"Polarimetric passive remote sensing of atmospheric temperature at 60 GHz","authors":"R. McMillan","doi":"10.1109/MRRS.2011.6053636","DOIUrl":"https://doi.org/10.1109/MRRS.2011.6053636","url":null,"abstract":"Strong absorptions due to atmospheric oxygen near 60 GHz provide the means for remote sensing of atmospheric temperature fluctuations that may indicate the presence of disturbances such as high-altitude clear-air turbulence, aircraft wake turbulence, and severe weather. These emissions may be polarized due to the presence of aerosols or possibly some other undetermined cause. This paper describes a radiometer that will remotely sense temperature fluctuations as well as their polarization signatures.","PeriodicalId":424165,"journal":{"name":"2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125038779","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
Radiation of a current-conductive 2D object of a complex shape 具有复杂形状的导电二维物体的辐射
2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM Pub Date : 2011-08-01 DOI: 10.1109/MRRS.2011.6053619
A. Vishnevsky
{"title":"Radiation of a current-conductive 2D object of a complex shape","authors":"A. Vishnevsky","doi":"10.1109/MRRS.2011.6053619","DOIUrl":"https://doi.org/10.1109/MRRS.2011.6053619","url":null,"abstract":"Research is dedicated to the questions of electromagnetic compatibility of isotropic point antennas which are set on the current-conductive body of arbitrary form (for example, airplane). Frequency-spatial division of real antennas of air vehicle must be predicted by previous calculations. It is expedient to make them on the stage of airplane constructing. This approach allows to get a corresponding economic effect due to decreasing cost and amount of labor in contrast to the standard test measurement methods.","PeriodicalId":424165,"journal":{"name":"2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116859660","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
Nonlinear interaction of space charge waves of millimeter wave range in nonuniform n-GaN films 非均匀n-GaN薄膜中毫米波范围空间电荷波的非线性相互作用
2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM Pub Date : 2011-08-01 DOI: 10.1109/MRRS.2011.6053673
V. Grimalsky, S. Koshevaya, G. Urquiza-Beltrán, A. García-Barrientos
{"title":"Nonlinear interaction of space charge waves of millimeter wave range in nonuniform n-GaN films","authors":"V. Grimalsky, S. Koshevaya, G. Urquiza-Beltrán, A. García-Barrientos","doi":"10.1109/MRRS.2011.6053673","DOIUrl":"https://doi.org/10.1109/MRRS.2011.6053673","url":null,"abstract":"The nonlinear interactions of space charge waves (SCW) in n-GaN films are investigated theoretically. SCW are amplified due to the negative differential conductivity. The transversely nonuniform films are considered. The hydrodynamic diffusion-drift equations for volume electron concentration were used jointly with the Poisson equation for the electric field. The transverse inhomogeneity results in the decrease of the electron mobility near the surfaces of the film and in the decrease of spatial increments of amplification of SCW. The generation of the second and the third harmonics and the amplified signals at the combination frequencies is demonstrated.","PeriodicalId":424165,"journal":{"name":"2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM","volume":"26 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114045027","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
Stability analysis of nonlinear circuits driven with modulated signals 调制信号驱动非线性电路的稳定性分析
2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM Pub Date : 2010-03-08 DOI: 10.1109/MRRS.2011.6053596
A. Suárez, F. Ramírez, I. Lizarraga, J. Collantes
{"title":"Stability analysis of nonlinear circuits driven with modulated signals","authors":"A. Suárez, F. Ramírez, I. Lizarraga, J. Collantes","doi":"10.1109/MRRS.2011.6053596","DOIUrl":"https://doi.org/10.1109/MRRS.2011.6053596","url":null,"abstract":"Nonlinear microwave circuits are usually simulated with the harmonic-balance method, which is insensitive to the stability properties of the solution obtained. Therefore, this method must be complemented with stability-analysis techniques, in order to check the physical existence of the solution. Existing techniques assume a periodic excitation, usually consisting of a single tone. However, practical circuits such as power amplifiers are generally be driven by modulated signals or multiple input tones. This paper presents a methodology for the stability analysis of nonlinear circuits in the presence of modulation signals. This methodology is based on the determination of the time-varying poles associated to an input-output representation of the system. In the presence of modulated signals, this representation is obtained by linearizing the envelope-transient system that rules the circuit behavior about the modulated steady-state solution. The formulation and methodology have been applied to a practical power-combined amplifier at 3 GHz, with very good results in the comparison with independent simulations and experimental results.","PeriodicalId":424165,"journal":{"name":"2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM","volume":"1967 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130141489","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: 11
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