Measures Land Slips and Structural Oscillation with Millimeter Precision

EagleEye is a static position measurement device which utilizes GNSS L1 waves. It can carry out high precision measurement with millimeter accuracy, required in such fields as land slip detection and structure oscillation.

System Outline


Applicable Fields

EagleEye employs an analysis technique using static interferometric positioning method (static position measurement) based on single frequency GPS. It captures the position data of the GPS measuring point every hour in units of millimeters, and monitors displacement in position data 24 hours a day, 365 days a year.

EagleEye 変位計測システム アンテナ外観 EagleEye 変位計測システム ソーラー電源オプション EagleEye 変位計測システム コントローラー外観

In addition to long term displacement monitoring of slopes and inclines, it can also be used to measure displacement of large structures such as tunnels, buildings, motorways, railways, and bridges.

Measurement specifications

Measurement method Static interferometric positioning method using L1 waves (1575.42 MHz) (Static position measurement)
Data epoch time Every 15 seconds
Analysis sessions 1 Every hour/ every 15 minutes (option)
Analysis precision (estimated) ± 2mm rms
Displacement observation device (Base station) For each unit, a maximum of 9 displacement observation devices (mobile stations)

Displacement measurement device Instrument specifications

External dimensions width=190 × 75 × 75mm (not including the attached pole)
Mass (estimated) 1 kg (not including attached pole and cable)

GNSS specifications

GNSS L1 C/A code
Backup battery Fitted with battery for backing up almanac data
Raw data output Proprietary binary format

Communications specifications

Frequency band 2.4 Ghz
Communication range Maximum of 500m (Between main unit and sub-devices *The range will vary depending on conditions)

* Specifications and appearance are subject to change without notice.

Case Study ⇒ Monitoring Hakone Volcanic Activity Using “EagleEye”