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Gemini 1200ik Multibeam Imaging Sonar

The TriTech Gemini 1200ik multibeam imaging sonar conveniently mounts to our ROVs for effective target identification in turbid waters. The 720 kHz low frequency setting is designed for target identification and obstacle avoidance at long range, whilst the 1200 kHz high frequency setting offers extremely detailed multibeam images, ideal for inspection at close range. Unique to the Gemini1200ik is the ability to maintain a 120° field of view across both frequencies.

Gemini 1200ik Multibeam Imaging Sonar

The TriTech Gemini 1200ik multibeam imaging sonar conveniently mounts to our ROVs for effective target identification in turbid waters. The 720 kHz low frequency setting is designed for target identification and obstacle avoidance at long range, whilst the 1200 kHz high frequency setting offers extremely detailed multibeam images, ideal for inspection at close range. Unique to the Gemini1200ik is the ability to maintain a 120° field of view across both frequencies.

  • Controler icon

    Integrated into controller

  • Dual frequency mode

  • Pivoting tether connection-icon

    0.1m to 120m range

Gemini 1200ik multibeam dual frequency multibeam Imaging Sonar for murky water survey and inspection

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The Tritech Gemini 1200ik multibeam sonar operates at two acoustic frequencies, 720kHz for long range target detection, and 1200KHz for enhanced high resolution imaging at shorter range object identification.

The 1200ik ability to maintain a 120° field of view when operating at high frequency is completely unique. Allowing the target to remain within view at all times, even when the object is in the nearfield.

Low-visibility operations

Cameras and diver’s eyes often are unable to effectively search due to poor visibility underwater. An imaging sonar is the best tool to then reidentify the target, since oftentimes side scan data does not produce an exact location (so navigating back to the potential target can be difficult). Once the target is reidentified, the sonar can be used to continue to track the target as you move closer, and when you get close enough, it can even be used to perform the visual verification.

Sonar for search and recovery

In Search and Recovery operations, First responders looking for evidence or drowning victims typically sweep an area using side scan sonar, identify potential targets and then investigate those targets to see if it is in fact the victim.

Sonar for hull inspection

In inspection operations, particularly in murky water applications, it can be difficult to use just a camera to get an understanding of the condition of a structure.

For example, when inspecting the hull of a ship, you want to see if there are any major defects or corrosion, damage to the coating, zincs, anodes, propeller, check the coating condition, check if the hull needs to be cleaned.

Gemini 1200ik Sonar Spec

Width125mm (4.9 inch)
Height65mm (2.6 inch)
Length150mm (5.9 inch)
Depth rating350m
Weight in air1.45kg (3lbs)
Weight in water0.5kg (1.1lbs)
Temperature rating-10°C to 35°C (operating), -20°C to 50°C (storage)

Gemini 1200ik Multibeam Acoustic Specs

Operating frequency720kHz to 1200kHz
Angular resolution1.0° acoustic, 0.25° effective (LF) to 0.6° acoustic, 0.12° effective (HF)
Range0.1m - 120m (LF) to 0.1m - 50m (HF)
Number of beams512 (LF) to 1024 (HF)
Horizontal beamwidth120°
Vertical beamwidth20° (LF) to 12° (HF)
Update rate5 - 65Hz (range dependent)
Range resolution4mm (LF) to 2.4mm (HF)
CHIRP supportYes
Speed of SoundIntegrated Velocity of Sound sensor for accuracy
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