Seatex DPS 200 - Height Aiding; Satellite and Fix Computation Related Settings

Seatex DPS 200 Installation Manual, rev. 4 Installation
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can be offset up to ±3 degrees. The zone offset is typically applied where the maps used
have an offset.
UTM_MODE_1 0
UTM_ZONE_1 -1
UTM_ZONE_OFFSET_1 0.0 [deg]
Different UTM modes and zones may be set on each DP port.
UTM mode is default set to 0, UTM zone is default set to –1 and UTM zone offset is default
set to 0.0.
3.9.7 Satellite and fix computation related settings
It is possible to set up satellite and fix computation related settings such as elevation mask,
HDOP and PDOP limit in the setup file.
ELEVATION MASK 10 [deg]
HDOP LIMIT 4
PDOP LIMIT 100
The limit for minimum satellite elevation allowed in the fix computation is default set to 10
degrees.
If the HDOP or PDOP value exceeds the set limit, no position or velocity fix is computed.
The HDOP limit is default set to 4, while the PDOP limit is default set to 100.
3.9.8 Height aiding
It is possible to select which height aiding mode the system should use. The parameter
HEIGHT AID selects the aiding mode. Four modes can be selected:
0: No height aiding.
1: Use value of AIDED HEIGHT as a constant height.
2: Use automatic filtered height aiding where initial height is selected from a
pre-configured geoid model (STANAG 4294).
3: Use automatic filtered height aiding with AIDED HEIGHT as initial value.
Note If the pre-configured geoid model file is not found, mode 3 is used.
It is recommended to use mode 2.
The AIDED HEIGHT parameter is an initial value for filtering height. The value is the
antenna height above the WGS 84 ellipsoid. When using HEIGHT AID mode 1, 2 or 3, it is
very important that the antenna height input is correct. If the value is wrong, the position will
be unstable.
FSP ref.: A11213500XRBRA0