A method of velocity estimation using composite hyperbolic frequency-modulated signals in active sonar

作者：Wang Fangyong^*; Du Shuanping; Sun Wei; Huang Qiang; Su Jiao

来源：Journal of the Acoustical Society of America, 2017, 141(5): 3117-3122.

DOI：10.1121/1.4982724

This paper proposes a method to estimate the target velocity using a combination of two hyperbolic frequency-modulated (HFM) signals. The Doppler-shifted time-delay between the two signals compared with the original time-delay is used to estimate the target velocity. One finds that a HFM with an increasing frequency sweep (positive HFM) and one with a decreasing frequency sweep (negative HFM) yield a different time. And a better Doppler estimation can be obtained by using a negative HFM signal followed by a positive HFM signal than the other way around. The method is applied to real data and performance is demonstrated via simulated data.

• 出版日期2017-5
• 单位中国船舶重工集团公司第七一五研究所