A realization of diversity waveform sets for delay-Doppler imaging

Author

Tseng, Shu-Ming ; Tseng, Der-Feng ; Huang, Guan-Fu ; Tzeng, Yuan Ching ; Wen-Chi, Tseng

Author_Institution

Dept. of Electron. Eng., Nat. Taipei Univ. of Technol., Taiwan

Volume

1

fYear

2004

fDate

6-9 Dec. 2004

Firstpage

237

Abstract

A realization of transmitting multiple radar waveforms and coherently combining multiple ambiguity functions is proposed. We propose to use the concept of synchronous code-division multiple access (CDMA) to do so. The spreading sequences are chosen to be orthogonal such as Walsh-Hadamard sequences. Multiple radar waveforms are synchronously transmitted by using orthogonal spreading sequences. Since they are transmitted at the same time and the same frequency, the respective received signals are affected by the same time delay and Doppler frequency shift. Therefore, coherent combining of low-resolution multiple ambiguity functions to get a high-resolution composite ambiguity function is now feasible.

Keywords

Doppler radar; code division multiple access; diversity reception; radar imaging; Doppler frequency shift; Walsh-Hadamard sequence; delay-Doppler imaging; diversity waveform set; high-resolution composite ambiguity function; low-resolution multiple ambiguity function; multiple radar waveform transmission; orthogonal spreading sequence; synchronous code-division multiple access; time delay; Diversity reception; Doppler radar; Frequency division multiaccess; Matched filters; Multiaccess communication; Propagation delay; Radar imaging; Radar scattering; Surface waves; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on

Print_ISBN

0-7803-8660-4

Type

conf

DOI

10.1109/APCCAS.2004.1412736

Filename

1412736