Trietech Gemini 720ik

The Gemini 720ik is a real-time, high-frequency multibeam imaging sonar. Utilising Tritech’s advanced processing electronics, at 1m range the sonar offers a world-class 97Hz update rate to produce high-quality, video-like imagery.


This compact multibeam imaging sonar has been specifically developed for shallow water operations; with low power consumption and Compressed High-Intensity Radar Pulse (CHIRP) processing for greater definition at long range. Its reduced size and weight, and proven reliable performance makes it the ideal sonar for use on ROVs for navigation, obstacle avoidance and target recognition as well as diver operations. Used in conjunction with the Helmet Mounted Display it also provides divers with real-time imaging in low-visibility conditions via a high-resolution diver display.

The Gemini 720ik sonar is supplied with Tritech’s data acquisition and logging software – Seanet Pro – which offers users the capability to operate multiple Tritech sensors using a single software program.

Technical information

Acoustic specifications
Operating frequency: 720kHz
Angular resolution: 1.0° acoustic, 0.25° effective
Range: 0.2m – 120m
Number of beams: 512
Horizontal beamwidth: 120°
Vertical beamwidth: 20° (±10° about horizontal axis)
Update rate: 5 – 97Hz (range dependent)
Range resolution: 8mm
CHIRP support: Yes
Speed of Sound: VoS sensor

Supply voltage: 19V to 74V DC
Power requirement: 16W – 27W (range dependent)1
Main port protocol: Ethernet
Auxiliary port (optional): RS232, TTL in, pass-through power
Connector type: MAIN port: Impulse MKS(W)-307-FCR
AUX port: Impulse MKS(W)-307-FCR

Physical specification
Depth rating: 350m
Weight in air: 1.40kg
Weight in water: 0.43kg
Temperature rating: -10°C to 35°C (operating), -20°C to 50°C (storage)


Gemini-720ik-datasheet (1)