By Topic

Theory of radar information

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)

Radar is a system of measurement rather than communication, yet it is quite possible to apply information theory to it, in order to see whetherc the very small received signals inherently contain as much information as those of an ideal communication system working at the same signal-to-noise ratio (SNR). It turns out that they do, very nearly, but this is not r eally what makes radar a suitable topic for this symposium. The main interest is in the type of coding it represents. Shannon has pointed out that when the natural number of dimensions of a message is artificially increased by mapping non-topologically into a signal space of higher dimensions, a marked threshold effect is produced. Radar exhibits such a threshold particularly well and it is to this that I wish to direct attention. It is seen that there are in radar two quite different conditions of reception. There is ambiguous reception in which the information rate is high and the intelligibility low, and there is unambiguous reception in which the information rate is low but intelligibility is high. It would therefore appear that merely to evaluate quantities of information, and compare them with the ideal limits is not adequate guide to the behavior of a communication system.

Published in:

Transactions of the IRE Professional Group on Information Theory  (Volume:1 ,  Issue: 1 )