Accession Number : ADA620834


Title :   Integrated Range-Doppler Map and Extended Target Classification with Adaptive Waveform for Cognitive Radar


Descriptive Note : Doctoral thesis


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING


Personal Author(s) : Nieh, Jo-Yen


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a620834.pdf


Report Date : Dec 2014


Pagination or Media Count : 123


Abstract : We set out to design an extended target classification scheme while determining the target s range-and-Doppler location with the use of adaptive waveform for a closed-loop cognitive radar platform. To that end, this work is divided into three objectives: 1) in support of determining range-Doppler locations, we investigate the ambiguity function of the matched waveform called eigenwaveform, 2) in support of target classification, we look at an adaptive waveform technique called probability-weighted eigenwaveform (PWE) and introduce two new waveforms, and 3) we design an integrated range-Doppler map and extended target classification scheme. In this work, we show that the fundamental properties of ambiguity function for extended targets are different when compared to classical waveforms for point targets. We improve on the adaptive waveform called maximum a posteriori PWE and introduce two new waveforms called match-filtered PWE and two-stage PWE. We propose an integrated range-Doppler map and identification scheme for multiple moving extended targets. Performance comparisons in terms of joint probability of identification and determining targets range-Doppler locations with traditional wideband waveform and the three PWE-based waveforms are shown. It is shown that the three PWE-based waveforms perform better than the classical wideband waveform.


Descriptors :   *DOPPLER SYSTEMS , *RADAR , *TARGET CLASSIFICATION , *WAVEFORMS , AMBIGUITY , FAST FOURIER TRANSFORMS , FUNCTIONS , MAPS , POSITION(LOCATION) , PROBABILITY , PULSE TRANSMITTERS , SCENARIOS , TARGET DETECTION , TARGET RECOGNITION , THESES


Subject Categories : Acoustic Detection and Detectors
      Active & Passive Radar Detection & Equipment
      Target Direction, Range and Position Finding
      Radiofrequency Wave Propagation


Distribution Statement : APPROVED FOR PUBLIC RELEASE