Given the velocity of low velocity layer (direct wave) and by means of the first break information of production shots and the static correcting mathematical model based on the weighted least squares and conjugate gradient method, we can calculate the static correction values of the long and the short wavelengths on the basis of iterative algorithm.

Fitting process was used in the computation of statics of long and short wavelength in domains of common shot, common receiver, and common offset, and a near surfac.

The paper presented a new method for refraction statics which can simultaneously calculate long wavelength and short wavelength.

The car body long-short wave orange peel and DOI are checked,compared and analyzed according to different color,different location by using BYK orange peel instrument and NAP instrument.

The working principle of shortwave communication, the construction of shortwave communication network in Anhui Province and the important role it has played in earthquake preparedness and disaster reduction in resent over 10 years are introduced in this paper

This thesis researches the auto-detection and recognize of morse signal which is simple and applied in the shortwave communication.

How to improve data transmission speed is the primary research direction of shortwave communication system, which is also that of other communication systems.

This paper presents a prediction model of frequency parameters of short-wave communication based on non-singleton fuzzy system.

Short-wave communication is the main means of the remote communication between ships on the sea.

This paper first introduces the evolution of adaptive short-wave communication, then presents the technologies in cooperate design of short-wave station with software radio.