Undersea Sensing, Communications, Imaging, Control and Navigation Solutions for Naval Forces
Mini-Ranger 2 USBL Underwater tracking and communications system
Mini-Ranger 2 USBL

Underwater tracking and communications system

Extendable to 4,000 m with a 995 m operating range, Mini-Ranger 2 from our Technology Partner Sonardyne can track up to 10 underwater targets simultaneously, including divers, towed instruments, ROVs and AUVs. Visit Website Contact
Mini-Ranger 2 USBL

Mini-Ranger 2 is Sonardyne’s mid-level Ultra-Short Baseline (USBL) target tracking system that’s also able to support data USV harvesting from seabed-deployed instruments or communicating with underwater assets such as AUVs.

With a 995 m operating range, extendable to 4,000 m, Mini-Ranger 2 can track up to 10 underwater targets simultaneously, including divers, towed instruments, ROVs and AUVs.

Mini-Ranger 2 is a compact, easily installed system ideal for temporary installation on small survey vessels and USVs. It is built around the same market-leading 6G hardware and Wideband 2 digital acoustic technology and software found in the entire Sonardyne family of USBL systems.

The system incorporates HPT 3000, a surface-deployed USBL transceiver optimized for performance in shallow water, high elevation and long lay back operating scenarios, as well as data telemetry. It is typically deployed over the side of a vessel on a pole arrangement or under the hull of a USV. HPT 3000 is connected to the system’s 1U-high Ethernet Serial Hub (ESH) and a PC running the Ranger 2 software application. Fit a transponder to each target you want to track and it is mission-ready.

A wide range of Sonardyne 6G transponders can be used with Mini-Ranger 2, allowing users to select the most appropriate model for each task.

Mini-Ranger 2 is simple to configure and easy to use, even if you have no prior experience of acoustic tracking technology.

Key features:

  • Performance without the cost and complexity of a deep water USBL solution
  • Expected system accuracy is 1.3% of slant range
  • Designed for nearshore naval operations; UXO surveys, search and recovery, structure inspection
  • Portable and quick to mobilize
  • Optional Marine Robotics software feature pack provides command and control of AUVs
  • Works with a wide range of 6G transponders including RT 6 acoustic releases
Feature Specification
Design Easy to transport, hardware comes in one box
Configurable for manned or unmanned vessel operations
Quick to mobilize, configure and uninstall
Shares common platform with other Sonardyne USBLs
Performance 0.2% positioning repeatability using external MRU
1.3% positioning repeatability using internal MRU
Up 10 targets tracked, simultaneously
995 m tracking range; extendable to 4,000 m
3 Hz position update rate
Acoustics MF frequency (19–34 kHz)
Sonardyne Wideband 2 digital acoustics for reliable performance in both shallow and deep environments
Supports Sonardyne Messaging Service for data exchange
Transceiver optimized for high elevation tracking