| 查看: 511 | 回复: 2 | ||
| 当前主题已经存档。 | ||
| 【悬赏金币】回答本帖问题，作者cjhycy将赠送您 10 个金币 | ||
cjhycy木虫 (正式写手)
|
[求助]
英译汉一小段
|
|
|
请高手帮忙： An alternative method of determining the site impedances is to calculate an impedance estimate for each time-frequency element. This gives an estimate of the instantaneous impedance for any spectral frequency at any time. The total impedance map can therefore be referred to as an ‘evolutive impedance’, just as a TFD spectrum is referred to as an evolutive spectrum. Since the impedance is a site function and is expected to be constant for the recording time, the instantaneous impedance estimates in any spectral frequency can be statistically reduced to a single impedance estimate equivalent to that produced by the stationary analysis of a stationary M T data set.Due to its robustness to non-normal distributions and outliers, the median was used to estimate the impedance amplitudes. The mode was used to estimate the phases, as the wrapping on the unit circle hides the wings of the distribution and even the median will generally result in biased estimates. We can therefore refer to this statistical estimate taken from the evolutive impedance distribution as a ‘stationary impedance’ estimate. |
回复此楼» 猜你喜欢
现代”学阀”该如何界定
已经有12人回复
-
国社科系统bug了，是不是要放榜了？
已经有10人回复
-
课题组招2027级博士 上海工程技术大学 激光智能制造方向
已经有4人回复
-
上海工程技术大学 激光智能制造课题组 2027级博士研究生招生
已经有3人回复
-
上海工程技术大学激光智能制造课题组｜2027级博士研究生招生公告
已经有11人回复
-
我的奶奶
已经有3人回复
2楼2008-09-11 20:32:45
cjhycy
木虫 (正式写手)
- 应助: 0 (幼儿园)
- 金币: 2213
- 散金: 5
- 帖子: 393
- 在线: 72.4小时
- 虫号: 446669
- 注册: 2007-10-29
- 性别: GG
- 专业: 应用地球物理学
3楼2008-09-11 20:54:55