Vibroseis Signal Design Method Based on m Sequence Coding Pulse Signal
Chirp signal is a most basic and most used linear sweep.While the vibroseis which uses chirp signal has two obvious weaknesses: one is that chirp signals side lobe which makes the correlated waves distinguishability lower is large on the profiles; another is that the scanning time and energy are same for different frequency secments in linear sweep, while the high frequency is damped extremely through the -round, and the SNR (Signal-Noise-Ratio) of high frequency segment will b e lowering, as a resu It the exploration distinguishability will b e affected. In this paper, by using the pseudo-random m sequence with ideal autocorrelation to code pulse signal,we complete the design of vibroseis signal.The result of the autocorrelation by m sequence code scanning signal shows that the distincuishability of vibroseis improve greatly.
Vibroseis M Sequence Coding Pulse Signal Distincuishability
Chunze Wang Xinsen Zeng Chaolin Lv Haichuan Yang Xuyi Ma
College of Instrumentation & ElectricalEngineeringjilin University, Changchun 130026 College of Instrumentation & Electrical Engineeringjilin University, Changchun 130026
国际会议
南京
英文
380-382
2012-08-16（万方平台首次上网日期，不代表论文的发表时间）