lofar谱matlab_lofar是什么意思1. A new method is presented in this paper for the calculation of waveguide invariant with passive sonar lofargram image.摘要该⽂提出了利⽤被动声纳信号LOFAR谱图的⼆维傅⾥叶变换计算波导不变量的⽅法。several什么意思2. S...