The ambiguity function of PN-chirp pulse signal

Author

Liu, Jing ; Zhao, Huichang ; Zhu, Yanping

Author_Institution

Dept. of Electron. Eng. & Optoelectron. Technol., Nanjing Univ. of Sci. & Technol., Nanjing, China

fYear

2011

fDate

26-28 March 2011

Firstpage

543

Lastpage

547

Abstract

The power spectral density function and the ambiguity function(AF) properties of Combination of Chirp Modulation and Pseudonoise Phase Modulation (PN-chirp) pulse signal is analyzed. According to the AF definition of a given finite energy signal, the AF of PN-chirp signal is deduced, and the autocorrelation function of the signal is also obtained. The AF of PN-chirp signal and Pseudonoise Phase Modulation signal are contrasted to show the difference between the two pulse signals. Simulation results show that the AF of PN-chirp signal can be obtained by shearing an angle of the AF of Pseudonoise Phase Modulation signal; Compared with Pseudonoise Phase Modulation signal, PN-chirp signal has a better range accuracy and range resolution. The Doppler sensitivity is also significantly improved.

Keywords

Doppler radar; chirp modulation; correlation methods; phase modulation; radar signal processing; Doppler sensitivity; PN-chirp pulse signal; ambiguity function; autocorrelation function; chirp modulation; power spectral density function; pseudonoise phase modulation signal; Correlation; Density functional theory; Doppler effect; Doppler radar; Phase modulation; Signal resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Science and Technology (ICIST), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-9440-8

Type

conf

DOI

10.1109/ICIST.2011.5765309

Filename

5765309