This paper examines various factors that effect the accuracy of radar measurement of ocean wave height from space, with particular emphasis on the effect of pulse width. It is shown that at a given signal-to-noise ratio, large or small, there is a pulse width that yield an optimal ...
Range resolution is the ability of a radar to separate two targets that are close together in range and are at approximately the same azimuth. The range resolution capability is determined by pulse width.A radar pulse in free space occupies a physical distance equal to the pulse width multiplied...
Pulsewidth versus required SNR for three different detection range values.img 在开发雷达模拟时,式(1.57)在以下意义上非常有用。雷达系统通常利用有限数量的脉冲宽度(波形)来完成所有指定的操作模式。其中一些波形用于搜索和检测,其他波形可用于跟踪,而有限数量的宽带波形可用于识别目的。在搜索操作模式中,例如...
The pulse duration is called the “pulse length”, and is measured in micro-seconds. The pulse length is usually called Pulse Width in radar systems. These listening times represent one pulsed radar cycle time, normally called the interpulse period or (IPP) or pulse repetition interval (PRI)....
One in an interrogator and another in a transponder, reduce peak power by simultaneously transmitting to each other a maximum pulse width equal to the varying transmission time between them. Although difficult to visualize or to analyze intuitively on a continuous basis, system operation may be ...
Synthetic aperture radar (SAR) image formation. In SAR, the radar pulse width determines the illumination in the range direction, and the antenna beam width determines the illumination in the cross-range direction (see figure). When the antenna arrives at position 1 and partially illuminates the ...
The pulse width or duration is an important factor. The radars operate by “binning” the receive signals. The receive signal returns are sorted into a set of bins by time of arrival relative to the transmit pulse. The time interval is in proportion to the round-trip distance to the object...
); % range to horizon in meters SLv = 10.0^(SL/10); % radar rms sidelobes in volts sigma0v = 10.0^(sigma0/10); % clutter backscatter coefficient tau = 1/b; % pulse width deltar = clight * tau / 2.; % range resolution for unmodulated pulse %%%%%%%%%%%%%%%%%%%%%%%%%%...
rain interference(雷达显示) 雨滴干扰 velocity azimuth display (雷达用) 速度方位显示器 global clock (脉冲) 全局时钟 masthead mounted (雷达收发机装于雷达天线架上) 桅装 width of transition steepness (脉冲) 前沿陡度 lens factor (透镜光学分辨能力) 透镜因数 pulse width control (选通脉冲) 脉宽调整 ...
pulse. Matched filtering is often done in the frequency domain because convolution in the time domain is equivalent to multiplication in the frequency domain, making the process faster. Because the initial pulse is time-reversed, the filtered output is delayed by the pulse widthT, which is 1 ...