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Graphical derivations of radar, sonar, and communication signalsThe designer of a communication system often has knowledge concerning the changes in distance between transmitter and receiver as a function of time. This information can be exploited to reduce multipath interference via proper signal design. A radar or sonar may also have good a priori information about possible target trajectories. Such knowledge can again be used to reduce the receiver's response to clutter (MTI), to enhance signal-to-noise ratio, or to simplify receiver design. There are also situations in which prior knowledge about trajectories is lacking. The system should then utilize a single-filter pair which is insensitive to the effects induced by relative motion between transmitter, receiver, and reflectors. For waveforms with large time-bandwidth products, such as long pulse trains, it is possible to graphically derive signal formats for both situations (trajectory known and unknown). Although the exact form of the signal is sometimes not specified by the graphical procedure, the problem in such cases is reduced to one which has already been solved, i.e., the generation of an impulse equivalent code.
Document ID
Document Type
Reprint (Version printed in journal)
Altes, R. A. (ESL, Inc. Sunnyvale, Calif., United States)
Titlebaum, E. L. (Rochester, University Rochester, N.Y., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Publication Information
Publication: IEEE Transactions on Aerospace and Electronic Systems
Volume: AES-11
Subject Category
Distribution Limits