High resolution diver-held imaging sonar
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Echologger APIs
This unique handheld imaging sonar Echologger DS900 stands out as one of the most powerful and practical systems designed for divers who prioritize sophistication. Taking the form of a handheld underwater imaging system, it delivers high-resolution visuals tailored for various applications.
Divers can effectively leverage this dynamic product to enhance visibility in dark and turbid environments, addressing tasks like search and rescue (SAR), structure monitoring, or obstacle avoidance.
Notably, esteemed entities such as the US Navy have commended the sublime nature of this fascinating device, recognizing its value and superiority over many conventional products in the market. Beyond the current positive reviews, it proves to be one of the smartest investments for organizations with special divers.
With features including Camera, Light, Compass, and Depth & Temperature sensors, this sonar system ensures clarity in various underwater conditions. Boasting a high scanning speed, it enables swift and efficient data collection for tasks like search and rescue, structure monitoring, or obstacle avoidance. Maintaining zero buoyancy, the device facilitates stable and controlled underwater maneuvering. This comprehensive set of features positions the sonar system as a powerful and practical tool for divers, receiving commendation from the US Navy for its sublime nature and value.
Features
- Handheld imaging sonar for special divers
- High resolution underwater images
- High scanning speed
- Zero buoyancy
- Camera/Light/Compass/Depth&Temp sensors
| Pulse | CHIRP & CW |
| Operating frequency | 900 kHz |
| Beam angle | H2°, V25.0° (DS900) / H0.9°, V25.0° (DS900H) |
| Max Range | 60m |
| Range resolution | 15 mm |
| Scanning mechanism | Contactless transformer type |
| Scanning resolution (adjustable) | 0.1125°, 0.45°, 1.8° |
| Pulse length | 512 us (CHIRP), 10 - 100us (CW) |
| Scanning angle (adjustable) | 30, 45, 60° |
| Underwater monitor | Color LCD 7inch, 1280 x 800 pixels |
| Battery Life | 3.0 @ sonar mode |
| Memory | SSD 15GB (50hours’ sonar data) |
| Depth rate | 100 m |
| Control unit housing material | Al (Hard anodized) |
| Weight | 4.3 kg(air), -36g(water) DS900 / 6.6 kg(air), -54g(water) DS900H |
| Dimensions | 230 x 290 x 160 (mm) DS900 / 240 x 380 x 180 (mm) DS900 |
| Pressure sensor | 0~30bar (300m) |
| Pressure sensor resolution | 0.2mbar |
| Underwater Camera | HD 1280 x 720 (max 30 fps) |
| Camera view angle | 73° |
| Light Brightness | 300 lm |
| Compass range | 360° |
| Compass resolution | Heading: 0.5°, Tilt:1°(<30°), 1.5°(<60°) |
| Case | Pelican (IP65) |
What is the DS900 designed for?
The DS900 is a handheld diver-held imaging sonar designed to provide real-time acoustic visibility for divers operating in low-visibility or zero-visibility environments.
Typical applications include:
- search and recovery
- diver navigation
- obstacle avoidance
- underwater structure inspection
- tactical / special diver operations
How does the DS900 improve diver visibility underwater?
The DS900 uses high-frequency acoustic imaging to generate real-time sonar images of the underwater environment.
Unlike optical cameras, sonar imaging remains effective in:
- turbid water
- darkness
- suspended sediment
- zero-visibility conditions
While acoustic performance can still be affected by environmental conditions, sonar allows effective imaging where optical visibility is poor or absent.
What is the difference between DS900 and DS900H?
The DS900H is the higher-resolution variant of the DS900.
Compared with the standard DS900, it offers:
- sharper horizontal beam
- higher angular resolution
- more detailed sonar imagery
Beam specifications:
- DS900: 2.0° horizontal beam
- DS900H: 0.9° horizontal beam
This makes the DS900H better suited for users prioritising maximum image detail.
What sensors are integrated into the DS900?
The DS900 includes multiple integrated auxiliary sensors:
- HD Camera
- Underwater Light
- Compass
- Depth Sensor
- Temperature Sensor
This allows the DS900 to function as a multi-purpose diver support tool.
Does the DS900 include video recording or data logging?
Yes. The DS900 includes internal data recording capability for sonar data and integrated sensor outputs.
Typical onboard storage:
- 15 GB SSD
- Approximately 50 hours of sonar recording
What scanning performance does the DS900 provide?
Typical specifications include:
- Operating Frequency: 900 kHz
- Maximum Range: 60 m
- Range Resolution: 15 mm
- Adjustable Scan Sector: 30°, 45°, 60°
This provides high-detail close-to-medium range diver imaging.
How long does the battery last?
Typical battery endurance is:
- Approximately 3 hours in sonar operating mode
Battery life may vary depending on sonar, camera, and lighting usage.
Is the DS900 neutrally buoyant?
Yes. The DS900 is designed for near-zero buoyancy underwater, improving diver comfort and handling during operation.
This reduces operator fatigue and improves control during extended missions.
When should I choose DS900H over DS900?
Choose DS900H when:
- maximum image sharpness is required
- detailed target discrimination is important
- inspection / identification tasks are prioritised over wider beam coverage
Choose DS900 when:
- a wider beam / broader field of view is preferred
- general navigation and search tasks are the priority
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