The chirp and apodization characteristics of long-period grating (LPG) are analyzed, and the theoretic foundation of adjustable gain flattening filter based on LPG is provided.
分析了长周期光纤光栅(LPG)的啁啾特性和切趾特性，给出了基于LPG的增益平坦滤波器可调的理论依据。
This paper gives a detailed account of the waveform, matched-filter, fuzzy function, resolution in speed, resolution in range and the capacity of anti-interference of the Chirp signal.
本文详细介绍了以下几个方面：线性调频信号的波形、匹配滤波器、模糊函数、速度分辨力、距离分辨力及抗干扰能力；
This article has designed an elliptic low pass filter for the generation of base band signals in a wideband chirp source.
对宽带线性调频源中基带信号产生时所用的低通滤波器进行了设计。
The transmission spectrum bandwidth increases with the chirp parameter, while the transmission decreases, which leads to worse filter feature;
②随着啁啾系数增大，透射谱带宽增大，透射率降低，滤波性能变坏；
For the problem of the parameter estimation of multi-component chirp signal in the additive colored noise, a method based on phase difference and time-frequency signal filter was proposed.
针对加性色噪声背景下的多分量线性调频信号参量估计问题，提出了基于相位差分的时频子空间方法。
Further study is made on target velocity measurement of radar, double-channel filter method and another one which based on chirp up and chirp down signal are discussed.
对雷达测速方法作了较为深入的研究，讨论了双通道测速法和正负斜率线性调频脉冲测速法。
Further study is made on target velocity measurement of radar, double-channel filter method and another one which based on chirp up and chirp down signal are discussed.
对雷达测速方法作了较为深入的研究，讨论了双通道测速法和正负斜率线性调频脉冲测速法。
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