Prerequisites
Prior to starting LD900 and INS commissioning the system must:
1. Have a high-quality antenna installation.
2. Have an AUTH code for INS (which includes Heading)
3. Be activated and receiving VERIPOS PPPcorrection services.
Appendix-A provides a comprehensive equipment listing including part numbers. Alsorefer to the LD900 and
Quantum documentation section in VOSSifrequired.
INS Authorisation
The LD900 must be correctly authorised before it can be used for INS operations. If required obtain an INS
authorisation code by contacting yourVERIPOSproject manager,or by email
(support.veripos@hexagon.com). The Auth Code will be supplied witha guide explaining how the codes can
be applied to the LD900. Note the INS authorisation code includesthe GNSSheading functionality.
A simple way to check if the LD900 is authorised for INS operations is tocheck if INS is presenton the LD900
status screen, asshown in the above image. If there is no INS status iconvisible, then the LD900 is notyet
authorised forINS use.
GNSS Heading Antenna Installation
Consideration for the placement ofthe primary and secondary antennasis required to ensure reliable and
accurate LD900 GNSS reception and heading calculation. Please also consider the INS installation
requirements detailed in sectionIMU Placement.
AntennaSeparation
The GNSS heading accuracy is largely determined by the distance between the primary and secondary
antennas. The larger the antenna separation, the better the heading accuracy will be.VERIPOSrecommend a
minimum antenna separation of2m.
