Blueprint Subsea M1200d, Руководство пользователя

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Oculus M-Series Sonar
User Manual
15
3.2. Acoustic Beam Patterns
When considering how sonars operate, it may help to think of the sonar like a torch being used in a darkened
room. Only the parts of the room illuminated by the torch can be seen by the user, and if the torch has a narrow
beam then their field of vision is reduced.
Similarly, the sonar has a fixed width and height to the
area it ‘illuminates’ with sound, and these are called the
Horizontal and Vertical Beam Patterns.
Oculus sonars with a ‘d’ name suffix (such as the M750d and M1200d) are dual -frequency devices that support two
operating modes - Low Frequency and High Frequency .
Single frequency Oculus sonars (with a ‘s’ name suffix such as the M370s) only support the Low Frequency
operating mode. E
ach mode has its own beam pattern illustrated in the figures below:
Horizontal
Width
Vertical
Width
Maximum Range (approximately up to)
M370s M750d M1200s
 Low Frequency
130° 20° 200m 120m 40m
 High Frequency
80° 12° N/A 40m 10m