tidal signal meaning in English

潮位信号
潮汐信号

However , the application of global tidal model to the study of shallow sea tides is much worse in the accuracy . tidal signal in topex / poseidon altimetric data is the largest contributor to sea surface height variability and accounts for more than 80 % of the signal variance . so it is urgent to develop tide model in the shallow area wi th high accuracy
潮汐是高度计资料海面变化中最大的成份，占总变化80以上，伴随着卫星高度计资料在海洋研究中的广泛应用，发展基于卫星高度计资料的高精度浅海潮汐模型成为进一步利用高度计资料研究其它物理海洋问题的基础。