第四章给出了基于频率步进信号的SAR回波信号模型。
In the fourth chapter, the model of the SAR echoed signal with stepped frequency signal is presented.
将频率步进信号的多普勒特性分解为几个基本因素，详细分析了各部分对合成处理距离输出的不同影响。
The Doppler character of the frequency stepped signal is resolved into several elements, and the influence of every element on synthesized range output is analysed in detail.
步进电机是一种数字控制电机，它将脉冲信号转变成角位移，电机的转速由脉冲信号频率决定。
Stepper motor is a motor controlled by digital signal, which converts pulse signal into Angle displacement. The wheeling speed is controlled by the frequency of pulse signal.
首先，给出了宽带雷达信号具有高分辨能力的直观解释，推导了频率步进雷达合成高分辨一维距离像的通用数学表达式。
First, the basic expression of high-resolution one dimensional range profile of the stepped frequency (SF) is deduced to explain the high resolution of the wideband signals.
本文主要针对毫米波导引头频率步进体制的信号处理技术进行了研究。
In this thesis the signal processing of stepped frequency system which applied in the millimeter wave seeker is discussed particularly.
首先基于相位对消原理提出一种适用于扩展目标的步进频率雷达信号处理方法。
A phase cancellation method is presented for extended targets processing in stepped frequency radar.
现代雷达为获得较高的距离分辨力通常采用编码频率脉冲串信号和步进频率脉冲串信号，但都存在数据率低和较为严重的距离-多普勒耦合问题。
But these signal problems of range-Doppler coupling and low data ratio are still not solved completely although some encouraging results have been obtained and applied in the radar system design.
同时，结合相位编码步进频率信号形式提出在高速目标情况下实现精确速度测量的两步估计方法。
Simultaneously, the method implementing precise velocity estimation in two steps associative with PCSF signal characteristic under high moving targets is presented.
除目标速度以外，为毫米波频率步进雷达提供频率信号的频率源的色散特性也会对雷达分辨率造成恶化影响。
Apart from target velocity, the dispersion of frequency synthesizer providing signals to radar also deteriorates the performance of radar.
最后，分析了参差脉冲重复间隔步进频率信号的低截获概率特性。
Finally, the Low Probability of Intercept (LPI) of SPRI-SF radar signal is analyzed.
测速传感器选用步进电机测速形式，测速传感器向秤重仪表发出系列脉冲信号，每个脉冲代表皮带行程的一个单位，脉冲频率和皮带速度成正比。
Choose stepping motor speed sensor speed form, to speed sensor weighed instrument issued a series of pulses, Each pulse represents one of the units.
本文讨论了步进频率编码信号的模糊函数，提出了一种正负步进频率编码信号及其处理方法。
The ambiguity function of step frequency coded signal is discussed. An up-down step frequency coded signal waveform is designed with its processing method.
与步进频率信号在高速目标下成像失真相比，相位编码步进频率信号的多普勒性能有很明显改善。
Compared with the range profile distortion produced by SF signal in the presence of high moving targets, PCSF signal Doppler performance is obviously improved.
步进频率信号是一种以增大信号带宽为代价来提高雷达距离分辨力的宽带信号。
Steppedfrequency signal is a broad band signal which enhances range resolution of radar at the cost of increasing bandwidth.
步进频率信号是一种以增大信号带宽为代价来提高雷达距离分辨力的宽带信号。
Steppedfrequency signal is a broad band signal which enhances range resolution of radar at the cost of increasing bandwidth.
应用推荐