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Thursday, August 6, 2020 | History

2 edition of Improved radar range-gated MTI processor found in the catalog.

Improved radar range-gated MTI processor

by Charles James Boyle

  • 199 Want to read
  • 40 Currently reading

Published by Naval Postgraduate School in Monterey, California .
Written in English


ID Numbers
Open LibraryOL25380217M

  Most often range gating is used in sonar, lidar, and radar to blank out the receiver in the near field where back-scatter and clutter would overload the receiver front end. We once designed a lidar system to work in a blast furnace, and the near field dust reflects about x the desired signal at 20m. If you are measuring range as the. A new type of radar digital signal processor for use with ASR radars is described. It features spectral processing accomplished by combining a 3-pulse canceller with an 8-point, weighted, discrete Fourier transform and adaptive thresholds. This combination of circuits provides a dB increase in MTI improvement factor over present ASR's and is within 2 dB of optimum .

4. (a) Explain how the bipolar video signal is converted in to unipolar signal in MTI radar that uses range gates and filters. (b) Derive an expression for blind speeds of MTI radar. Discuss the effect of large wavelength and large PRF on lowest blind speed of target. (April/May ) 5. (a) An MTI radar is operated at 9GHz with a PRF of pps. Depending on the basic principle of moving target indicator (MTI) filter used in radar signal processing [16] [17][18][19][20]which get rid from the fixed targets and .

  In this video, i have explained MTI RADAR system with following aspects. 1. MTI RADAR system 2. Block diagram of MTI RADAR system 3. Working of MTI RADAR system 4. Applications of MTI RADAR system. The design and implementation of a higher order Moving Target Indication (MTI) engine is presented. This is part of a single chip radar signal processor also .


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Improved radar range-gated MTI processor by Charles James Boyle Download PDF EPUB FB2

Radar range-gated MTI Processor Paperback – January 1, by Nejat Koral (Author) See all formats and editions Hide other formats and editions. Price New from Used from Paperback, January 1, "Please retry" $ Author: Nejat Koral. An illustration of an open book.

Books. An illustration of two cells of a film strip. Video. An illustration of an audio speaker. Audio. An illustration of a " floppy disk. Software. An illustration of two photographs. Improved radar range-gated MTI processor Pages: Figure 1.

Improved radar range-gated MTI processor book LISTOFILLUSTRATIONS Pulse-radarvideospectrum 13 Singledelay. LINK C UNCLASS IFIED S/N 01 01 - Security Classification A- 3 I 'Thesis K Koral.

- ' • nn-7 l'. ; 12S7 c.l Radar range-gated MTI processor. 6 SZP J MAY 79 23 • Si 5 3 tt 8 8 Thesis 1^ K Koral c.i Radar range-gated MTT processor.

Improved radar range-gated MTI processor. By Charles James Boyle. Download PDF (7 MB) Abstract. Approved for public release; distribution is unlimitedA redesigned timing circuit and improved handpass filters were constructed and integrated with the MTI range-gate-and-filter modification kit for the Naval Postgraduate School AN/UPS-1D radar Author: Charles James Boyle.

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FIG. 13 illustrates a processor for either a range-gated MTI or a range-gated pulse doppler radar. These radar types are described by Skolnik () on pagesand Through use of range gates and boxcar generators, range-gated MTI and pulse doppler radars transform received signal I into signals (J1, J2, and J3 in FIG.

application of FFT we obtain the MTD processor. Fig.1 proposed system. RESULTS AND DISCUSSION. A sample MTI radar simulation is shown below which indicates the position of moving objects in the presence of a clutter environment.

MATLAB provides an efficient tool in studying the nature and behavior of a MTI radar functioning. Full text of "Range-gated moving target indicator with digital filters / David B. Hoisington and David L. other formats Sh1RANGE-GATED MOVING TARGET INDICATOR WITH.

non coherent mti radar (contd) • non coherent mti radar uses clutter echo as the reference signal, to extract doppler shifted (echo) frequency.

