Design and analysis of new p(n,k) polyphase pulse compression codes

Author

Felhauer, Tobias

Author_Institution

Res. Group for RF Commun., Kaiserslautern Univ., Germany

Volume

30

Issue

3

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

865

Lastpage

874

Abstract

P(n,k) codes as a new class of polyphase pulse compression codes are introduced and analyzed in detail. The P(n,k) codes are conceptually derived by step approximation of the phase function of a nonlinear-frequency modulated (NLFM) Chirp signal with a favorable energy density spectrum. The significant advantages of P(n,k) codes over conventional polyphase codes are lower autocorrelation sidelobes and an improved tolerance of low Doppler shifts and precompression bandwidth limitations. The primary disadvantage of the P(n,k) codes over conventional codes is a loss in range resolution. The uniform P(n,k) codes are especially attractive for radars employing digital signal professing because their favorable correlation properties also remain when quantization effects are taken into account

Keywords

codes; coding errors; correlation methods; radar theory; Doppler shifts; P(n,k) codes; autocorrelation sidelobes; correlation; digital signal; energy density spectrum; nonlinear-frequency modulated chirp signal; phase function; polyphase codes; polyphase pulse compression codes; precompression bandwidth limitations; quantization effects; radars; range resolution; step approximation; Autocorrelation; Bandwidth; Chirp modulation; Doppler radar; Doppler shift; Energy resolution; Modulation coding; Phase modulation; Pulse compression methods; Signal resolution;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.303755

Filename

303755