龍亭企業有限公司 -- 海洋測量硬體
top

　

Our new EM 302 multibeam echo sounder is designed to map almost all of the ocean floors excepting the deep trenches with an unsurpassed resolution and accuracy.

The system is cost effective, reliable, and easy to operate. It is the better system in comparison to full ocean depth multibeam echo sounders such as the EM 122 when most mapping is done at depths less than 2-3000 m, and on smaller vessels where it would be impracticable to install the transducers of a full ocean depth system.

It replaces the highly regarded EM 300 introduced in 1996, of which more than 20 systems are operational. It has the same transducer dimensions as in the EM 300, but with new electronics and software.
EM 302 performance data

Operating frequency.................................................................................................30 kHz
Depth range........................................................................................................10-7000 m
Swath width...............................................................................5.5xDepth, to approx 8 km
Pulse forms.............................................................................................CW and FM chirp
Swath profiles per ping...............................................................................................1 or 2

Motion compensation:
- Yaw...............................................................................................................± 10 degrees
- Pitch.............................................................................................................± 10 degrees
- Roll...............................................................................................................± 15 degrees

Sounding pattern..........................................................................Equi-distant /equiangular
Depth resolution of soundings.....................................................................................1 cm
High resolution mode...................................................................High Density processing
Sidelobe suppression.............................................................................................> 25 dB
Suppression of sounding artifacts.............................9 frequency coded transmit sectors
Beam focusing................................On transmit (per sector) and on reception (dynamic)
Beamforming method........................................................................................Time delay
Gain control.........................................................................................................Automatic
Swath width control..................Manual or automatic, all soundings intact when reduced swath width

Seabed imagery/sidescan sonar image...............................................................Standard
Water column display...........................................................................................Standard
Mammal protection...............................................................................................Standard
Multi frequency operation........................Yes, by integration with EM 3002 and/or EM 710
Sub bottom profiling....................................................... Yes, by integration with SBP 300
　
　
Untitled-1