time width中文什么意思

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1. The main content and creative work in this dissertation include : ( 1 ) the characteristics of the lfm signals with band width equaling 5mhz , time width in 9 s ~ 42 s , nlfm signals with band width equaling 5mhz , time width in 9 s ~ 21 s are analyzed in frequency domain pulse compression . the corresponding side - lobes suppression filters are designed and optimized
   本文完成的主要工作和创新之处有: ( 1 )分别完成了对带宽为5mhz ,时宽在9 s ~ 42 s范围内lfm信号,带宽为5mhz ,时宽在9 s ~ 21 s范围内nflm信号的频域脉冲压缩的分析和旁瓣抑制滤波器的设计及优化。
2. This system can process linear frequency modulation signals ( lfm ) , nonlinear frequency modulation signals ( nlfm ) and taylor quadriphase code signals with time width under 42 s and band width under 5mhz . the experimental results demonstrate that the specification characteristics meet the requirements of practical radar systems
   该系统可处理时宽在42 s以内?带宽在5mhz以下的线性调频信号( lfm ) ,非线性调频信号( nlfm )和taylor四相码信号,且技术指标完全满足实用系统的设计要求。
3. Generating lfm / nlfm signals whose intermediate frequency is 28mhz and bandwidth is 3mhz and 5mhz and time width is from 6us to 300us based on dds has been discussed in this dissertation . the conclusion is that the wave quality of lfm signal generating through dds is satisfactory and that of nlfm is not perfect
   本文基于器件dds对产生中心频率为28mhz 、带宽为3mhz和5mhz 、时宽从6us到300us的不同时宽和带宽的线性和非线性调频信号方面进行了探讨，得出了dds产生线性调频信号（ lfm ）的波形质量可取得满意的结果，但对产生非线性调频信号（ nlfm ）的波形质量却存在不足。