The Use Of Frequency Agility To Achieve High Probability Of Target Detection On A Single Radar Scan
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Author | : Wayne Rivers |
Publisher | : |
Total Pages | : 28 |
Release | : 1975 |
Genre | : |
ISBN | : |
Download The Use of Frequency Agility to Achieve High Probability of Target Detection on a Single Radar Scan Book in PDF, Epub and Kindle
To achieve high probability of detection on a single scan, noncoherent integration of video signals can be more efficient than coherent integration if frequency agility is used to decorrelate the radar return pulse-to-pulse from a slowly fluctuating target. For a required detection probability of 0.9, the potential advantage from noncoherent integration of frequency-agile returns, as compared to coherent integration of the same total pulse energy on a single frequency, is about 5 dB for Swerling Case I-II targets and 2 dB for Case III-IV targets. The potential advantage is greater when higher detection probabilities are required. A strategy usable for both Swerling Case I-II and III-IV targets and P sub D values of 0.9 to 0.99 is indicated in which the burden of coherent and noncoherent integration is partitioned during the available dwell so that the number of statistically independent samples integrated after envelope detection is between 9 and 14.
Author | : |
Publisher | : |
Total Pages | : 324 |
Release | : 1994 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1032 |
Release | : 1975 |
Genre | : Science |
ISBN | : |
Download Government Reports Announcements & Index Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 882 |
Release | : 1975 |
Genre | : Government reports announcements & index |
ISBN | : |
Download Government Reports Annual Index Book in PDF, Epub and Kindle
Author | : David Knox Barton |
Publisher | : Artech House Publishers |
Total Pages | : 450 |
Release | : 1977 |
Genre | : Technology & Engineering |
ISBN | : |
Download Frequency Agility and Diversity Book in PDF, Epub and Kindle
Author | : M. Jankiraman |
Publisher | : Artech House |
Total Pages | : 430 |
Release | : 2018-07-31 |
Genre | : TECHNOLOGY & ENGINEERING |
ISBN | : 1630815691 |
Download FMCW Radar Design Book in PDF, Epub and Kindle
Frequency Modulated Continuous Wave (FMCW) radars are a fast expanding area in radar technology due to their stealth features, extremely high resolutions, and relatively clutter free displays. This groundbreaking resource offers engineers expert guidance in designing narrowband FMCW radars for surveillance, navigation, and missile seeking. It also provides professionals with a thorough understanding of underpinnings of this burgeoning technology. Moreover, readers find detailed coverage of the RF components that form the basis of radar construction. Featuring clear examples, the book presents critical discussions on key applications. Practitioners learn how to use time-saving MATLAB® and SystemVue design software to help them with their challenging projects in the field. Additionally, this authoritative reference shows engineers how to analyze FMCW radars of various types, including missile seekers and missile altimeters. Packed with over 600 equations, the book presents discussions on key radar algorithms and their implementation, as well as designing modern radar to meet given operational requirements.
Author | : Kenneth Lee Horn |
Publisher | : |
Total Pages | : 164 |
Release | : 1969 |
Genre | : Frequency discriminators |
ISBN | : |
Download Improvement in Target Detection with a Frequency Agile Pulsed Non-coherent Radar Book in PDF, Epub and Kindle
"Frequency agile tracking radars have received considerable attention in the literature. Frequency agility is useful in reducing target scintillations, thereby reducing tracking errors under certain conditions. However, little attention has been devoted to the improvement that can be expected in target detection with a frequency agile radar. In the past, complete pulse-to-pulse decorrelation of the target returns has been assumed for all of the analyses concerning target detection with frequency agile radars. This assumption always implies a transmitter with a large bandwidth. This dissertation analyses a pulsed non-coherent frequency agile radar applied to Swerling's Case I target. The target model is modified by assuming time decorrelation of the returns in the latter portion of the dissertation. Partial correlation of the returns is also allowed. It is shown that random selection of the transmitted frequency from a continuous probability density function yields a significant reduction in the transmitter bandwidth requirement, when compared to previous analyses, with a negligible decrease in detection range. Two practical density functions for the transmitted frequency are studied in detail, the uniform and anti-sine distribution. However, the results are general in that the curves for detection probabilities may be applied directly to any pulsed non-coherent frequency agile radar whose transmitted frequency is obtained from a probability density function. The analysis yields a closed form solution, previously unknown, for detection probabilities in the case of Swerling's Case I target. A computer program is included which calculates detection probabilities for Swerling's Case I target modified by a time decorrelation function"--Abstract, leaves ii-iii.
Author | : Andrea De Martino |
Publisher | : Artech House |
Total Pages | : 432 |
Release | : 2012 |
Genre | : Technology & Engineering |
ISBN | : 160807207X |
Download Introduction to Modern EW Systems Book in PDF, Epub and Kindle
Master the latest electronic warfare (EW) techniques and technologies related to on-board military platforms with this authoritative resource. You gain expert design guidance on technologies and equipment used to detect and identify emitter threats, giving you an advantage in the never-ending chess game between sensor guided weapons and EW systems. This unique book offers you deeper insight into EW systems principles of operation and their mathematical descriptions, arming you with better knowledge for your specific design applications. Moreover, you get practical information on how to counter modern communications data links which provide connectivity and command flow among the armed forces in the battlefield. Taking a sufficiently broad perspective, this comprehensive volume offers you a panoramic view of the various physical domains ? RF, Infrared, and electronics ? that are present in modern electronic warfare systems. This in-depth book is supported with over 280 illustrations and more than 560 equations.
Author | : |
Publisher | : |
Total Pages | : 224 |
Release | : 1970 |
Genre | : Science |
ISBN | : |
Download U.S. Government Research & Development Reports Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 880 |
Release | : 199? |
Genre | : |
ISBN | : |
Download Government reports annual index Book in PDF, Epub and Kindle