pulse integration

Discrete Fourier Transform ( DFT) is used to realize the coherent integration, which improves the relative ambiguous frequency estimation precision of coherent pulse group. This algorithm has low computational complexity and high estimation precision for Doppler frequency rate-of-change.

针对单载频雷达脉冲信号，提出了基于相关的脉冲群间多普勒频率变化率高精度估计算法，通过离散傅立叶变换实现了相参积累，提高了相参脉冲群相对模糊频率估计精度。

This paper presents the pulse signal spectrum bandwidth using Romberg numerical integration algorithm under a certain energy wastage required. A reconstruction signal is obtained by Fourier Series, and the optimum bandwidth of the measurement system is also presented.

本文用Romberg数值积分法计算出在一定能量损耗限值要求下的脉冲信号频谱宽度，并用付氏级数对其进行了信号重构验证，据此得出了脉冲信号测试系统带宽的最佳值。

Based on the current array CCD image sensor technology, the integration time for each pixel sensitive unit in the CCD image sensor can be controlled independently by way of adding circuit for pixel sensitive unit addressing and integration pulse generating.

在现有面阵CCD图像传感器结构基础上，通过增加像敏单元寻址电路、光积分时间脉冲产生电路和光积分时间设定电路，使面阵CCD图像传感器每个像敏单元的光积分时间可以单独设定。

Using thrust wall pressure integration method and spring-mass-damper system method synchronously, the average thrust characteristics of a model pulse detonation engine operated in variety frequencies were investigated experimentally.

同时采用推力壁压力曲线积分法和弹簧-质量-阻尼系统法对一PDE模型机在不同频率多循环工况下的平均推力特性进行实验研究。

However, in calculating the range nominal resolution of rectangular pulse signals using conventional definition formula, quadrature operation for range ambiguity function or infinite integration for "SIN" function is required.

然而，对矩形脉冲信号来说，按常规定义式计算距离名义分辨力，需要距离模糊函数的积分运算或对正弦函数进行无穷积分，这些积分运算往往较为复杂或为不定值；