{"title":"Analysis of Ultra Wide Band Noise Radar with Randomized Stepped Frequency","authors":"S. Axelsson","doi":"10.1109/IRS.2006.4338057","DOIUrl":"https://doi.org/10.1109/IRS.2006.4338057","url":null,"abstract":"Step frequency radar has been used for a long time in wide-band radar applications, such as turntable ISAR, airborne VHF SAR and ground penetration radar. The frequency is stepped linearly with constant frequency change, and range cells are formed after FFT-processing of the received frequency samples. The total covered bandwidth defines the range resolution, and the length of the frequency step restricts the non-ambiguous range interval. Random choice of the transmitted frequencies suppresses the range ambiguity and improves the ECCM performance. In this paper, the ambiguity function and the noise floor limiting the possible side lobe suppression are analyzed. Experimental results are compared with theoretical predictions using sets of randomly distributed radar raw data obtained from linear step frequency radar measurements.","PeriodicalId":124475,"journal":{"name":"2006 International Radar Symposium","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121557083","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}
{"title":"A New Measurement Technique to Enable Engineers To Quickly Troubleshoot Radar Design Problems","authors":"Matthew J. Maxwell, Kent K. Johnson","doi":"10.1109/IRS.2006.4338153","DOIUrl":"https://doi.org/10.1109/IRS.2006.4338153","url":null,"abstract":"Until recently, analyzing many radar signals was not a straightforward task. Modern radars depend on complex RF signals that vary with time. To truly understand system performance and troubleshoot today's complex radar signals, the time, frequency, and modulation domains all require analysis in a time-correlated fashion. Traditionally, no single test instrument was designed for this breadth of radar pulse analysis capability. Engineers were thus forced to use many different test instruments in custom-built test sets to collect sufficient data for reliable troubleshooting. Using multiple test instruments is costly, time consuming and can introduce measurement uncertainty that can lead to unreliable diagnostics. The latest generation of Real-Time Spectrum Analyzers (RTSA) solves these problems by providing the ability to trigger on an RF pulse, seamlessly capture it into memory and analyze the pulse in several time-correlated domains on a single instrument. This paper examines how the newest generation of RTSA pulse measurement technology can replace many traditional radar test sets for rapid and reliable radar systems diagnostics.","PeriodicalId":124475,"journal":{"name":"2006 International Radar Symposium","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126369140","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}
{"title":"Radar signals monitoring","authors":"K. Banasiak, A. Pieniezny","doi":"10.1109/IRS.2006.4338050","DOIUrl":"https://doi.org/10.1109/IRS.2006.4338050","url":null,"abstract":"Due to technical development it is possible to combine ELINT/ESM functions of electronic intelligence equipment. Time effectiveness is one of the most important factors of such equipment. The usage of omnidirectional and wideband reception allows to shorten time detection of signals. This however cause that pulses stream is combination of pulse trains coming from number of emitters. The analysis requires then an operator interaction what results with time recognition lengthen. The paper presents the concept of automatic radar activity monitoring on the base of omnidirectional and wideband acquisition of signals. The effective method of pulses streams matching to radar emission separates number of radar emitters. Results of method performance are presented and discussed.","PeriodicalId":124475,"journal":{"name":"2006 International Radar Symposium","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114334662","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}
{"title":"Re-entry Vehicles: Dynamic Modeling and Radar Tracking","authors":"F. Opitz","doi":"10.1109/IRS.2006.4338077","DOIUrl":"https://doi.org/10.1109/IRS.2006.4338077","url":null,"abstract":"The trajectory ofa re-entry vehicle may be partitioned into boost, exo-atmospheric and endo-atmospheric phases. This paper considers the tracking aspects in these phases.","PeriodicalId":124475,"journal":{"name":"2006 International Radar Symposium","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123188083","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}
{"title":"Homomorphic Inverse-FEXP filtering for target detection in sea SAR images","authors":"M. Bertacca, F. Berizzi, E. Mese","doi":"10.1109/IRS.2006.4338027","DOIUrl":"https://doi.org/10.1109/IRS.2006.4338027","url":null,"abstract":"Generalized linear filtering techniques allow signals that have been nonadditively combined to be separated, and the analytical convenience of the principle of superposition for linear systems to be preserved. In this paper we employ Fractionally Exponential spectral models (FEXP) to adaptively modify homomorphic filtering of sea Synthetic Aperture Radar (SAR) images, thereby improving target detection in sea SAR imagery. The presented method demonstrated reliable results when applied to ERS1 and ERS2 SAR PRI of the Mediterranean Sea and North Sea.","PeriodicalId":124475,"journal":{"name":"2006 International Radar Symposium","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130097061","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}
