Phenol Terminated Silicone Fluid Polydimethylsiloxane with phenol light group end-capping or main chain containing phenol light group belongs to phenol modified silicone oil. The phenolic group in the modified silicone oil molecule has high reactivity and heat resistance, so its emulsion has good stability and wide application. If amino-modified silicone oil is mixed with phenol-based modified silicone oil, it can be compounded into a synthetic fiber oil with excellent heat resistance and mold release. Phenol Terminated Silicone Fluid,Polydimethylsiloxane Silicone Oil,Phenol Terminated Polydimethylsiloxanes,Phenol Terminated Linear Polydimethylsiloxanes Suzhou Cheerchem Advanced Material Co., Ltd. , https://www.szcheerchem.com
Long Rang Ultra Short Base Line (LR-USBL) is a mobile target that uses underwater acoustic positioning technology to achieve positioning, tracking and data transmission for underwater targets with a depth of 4 km, such as AUV and UUV. Underwater stereo positioning system. From May 20th to May 24th, 2006, the “Five-Year†863 Program Marine Resources Development Technology Theme “Development of Long-Range Ultra-Short Baseline Positioning System†was the first set of long-range ultra-short baseline positioning developed by the South China Sea in China. The system "has successfully conducted a deep sea test.
The system was jointly developed by Harbin Engineering University and the State Oceanic Administration. After nearly 4 years of hard work, it has broken through high-precision time-measuring direction finding, high-performance underwater acoustic transducer array, complex signal encoding and long-range underwater acoustic communication. Digital signal processing hardware and software and other technical difficulties, with independent intellectual property rights. The test results show that the test equipment developed by the subject is stable and reliable. The system has a working depth of more than 3,700 meters and a working distance of 8.6km. It has an underwater dynamic target tracking function with a positioning accuracy of 0.2-0.3% slant range, exceeding the predetermined assessment index and reaching international standards. Advanced level. The system has the advantages of small size, high precision and convenient use. It can be widely used in deep sea or ocean resources survey, exploration and development, ocean engineering and underwater operations, etc., to establish a three-dimensional high-precision positioning system in China to solve water. Technical equipment is provided for the deep positioning and high-precision positioning of the job.