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2 results about "Standard array" patented technology

In coding theory, a standard array (or Slepian array) is a qⁿ⁻ᵏ by qᵏ array that lists all elements of a particular 𝔽qⁿ vector space. Standard arrays are used to decode linear codes; i.e. to find the corresponding codeword for any received vector.

Circuit board and circuit board assembly

The present disclosure provides circuit board, including array connection points arranged in connection point array, and array holes arranged in hole array, with at least part of the array connection points electrically connected to at least one of array holes. Standard array and virtual array, which have same structures, are defined in circuit board, and corresponding structural directions in standard array and virtual array are parallel to each other; each array connection points is located at corresponding standard point position in standard array; hole array includes standard array holes and at least one offset array hole; each of standard array holes is located at corresponding virtual point position in virtual array; and first side of each offset array hole is adjacent to first lead, and offset array hole deviates from corresponding virtual point position in virtual array towards second side opposite to first side by first predetermined distance.
Owner:ZTE CORP

Cement ring thickness real-time calculation method, device, equipment, medium and product

The application discloses a cement ring thickness real-time calculation method, device, equipment, medium and product, and relates to the field of geophysical casing well acoustic logging, wherein the method comprises the following steps: waveform extraction, frequency domain feature extraction and Stoneley wave parameter calculation are performed on standard array acoustic wave data to obtain corresponding processing data; the processing data is taken as sample data, and the open hole caliper corresponding to the standard array acoustic wave data is taken as label data to form a training sample set; a caliper prediction model is obtained by training the training sample set; waveform extraction, frequency domain feature extraction and Stoneley wave parameter calculation are performed on real-time acquired measured array acoustic wave data to obtain processing data corresponding to the measured array acoustic wave data, and the processing data is input into the caliper prediction model for prediction to obtain real-time predicted caliper; and the cement ring thickness is calculated in real time in combination with a standard casing outer diameter. The application realizes real-time prediction of the cement ring thickness based on multi-data driving.
Owner:CHINA OILFIELD SERVICES LTD