www.bewet.fora.pl

loczytzn

Ocean acoustic monitoring technology

Base of the foundation work ashamed way. Multi-sonar system to promote research and development. The United States in the implementation of LFA (low frequency active) plan and CST (critical sea test) test program confirmed. Active detection by bistatic reverberation suppression system has many benefits not only anti-submarine aircraft, surface ships, or can be detected using this method can also be used submarines after the cloth in the boat source (Leave8ellh) for bistatic detection, to avoid expose themselves to use more active probing bistatic detection range can be extended to 20 - 30 miles. In addition to the mobile platform, such as the U.S. Navy is developing unmanned platforms with the AUV to carry sensor or multi-source base for exploration. Also envisaged to use unmanned aircraft and air-dropped buoys combined. No to anti-submarine warfare in the direction of development. A variety of mobile platforms can work this way, mobile platforms and fixed probe - the combination of measurement system can also be detected from the multi-base, Figure 3 represents some typical bistatic active configuration Abduction} Shu way - 4 - Livestock: Gang lj pupil taken ill Figure 3 kinds of active acoustic drop-test mode 14: tt '~ odd way home �� D: Lei sweet dish called the King a �� T: hoe voice snapped @ K: tUltltk ~ forward scattering detection by sending and receiving the evolution of the split detection of another - of different detection methods. It is only through the emission source in the target and receiving a connection between the sensors can detect targets. The outstanding advantage is to reduce the transmission power is too large, and to target difficult to reduce its target strength of the methods to avoid. Multistatic detection system itself has a reasonable need for base-cho, layout and dynamic tracking the location of each base. And to overcome the direct wave interference and data transmission and integration issues. �� 3.2 data transfer technology acoustic sensor network data transmission problems than the previous detection system is too difficult. Especially the underwater mobile platform and the surface platform or shore-based communication between platforms is more difficult. Because it can only rely on acoustic communication. High-speed underwater acoustic communication is currently only 9 maintain a short distance. And the previous point to point communication can not meet the requirements of network communications. Solution to these problems depends on the one hand, a breakthrough in underwater acoustic communications technology, on the other hand rely on relay,[link widoczny dla zalogowanych], information compression and other measures to remedy the situation. U.S. development of sonar buoys for communication. With the radio and air platforms (aircraft, satellites,[link widoczny dla zalogowanych], etc) acoustic communication relay and the development of regional networking. U.S. Navy's 21st century information technology (IT-21) program is committed to expanding the bandwidth of communication technology, interoperability (interoperability), security and computer services. IT-21 ASW members will be fast,[link widoczny dla zalogowanych], Ao exchange of information. And in the information (electromagnetic, acoustic, light transmission) of the Anti-listening technology has made significant progress, to ensure low risk. This is the invisibility of the submarine is very important. U.S. Navy's next-generation communications equipment will support the implementation of the periscope depth and the depth of anti-submarine warfare in both the implementation of high-speed information and communication. In which acoustic communication (ACOMMS) acoustic modems will be used to reduce the spread of environmental distortion deconvolution for unmanned underwater vehicle is also intended to its Internet web site to determine, using standard TCP / IP protocol to communicate. Underwater and satellite communications (through the dragging floating platform or sonar buoys) also use UHF channel by two-way high-speed commercial confidentiality manner. 3.3 The distribution of data fusion in sensor networks can be laid to provide information on the underwater acoustic field is very striking. To comprehensive utilization of this information, the United States can not be separated coherent data fusion sensor data fusion (acoustic, non-voice) as a future anti-submarine system to achieve the key technologies. Currently implemented in the sonar data fusion in the main limited to the small target data (weeping and feature set) in the different subsystems or equipment related to multiple target data based on motion analysis and identification. Now has the computing power of multi-dimensional search, which can provide five spatial parameters: spatial orientation, distance and velocity vector integration should be further extended if the original sound field to the sensor data, cut high-speed data processing capability required for the current rapid development of this Computer technology is not insurmountable problems. The benefits are very attractive to achieve lower detection threshold include,[link widoczny dla zalogowanych], reducing clutter and false alarm rate, to reduce operator burden and improve the regional warning, tracking and automation, etc. 4 Conclusion China's long coastline coastal waters is extremely important military and economic value. Thus military and civilian needs of underwater acoustic surveillance system should be great. But basically blank. With the rapid growth of China's economic strength and technological level, the progressive development of application,[link widoczny dla zalogowanych], military or dual-use

相关的主题文章：

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]