If the p--waveNMO-correction formula is applied to the NMO correction of P-S converted wave in the velocity analysis,the shallow seismic data of big--offset traces can not be nicely corrected to result in unfavourable influence on velocity analysis and following stack image.

Many methods on wide-angle reflection NMO correction is used to truncation of Taner expansion.

Optimized 6~(th) order NMO correction for long-offset seismic data;

Application of wide angle reflection in seismic acquisition in complex mountainous area.;

NMO method of wide angle reflection with truncation error correction;

And the techniques such as wide angle reflection information extraction, interacted dynamic NMO correction muting in CMP super-gather, are first brought forward in Jianghan.

Recently, more and more people focus on the wide angle reflection(WAR), which is a very important way of obtaining high quality seismic data by exploring in fields.

A seismic survey method called wide angle reflection(WAR) used for exploration of weak reflectors below shielded layer of high velocity was described in this paper.