Knowledge Base

This guide may be used to check a test RAW file recorded in HYPACK to make sure the driver setup is correct. The time stamps of the recorded RAW data lines are inspected to check that the time stamps are written correctly and no time offsets are present. Time offsets might be very small – from a few milliseconds – to very large – several hours.

HYPACK offers two methods to acquire data when using CEE echo sounders with the proprietary time-stamped output format. When using the echo sounder and GNSS alone, as in most SBES surveys, the special CEE time stamps may be used for maximum timing precision. If using ancillary devices without time stamped data such as side scan, an alternative driver setup is required.

Single antenna PPP operation is useful for some survey situations, when other precision corrections are unavailable. The CEESCOPE™ echo sounder can receive various PPP services; Hemisphere Atlas, NovAtel / Hexagon TerraStar­ or Trimble RTX. This document explains how the services work and an overview of how the CEESCOPE™ is operated when setting up for PPP.