Abstract: Three algorisms are commonly used for underwater acoustic signal parameter estimation: 1.the method of measuring signal frequency requency with the ratio of maximum spectrum line to submajor spectrum line;2.the signal retransmission is to send the received signal with added feature information;3.the matched filter is to carry out convo-lution of matching function and received signal to determine the receiving signal.The latest real-time embedded development platform NI-CompactRIO and the Labview development environment are selected to implement the above three algorithms.Experimental results prove the correctness of the algorithms,and verify the feasibility of NI-Com-pactRIO platform.