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In order to speed up the rapid development of unmanned platform technology, in addition to the overall design of unmanned surface ships, the US Navy also specializes in researching key technologies for unmanned surface crafts, one of which is to solve unmanned surface boats. Stabilization, navigation and collision avoidance issues. This system is based on the shipboard helicopter deck motion prediction system, combined with the development of navigation and stability systems for helicopters and underwater unmanned aerial vehicles. It responds to radar and deck motion data, directs the unmanned surface craft's propulsion and attitude control systems to react, thereby changing the steady state or heading of the unmanned surface craft.
In terms of the power of the unmanned surface craft, due to the reliability of the diesel engine and the high thermal efficiency of the oil, the application is extensive. The main supplier of US Navy unmanned surface craft engines is Yanmar Marine. The company offers a range of diesel engines with a maximum output of 720 hp. The company's latest diesel engine uses an electronic engine management system to monitor and regulate engine speed, turbocharger, cooling temperature and throttle, and adjusts EFI time and fuel flow to ensure complete combustion of fuel and maximum fuel thermal efficiency in the working environment. In addition, the United States is also researching a high-energy-density power source that promotes diesel engines as part of a hybrid system, supplemented by lithium battery packs and other possible power sources to provide unreliable high-reliability and low-maintenance for unmanned surface craft. The engine is guaranteed to operate continuously for up to 2 weeks without refueling in the marine environment and in the harsh sea conditions.
In autonomous maritime navigation systems, the United States integrates three-dimensional digital imaging, artificial intelligence, and sensor fusion technologies to improve the autonomy of unmanned surface crafts when working alone or in collaboration with other platforms. This product uses some CCD sensors and multi-dimensional digital processing algorithms to determine the location of the unmanned surface craft, detect and identify nearby targets, and provide other situational awareness information.
There is also a technique called VXZ imaging, which is based on a related algorithm called "machine eye". Based on the information provided by the digital camera, the "machine eye" can generate a three-dimensional space and a target model. For images taken from different angles, the "machine eye" can determine the distance to the target using the image generated by the parallax.
It should be said that today, unmanned surface boats have just entered the fast-growing channel. With the advancement of technology, unmanned surface boats will surely attract more attention from the state and play an increasingly important role in the increasingly lively offshore battlefield.