Reflection signals and high velocitynoise change in amplitude and waveform with increasing offset between source and receiver.
反射信号和高速干扰的振幅和波形随着炮检距的增大而变化。
2
The SPRD will automatically open as the air pressure in the duct system increases, in order to prevent the reduction of air flow and excessive noise and velocity through the duct system.
当管道系统空气压力增加时，SPRD会自动开启，以防止管道系统中空气流动的减少和过度噪音和速度。
3
The preconditions to make best use of the Doppler radar data includes the noise removing, velocity ambiguity distinguishing, horizontal wind field retrieving and exactness verifying.