NDLI: Frequency coded waveforms for enhanced delay-Doppler resolution

Content Provider	IEEE Xplore Digital Library
Author	Chieh-Fu Chang Bell, M.R.
Copyright Year	2002
Description	Author affiliation: Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA (Chieh-Fu Chang; Bell, M.R.)
Abstract	In this research, we propose techniques for the construction of frequency coding sequences that give rise to frequency coded waveforms having ambiguity functions with a clear area-containing no sidelobes-in a connected region surrounding the main lobe. In this sense, the proposed sequences have excellent delay-Doppler resolution properties and achieve locally optimal ambiguity functions in the region surrounding the main lobe. These sequences are called pushing sequences. First, two important properties of pushing sequences are investigated: the group D/sub 4/ dihedral symmetry property and the frequency omission property. We also note that Costas sequences have these two properties and the implications of this are investigated. Next, we show how to construct pushing sequences having ambiguity functions with arbitrary-size clear areas. Finally, we analyze the sidelobe distribution and provide the general form of all sidelobe peak positions, and both the lower and upper bound of each sidelobe peak level.
Sponsorship	IEEE Los Angeles Council IEEE Aerospace & Electron. Syst. Soc. Northrop Grumman Corp. Raytheon Co
Starting Page	160
Ending Page	167
File Size	480184
Page Count	8
File Format	PDF
ISBN	078037357X
DOI	10.1109/NRC.2002.999714
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-04-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Propagation delay Pulse measurements Signal resolution Equations Image analysis Signal analysis Upper bound Delay systems Density measurement
Content Type	Text
Resource Type	Article

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