Product Introduction

USBL Underwater Positioning – Real-Time Coordinate Tracking

The ROV Locator Mk II is a portable positioning system specifically developed for small ROVs. The system consists of one Subsea Transmitter (mounted on the ROV) and one Surface Receiver. With a streamlined deployment process, operators can monitor the ROV’s dynamic coordinates in real-time via the ground station’s map interface.

● Core Advantages：
Seamless Integration: Simply power up to begin diving operations; tracklogs are synchronized in real-time on the ground station map.
Intelligent Autosync: The system utilizes advanced GPS/GNSS signals for clock alignment, ensuring perfect synchronization for data transmission.
Rapid Signal Acquisition: Satellite signal acquisition takes only approximately 30 seconds, significantly reducing pre-operation standby time.
Hassle-Free Deployment: Signal capture and time synchronization run entirely in the background. These processes occur simultaneously with ROV deployment prep and IMU calibration, saving valuable mission time.

USBL Underwater Positioning – Real-Time Coordinate Tracking

● Operating Principle：
The Mk II system establishes a precise time reference by allowing both the Receiver and Transmitter to acquire satellite signals before and during the mission. This ensures that when acoustic signals travel between the surface and subsea units, the system can calculate true slant range and bearing through precise time-of-flight (ToF) measurement.

● Packing List：
Subsea Transmitter Unit * 1
Surface Receiver Module * 1
Specialized Mounting Ring * 1
Bracket Adapter * 1

Product Comparison Table

	ROV Locator Ⅱ	ROV Locator Ⅲ
Sync Technology	GNSS Satellite Sync	Acoustic Duplex Sync
Positioning Principle	Calculates time difference based on pre-aligned clocks at both ends.	Calculates two-way Time of Flight (ToF) of acoustic signals.
Pre-Dive Prep	GPS signal acquisition required at the surface before diving.	No sync required; true plug-and-play upon power-up.
Accuracy Stability	Subject to clock drift (approx 1 m/h).	Zero drift; accuracy remains constant over time.
Mission Duration	Requires periodic recovery to the surface for re-sync.	Supports unlimited underwater operation time.
System Integration	High; requires clear line-of-sight for GNSS antennas.	Ultra-high; simpler installation with a more compact form factor.
Multi-Device Compatibility	Minimal restrictions.	Limited to one system per area.
Ideal Scenarios	Short-duration, budget-friendly routine missions.	Long-endurance deep-sea missions and professional scientific research.