NavCom StarUtil-3000 Rev.G - Manual (Page 75)

StarUtil 3000 User Guide – Rev G
4-73
Chapter 4 ....................................................................... Geoidal Databases
This chapter provides instructions on how to
 Determine whether or not a geoidal database, GGM02, or a user-defined Geoid Height Map
is loaded in the receiver

Upload the GGM02 database or a user-defined Geoid Height Map (identified as GEOID99 in
StarUtil 3000)
 Check or Set Datum

In addition, this chapter provides the GEOIDAL99 format and file requirements.
User-defined Geoid Height Maps are based on the GEOIDAL99 format.

Refer to the Sapphire Technical Reference Manual for detailed information on the
commands used in this chapter: [GEOIDALMODEL], [GGM02STATUS], and
[DATUM] (see Related Documents in the fore-matter). Also see the Datum section
in this chapter.
Determine If a Geoid Model Is Loaded
No Geoid Model Is Loaded
GGM02 Is Loaded
GEOID99 Is Loaded
Figure 75: PVT – GEOID
Refer to Figure 75 for the steps below:

The GEOID status displayed in the PVT window has 3 possible values:
No Geoid Model, GGM02, or GEOID99 (user-defined geoidal database). Refer to the
section below,
Geoid Height Map , for information on the GEOIDAL99 format.
View the PVT window on either the Dashboard or the PVT tab to determine if the GGM02 or a
GEOID99 database is loaded in the receiver. Click
(refresh) to ensure that the most current
data is displayed in the window.
 If No Geoid Model is displayed, go to these sections to upload a geoidal database if desired:

Upload the GGM02 Database

Upload a User-Defined Geoid Height Map

If No Geoid Model is displayed, the Height and Altitude in the PVT window are the
same. If the GGM02 or GEOID99 database is loaded, the Height and Altitude
typically differ.