| 词汇 | sonar |
| 释义 | sonar noun[ U ] uk /ˈsəʊ.nɑːr/ us /ˈsoʊ.nɑːr/ equipment, especially on a ship, that uses sound waves to discover how deep the water is or the position of an object in the water, such as a group of fish声纳，声呐（一种声波探测仪器，用声波测定水的深度或水下物体的方位） Compare echo sounder radar Navigation & shipwrecks astrolabe celestial navigation chart circumnavigate circumnavigation dead reckoning lane lightship lodestar narrows nautical mile navigability passage pilot sea lane sextant submersible the Pole Star unpassable yaw Often they use sonar to look for sunken ships on the sea floor. sonar | American Dictionarysonar noun[ U ] us/ˈsoʊ·nɑr/ a device on a ship that uses sound to show the position of objects under the water Examples of sonarsonar In particular, the book is aimed at signal processing practitioners, especially research workers and students working in areas of radar, sonar, telecommunications and biomedical engineering. Each sonar transmits a number of pulses fired in sequence, the exact number of which is determined by a unique code. The mobile robots may navigate by means of a number of monitoring systems such as the sonar-sensing system or the visual-sensing system. This procedure makes use of past sonar readings stored in the occupancy grid map. Side-scan sonar and seismic methods have been used widely to map these topographic structures. Observations are made using an imaging sonar that scans the horizontal plane around the vehicle. They include, for example, mappings of two- or three-dimensional images such as portraits or underwater sonar scans into other images for comparison. Many commercially available mobile platforms already have integrated sonar sensors for the detection of obstacles around the platform. Only integrated sonar sensor were used for obstacle detection. These were very expensive items: radar, sonar, radio transmitters and receivers-large, expensive equipment, sometimes worth half a million 1955 dollars for each item. The program computes the time of flight and the sonar that has received the echo. Individual sonar returns are marked by a dot. The sonar principal returns have been plotted relative to the estimated position of the vehicle. The interface has different robotic components, such as drive functions, sonar, laser, odometer, and camera. This width also depends on the range that the robots can see each other, which depends on the choice of the sonar selected for them. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Collocations withsonarsonarThese are words often used in combination with sonar. Click on a collocation to see more examples of it. active sonar Will it be a fighting ship, or will it be a pseudo-ocean-going tug with a sophisticated towed array and with no active sonar? From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 passive sonar Other support systems included active and passive sonar, altimeter, depthometer, and compass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. sonar contact After the submarine submerged, sonar contact was established. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. See all collocations with sonar |
| 随便看 |
反思网英语在线翻译词典收录了377474条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。