Scanning signal automatic correction method and device based on force signal feedback
A scanning signal and signal feedback technology, applied in the field of vibroseis scanning signal, can solve the problems of complex software implementation method, insignificant distortion reduction, unclear correction target, etc. Effect
Pending Publication Date: 2021-07-20
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In order to solve the defects of complex modification, unobvious reduction of distortion between the ground response and the vibrator system and complex software implementation methods and unclear correction targets in the existing way of improving the response accuracy through hardware modification to reduce distortion, the first method of the present invention An aspect provides a scanning signal automatic correction method based on force signal feedback, including: using t i The preset scan signal value S(t i ), control the source to scan, and obtain the force signal value F(t i );
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038]In order to make the technical features and effects of the present invention more obvious, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings. The present invention can also be described or implemented in other different specific examples. The equivalent transformations done within all belong to the protection category of the present invention.
[0039] In the description of this specification, descriptions referring to the terms "an embodiment", "a specific embodiment", "for example" and the like mean that the specific features, structures or characteristics described in conjunction with the embodiment or example are included in at least one aspect of the present invention In an embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures or characte...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a scanning signal automatic correction method and device based on force signal feedback, and the method comprises the steps: controlling a seismic source to carry out scanning through employing a preset scanning signal value S(ti) at a moment ti, and obtaining a force signal value F(ti); calculating a difference signal value delta(ti) between the preset scanning signal value S(ti) and the force signal value F(ti); and according to the difference signal value delta(ti) and a preset scanning signal value S(t), calculating a correction value S'(t) of the preset scanning signal at the t moment, and replacing the preset scanning signal value S(t) at the t moment with the correction value S'(t) of the preset scanning signal at the t moment for scanning at the moment. According to the invention, full-band harmonic noise can be well suppressed, the signal-to-noise ratio of the excited seismic signal is improved, and the difference between the force signal obtained by excitation of the corrected preset scanning signal and the preset scanning signal is obviously reduced.
Description
technical field [0001] The invention relates to the field of vibrator scanning signals, in particular to an automatic correction method and device for scanning signals based on force signal feedback. Background technique [0002] When the vibrator excites the seismic signal, the scanning signal (frequency-variable time signal) controls the output energy of the vibrator system, but there is a difference between the scanning signal and the output force signal, which comes from a complex system response First of all, the scanning signal is converted into a drive. Due to the corresponding nonlinearity of the hydraulic pressure, the signal is distorted. At the same time, the hydraulic system drives the vibrator system and there is also distortion. Finally, the response of the ground and the vibrator system still have distortion. The comprehensive distortion caused by these factors is difficult to use. A simple function is described, and the result of distortion is that the output...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/36G01V1/04
CPCG01V1/36G01V1/04Y02T90/00
Inventor 骆飞张慕刚郭善力周恒于文杰
Owner BC P INC CHINA NAT PETROLEUM CORP