{"title":"Recognition of radar signals by time - frequency peak filtering","authors":"E. Swiercz","doi":"10.1109/IRS.2006.4338105","DOIUrl":"https://doi.org/10.1109/IRS.2006.4338105","url":null,"abstract":"In this paper the recognition of radar signals by the time - frequency peak filtering (TFPF) is considered. The term recognition in this case can be understood as the reconstruction of signal waveform from observations corrupted by additive noise. Time - frequency peak filtering method (TFPF) is based on encoding of the noisy signal as the instantaneous frequency (IF) of a unit amplitude frequency modulated (FM) analytic signal. Estimation of the IF encoded signal, performed by taking the peak of the pseudo Wigner - Ville distribution (WVD), allows to get the estimation of signal waveform. It is shown that the length of the window of the pseudo Wigner - Ville distribution has a great significance for the accuracy of the TFTP algorithm. The performance of the pseudo WVD TFPF is assessed on the real radar signal. It is showed Nearly clear reconstruction of the signal in the low SNR ratio is presented in this paper.","PeriodicalId":124475,"journal":{"name":"2006 International Radar Symposium","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129059464","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}
M. A. Al-Zubaidy, Khalil H. Sayidmarie, S. S. Al-Shamaa
{"title":"Radar System Simulator Using PC and Matlab Simulink","authors":"M. A. Al-Zubaidy, Khalil H. Sayidmarie, S. S. Al-Shamaa","doi":"10.1109/IRS.2006.4338145","DOIUrl":"https://doi.org/10.1109/IRS.2006.4338145","url":null,"abstract":"This contribution treats the simulation of pulse Doppler radar system by using PC and MATLAB Simulink. The simulator has been implemented through hardware represented in the AT computer interface card while the software was build with C++ language. The phase detector unit was built using MATLAB Simulink programs. Various MTI systems were studied and sample results for single canceller and matched filtering are shown.","PeriodicalId":124475,"journal":{"name":"2006 International Radar Symposium","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127585773","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}
G. Galati, M. Leonardi, C. Cosenza, F. Zito, F. Gottifredi
{"title":"Evaluation of the Interferences of GNSS (Galileo/GPS) signals on Air Traffic Control Radar and Wind Profiler Radar","authors":"G. Galati, M. Leonardi, C. Cosenza, F. Zito, F. Gottifredi","doi":"10.1109/IRS.2006.4338038","DOIUrl":"https://doi.org/10.1109/IRS.2006.4338038","url":null,"abstract":"GNSS systems use frequency band close to that of L-band primary surveillance radar for Air Traffic Contro, i.e. 1250-1350 MHz, and of some Wind Profiler Radar (1290 MHz). According to the World Radio Communication Conference 2003 (WRC-03) resolution, in order to protect Aeronautic Radio Navigation System (ARNS) systems, Radio Navigation Satellite System (RNSS) administrations shall ensure that the equivalent power flux density (pfd) level produced by all RNSS space stations of all systems does not exceed - 121.5 dB(W/m2) in any 1 MHz band. However, in order to assess the performance of ATC L-Band radar, DME and Wind Profiler Radar with GNSS interfering signals, it is useful not only to reason in terms of pfd but, rather, to model (at least for some critical cases) the Radar receiver chains and evaluate the impact of the interfering signal (if present) on every stage of the receiver and on the overall output, i.e at the user level.","PeriodicalId":124475,"journal":{"name":"2006 International Radar Symposium","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124881676","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}
{"title":"Illumination of Air Environment Using Radiation of SB Broadcast Stations","authors":"V. Lutsenko, I. Popov, I. Lutsenko","doi":"10.1109/IRS.2006.4338043","DOIUrl":"https://doi.org/10.1109/IRS.2006.4338043","url":null,"abstract":"The possibility of air objects location in bistatic radars employing as illumination the signals of broadcast SB stations is considered in this paper. The spectrums of illumination signal are investigated experimentally. The requirements to the direct signal blanketing degree for the location assurance at given distances. The possibility of building of bistatic systems complex employing broadcast SB stations and providing location of acquiring object employing the information of Doppler frequency translation of signal receiving from object is considered.","PeriodicalId":124475,"journal":{"name":"2006 International Radar Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122957498","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}
{"title":"Verification of the Radar Visibility of Small Objects","authors":"T. Stupak, R. Wawruch","doi":"10.1109/IRS.2006.4338083","DOIUrl":"https://doi.org/10.1109/IRS.2006.4338083","url":null,"abstract":"Minimal and maximal distances of radar visibility and tracking of small objects were measured in different weather conditions in the Gulf of Gda¿sk and at high sea on big tanker ship and s/v \"Dar M¿odzie¿y\". Radars working in S and X band were used. Different small objects, including buoys, hydrofoil boats and high-speed crafts, were observed and tracked on different radars in different weather conditions. Results of these experiments will be presented in this paper.","PeriodicalId":124475,"journal":{"name":"2006 International Radar Symposium","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122320987","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}