time-varying amplitude

In this paper, we analyzed evolutionary spectrum of chirp signals of time-varying amplitude, and proposed the method of concentrating energy in time-frequency domain to improve the concentration of evolutionary periodogram.

本文研究了时变幅度Chirp信号的演化谱，提出了分别在时间轴和频率轴上聚集能量的方法，改善了演化周期谱的能量聚集性。

Suppression of Time-varying Amplitude LFM Interference in DSSS Communication

直扩通信中时变幅度LFM干扰的抑制

Utilizing the pulse neutron generator working with controlled circuit and time amplitude converter, the ash content in coal is measured, and we provides a safe and on line methods.

通过该思路，利用脉冲中子发生器，控制电路，多道脉冲幅度分析器对煤中灰份的含量进行了测量，提出了一种实时、安全的快速检测方法。

To deal with this problem, the technique of time base correction and amplitude correction is presented in this paper.

本文即针对此问题提出了天线时域近场测量中的时基及幅度修正技术。

A new spatial polarimetric t-f ( SPTF) distribution was presented based evolutionary periodogram of chirp signals of time-varying amplitude.

同时，基于时变幅度Chirp信号的空间演化谱，提出了一种新的空间极化时频分布，用此空间极化时频矩阵代替自相关矩阵估计信号子空间和噪声子空间。

The approach is to use short-time analysis to extract the characteristics of time-varying amplitude, frequency and phase in a digital modulation signal, and applies them for simple identification.

该方法用短时分析提取数字调制信号在幅度、频率和相位随时间变化的特征，并利用这些特征对各种数字调制信号进行识别。

When the rise time of calibration-pulse is a constant, the slope of calibration-pulse is increased with the amplitude of pulse.

当校正脉冲前沿上升时间一定时，前沿陡度随着幅值的增加而变大。

Pulse amplitude to time converter

脉冲幅度时间变换器

Spatial evolutionary spectrum distribution is derived and used to estimate direction of signals which have constant or time-varying amplitude.

建立了空间演变谱分布，适用于恒幅和时变幅度的FM信号到达角估计。

Post stack cross equalization generally consists of time shift calibration, amplitude calibration, phase calibration, frequency calibration and waveform calibration.

叠后互均化处理通常包括时移校正、振幅校正、频带校正、相位校正和波形校正。