A Novel Semianalytic Algorithm for Cosine Transform in ATEM Measurement
A Novel Semianalytic Algorithm for Cosine Transform in ATEM Measurement
复制标题
ATEM测量中余弦变换的新型半解析算法
DOI:
10.1109/lgrs.2018.2871833
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发表时间:
2019-02
影响因子:
4.8
通讯作者:
Hongnian Wang汪宏年
中科院分区:
文献类型:
--
作者:
Shouwen Yang(杨守文);Shihan Shen;Yugang Ma(马玉刚);Hongnian Wang汪宏年
First, we directly introduce the cosine transform to compute the time-domain electromagnetic (EM) response excited by cause step turnoff. Then, we advance a novel semianalytic algorithm based on integration, summation, and cube spline interpolation (ISCSI) method to efficiently accomplish the cosine transform. The ISCSI method divides the integral into a sum of partial integrals, which can be solved by cube spline interpolation combined with Newton–Leibniz formula. On the basis, we apply a known convolution method to further compute the time-domain response by arbitrarily waveform in airborne transient EM measurement. Finally, numerical tests valid the ISCSI method is easier to implement and more efficient than the traditional digital filter method because the ISCSI method only requires less frequency sampling amount to accomplish the cosine transform.
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影响因子:
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影响因子:
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