• phase detector (in mti) has been replaced by conventional amplitude detector. • note:‐echo signal from clutter also has. UnitedStates NavalPostgraduateSchool THESIS Control1 W ing ith ofRange Digital by-Gated Techni MTI:]ues Radar Lieutenant JohnWarren Commander, Milla United rd Sta'tesNavy ThesisAdvisor: D gton June ApprovedloftpubticK(ilza.i>z;di&VvibuitionimLbnitzd.

Radar Functions • Normal radar functions: 1. range (from pulse delay) 2. velocity (from Doppler frequency shift) 3. angular direction (from antenna pointing) • Signature analysis and inverse scattering: 4. target size (from magnitude of return) 5.

target shape and components (return as a function of direction) 6. moving parts (modulation of. MTI and Pulse Doppler Radar: Introduction, Delay line Cancellers, Multiple or staggered Pulse Repetition Frequencies, Range gated Doppler Filters, Block Diagram of Digital Signal Processor, Example of MTI radar Processor, Pulse Doppler Radar, Non coherent MTI,MTI from moving platform, Other types of MTI, Airborne radar.

Radar range-gated MTI processor. By Nejat Koral. Get PDF (2 MB) Abstract. Approved for public release; distribution is unlimitedTwenty range-gated channels and the associated timing circuits were constructed for implementation of a moving-target indicator (MTI) by range-gates and filters (RGF).

texts All Books All Texts latest This Just In Smithsonian Libraries FEDLINK (US) Genealogy Lincoln Collection.

National Emergency Library. Top Radar range-gated MTI processor. Item Preview remove-circle Share or Embed This Item. EMBED EMBED (for. 5. MTI and Pulse Doppler Radar: Introduction, Delay line Cancellers, Multiple or.

staggered Pulse Repetition Frequencies, Range gated Doppler Filters, Block. Diagram of Digital Signal Processor, Example of MTI radar Processor, Pulse. Doppler Radar, Non coherent MTI,MTI from moving platform, Other types.

of MTI, Airborne radar. A pulse-compression MTI doppler radar system includes an antenna, a transter, a coded modulator, a receiver and a display. The coded modulator is connected to the transmitter and has at least two waveform generators for coding pulses having low cross-correlation.

A pulse-compression filter having at least two pulse compressors for providing pulse compressed. Radar System Design Chapter 14 MTI and Pulsed Doppler Radar Chapter MTI and Pulsed Doppler Radar 14 - 1 Dr.

Sheng-Chou Lin Radar System Design MTI and Pulsed Doppler Radar •Moving Target Indication (MTI)radar: A delay line canceller filter to isolate moving targets from nonmoving background - Ambiguous velocity - Unambiguous range. MTI And Pulse Doppler Radar Introduction, Delay line Cancellers, Multiple or staggered Pulse Repetition Frequencies, Range gated Doppler Filters, Block Diagram of Digital Signal Processor, Example of MTI radar Processor, Pulse Doppler Radar, Non coherent MTI,MTI from moving platform, Other types of MTI, Airborne radar.

A multiple range interval clutter cancellation circuit for MTI radars is disclosed, for assuring cancellation of narrow band clutter in the second or further range interval, while preserving wideband cancellation in the nearer range intervals and economizing on the number of fill pulses.

The circuit includes two clutter cancellers. One canceller has a relatively narrow band clutter. Improved MTI Radar Signal Processor W. H. Drury 3 April Lincoln Laboratory MASSACHUSETTS INSTITUTE OF TECHNOLOGY LEXINGTON, MASSACHUSETTS Prepared for the Federal Aviation Administration, Washington, D.C.

This document is available to the public through the National Technical Information Service, Springfield, VA be used in a range-gated MTI (Moving Target Indication) receiver to improve its performance. Special consideration was given to the AN/UPS-l and AN/SPSB,C radars which are used in the Greek Navy in a clutter environment characteristic of the Mediterranean Sea.

Appropriate modifications to their existing analog systems are suggested. I/ Li.A dual-pulse coherent MTI system having a time interval between pulses as short as zero. The pulses are "chirped" in opposite sense, the latter constituting a unique coding for eliminating range ambiguity problems.

Video return signals are received and applied to two parallel channels each containing pulse compression and limiting circuits.