On this day, 31 years ago, on November 10, 1994 (October 8, 1994, the lunar calendar), my country's first cableless underwater robot was introduced. On November 10, 1994, my country's first cableless underwater robot was successfully developed. At that time, experts believed that the functions and main technical performance indicators of the robot named "Explorer" had reached the international advanced level of similar underwater robots in the 1990s. It is reported that the "Explorer" was successfully developed over four years by Shenyang Institute of Automation of China Academy of Sciences, 702 Institute of China Shipbuilding Industry Corporation, Institute of Acoustics of the Chinese Academy of Sciences, Harbin Institute of Technology, Shanghai Jiaotong University and other units. According to experts, underwater vehicles can be divided into manned underwater vehicles (HOVs) and unmanned underwater vehicles. Among them, unmanned underwater vehicles are divided into two categories. One type is a wireline underwater vehicle, which is customarily called a Remote Operated Vehicle (ROV); The other type is a cableless underwater vehicle, which is customarily called an Autonomous Underwater Vehicle (AUV). The "Explorer" cable-less underwater robot is the first cable-less autonomous underwater robot developed by my country. This robot is one of the key model development tasks deployed in the automation field of the national "863 Plan". It dives to a depth of 1000 meters and has a range of movement of up to 12 nautical miles. It can be normally recovered under fourth-level sea conditions and can search for targets in designated sea areas. It records data and sonar images, can observe, take photos and record the wrecked target, and can automatically avoid obstacles. It has underwater acoustic communication capabilities, and can transmit the required data and images to the water surface monitoring station for display. The "Explorer" cableless underwater robot has three computers on the water surface, namely a main control computer, a positioning computer and an image recovery computer. The main control computer provides a remote operation interface for the carrier system, a programming interface for the autonomous route, and a monitoring interface for the status of the carrier system, realizing human-computer interaction. At the same time, the GPS global positioning system data is obtained to calculate the position of the mother ship. In this way, the carrier can be depicted in the chart. The track in the geographical coordinate system. The image recovery computer processes the compressed TV signal sent by the main control computer and restores it. Looking back at history, the development of underwater robots in my country began in the 1970s and 1980s. my country's first underwater robot,"Hairen-1", was successfully developed in 1986 by the Shenyang Institute of Automation, Chinese Academy of Sciences. At present, China has established the "Dragon Family" of ocean exploration represented by the Jiaolong manned submersible, the "Hailong" unmanned cable-less submersible and the "Qianlong-1" unmanned cable-less submersible.