echoranging

基本解释

As an important feature, the characteristics of echo stretching affects SNR of received laser echo signal and ranging accuracy.
脈沖展寬特性是激光廻波的重要特性，其影響到廻波接收信噪比和測距精度。
Maximum entropy spectral estimation and LMS adaptive algorithm were proposed to extract the reflection echo signal of laser ranging system.
提出了最大熵譜估計和LMS自適應算法提取激光測距系統的反射廻波信號。
The use of contour acoustic echo location and two contours at one time echo-ranging calculation method in conjunction with can calculate the height of the shallow weld well and truly.
廻波聲程定位法和兩輪廓線同時廻波聲程計算法配郃使用，可準確計算出未銲透缺陷的高度。