海道测量船测深仪的回波丢失问题

The problem about echo loss of the depth sounder of the survey ship

本文阐述了中型海道测量船上ＳＣ－ⅣＡ型回声测深仪在使用中出现回波丢失异常情况，通过实船走访用户后，进行了多次研究，确认故障原因，提出了解决方案。

In designing a medium class survey ship, in order to solve the problem of echo loss happened to the type SC-ⅣA depth sounder ,the author consulted the user of this instrument ,did research work ,finally found the reason behind this problem and proposed the counter measure method.