However, in respect of a vibration acceleration signal, the signal to noise ratio (SNR) is often so small that the periodic impulse component is submersed in its intense background noises.
Comparing with impulse radar, this method can greatly improve the signal to noise ratio (SNR), the convergence speed is quick, and iterative times are less than 10.
与冲激雷达相比，这种方法能显著提高信噪比，并且这个方法的收敛速度快，一般迭代10次以内即达到稳定。
3
When the expansion ratio becomes larger, both thrust and specific impulse will increase.