2results about How to "Reduce phase difference" patented technology

This invention relates to the field of seismic signal processing technology, specifically disclosing a method and apparatus for processing the consistency between explosive source and controlled source seismic data. The method includes: performing phase-shift filtering on controlled source data to obtain processed data; mixing and superimposing the processed data with explosive source data to generate a mixed superimposed profile; analyzing the mixed superimposed profile and the separately superimposed profile of the explosive source data to obtain optimal phase-shift filtering parameters; performing matched filtering based on the optimal phase-shift filtering parameters to obtain a matched filtering factor; and applying the matched filtering factor to pre-stack data to correct the controlled source wavelet. This invention utilizes the data adaptability of phase-shift filtering, considering the differences in seismic data caused by different excitation and reception conditions, and reduces the phase difference between the two types of source data in a time-varying and spatially varying manner. Combined with matched filtering, it further aligns the controlled source data with the explosive source data in terms of phase, frequency, and amplitude, providing better basic data for subsequent data processing.

This invention relates to the field of microwave and millimeter-wave radio frequency passive devices, specifically a waveguide full-bandwidth equal-amplitude and in-phase H-plane power divider. It includes a common-end rectangular waveguide, which intersects in the H-plane to form two branch rectangular waveguides, each including a first and a second branch rectangular waveguide. A broadband impedance matching component is disposed at the branch junction. This component includes a multi-stage stepped impedance transformation structure, a center capacitive matching protrusion, and a chamfered branch corner structure. The multi-stage stepped impedance transformation structure is arranged in the transition region between the common-end rectangular waveguide and the branch junction. This invention achieves ultra-wideband power distribution in the 40GHz to 60GHz millimeter-wave band, alleviates the impedance discontinuity problem at the branch junction, suppresses the generation of higher-order modes during transmission, reduces the amplitude and phase differences between the two output signals, and improves the device's standing wave ratio and insertion loss performance.