例句與造句

1. due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high-precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency; secondly, to apply zooming analysis via goertzel algorithm; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system . the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced . in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground
   針對(duì)存在的缺點(diǎn),本文提出了一種應(yīng)用于激光多普勒測(cè)速的高精度信號(hào)處理技術(shù),即首先利用加hanning窗的welch修正周期圖算法得到信號(hào)功率譜,搜索其譜峰值頻率,接著利用goertzel頻譜細(xì)化算法對(duì)搜索的譜峰進(jìn)行細(xì)化分析,再引入能量重心頻譜校正算法對(duì)細(xì)化后的譜峰進(jìn)行校正分析,從而將離散頻譜分析算法、頻譜細(xì)化算法和頻譜校正算法三者有機(jī)結(jié)合起來(lái),充分發(fā)揮各自的優(yōu)點(diǎn):通過(guò)加hanning窗的welch修正周期圖算法快速得到功率譜及峰值頻率,通過(guò)goertzel算法獲得分析頻帶的高分辨率頻譜,然后通過(guò)能量重心校正算法對(duì)細(xì)化后的頻譜進(jìn)行高精度校正,這樣不僅保證了算法的高效性,而且大大提高了分析的精度。
2. It's difficult to find modified periodogram in a sentence. 用modified periodogram造句挺難的