Among those technologies such as shear wave exploration, P-S converted waves, multi-component seismic, VSP, P-wave AVA, AVO, AVOZ and VVA, the most effective method in detecting fractures is shear-wave splitting.

The beam of VHF radar is rather wide,and the reflection from ground results in beam split,thus the radar can only be used to estimate its height while it cannot be used to measure the height accurately.

In this paper,the effect of landform on the heightfinding method based on beam split in VHF Radar,namely,phase comparison and amplitude comparison,is studied.

To resolve this problem,the paper proposes an accurate and effective method for measuring the altitude based on beam split,namely,Phase-comparison and Amplitude-comparison.

The deepwater net-cage acoustic monitoring scheme described in this paper can monitor the feeding and growing of the reared fish in real time and can evaluate the total biomass increasing in the cage at all times,by using high frequency,narrow impluse,split beam and computer technology.

Length-extension target recognition method is discussed on active high-frequency (20～35kHz)sonar in this paper, and target short-time bearings feature extraction method is put forward by adaptive structure under splitting beam system.

Target dimension recognition method is researched based on underwater high frequency echo highlight bearings feature by using splitting beam.

The characteristics of array signal for splitting beam are analyzed,the definitions and working principles of the one dimensional and dual dimensional for the HyperBeam are discussed,and the signal processing method based on the dual dimensional HyperBeam frequency domain detection in the active array signal processing is presented in the paper.