By Topic

Digital radar recording and analysis

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
K. Schlachta ; Forschungsinstitut für Funk und Mathematik, Werthhoven, Germany

The structure of systems for the automatic detection of radar echos in interference signals may be derived by the statistical decision theory if the statistical properties of echos and interference are known. The knowledge of the correlation function from fixed targets and weather echoes is of special interest. Photographic records in combination with an oscilloscope are feasible only for a low number of signals and were done for echoes from aircraft. For evaluation of the correlation function with sufficient accuracy nearly 10sdata have to be used. They have to be selected out of a quantity of about (3 ... 5).10sstored data. This large amount of data can only be handled with a computer. A special device (RADICORD) was developed to store the analog radar signal of a usual surveillance radar. The amplitude and phase components are sampled (1 MHz clock rate) and converted into digital words (8 bits). A buffer unit reduces the data rate and makes storage on tape possible. The recorded information is restricted to the signals of targets and small surrounding area by a variable gate. The evaluation is done with ALGOL or FORTRAN computer programs. The method of evaluation depends on the kind of target. Correlation functions and power spectral densities are calculated for two-dimensional targets as ground clutter and weather clutter. Mean values and probability densities of charac, teristic values are computed for single targets as aircraft, helicopters, and bird echos.

Published in:

IEEE Transactions on Audio and Electroacoustics  (Volume:18 ,  Issue: 4 )