The problem:

Seismic crews around the world are turning away from traditional acquisition techniques and starting to use high productivity Vibroseis methods

The goal is to be more efficient, more VPs per day. To achieve this, more vibrators are being used

More vibrators and high productive techniques require collision management

Some of the techniques, such as DS4 (time/distance rule) require decision making, which generates extra messages. This inherently causes a slow down

The Solution:

Create a communication system that is capable of delivering messages across many nodes without collision loss over large distances

Provide a way to allow the individual vibrators to make decisions on the time/distance rules without involving a centralized decision maker

The Hardware:

SSC Radio Control System

Raveon M8/M21 Digital Radio

50W Amplifier

How does VibLink work?

The VibLink module - Each VibLink unit contains a Linux-based co-processor board, a digital radio, and a 50 watt amplifier. The coprocessor implements the TDMA process, the radio handles the communications, and the ampli-fier ensure the signals are sent out at maximum strength.

The VibLink system - Each vibrator, plus the central recorder, is equipped with a VibLink module. The VibLink module uses advanced TDMA techniques to multiplex seven vibrators and the doghouse on one radio channel. And does this all in one second windows. With additional Vibrators, additional seconds are added. The Universal Encoder 3 uses its time slot to send out status updates and request PSS/PFS data. Each Force 3 controller uses its time slot to send out its location, status, and QC Information.

NavLink QC Screen

NavLink Operator Screen