GNSS processing. Kongsberg DPS 232

Figure 22 GNSS sensor geometry configuration view

Configuration

5.5.2

GNSS processing

For operations with weak satellite geometry, the use of height aiding and/or a lower elevation mask, may improve the position availability.

Available height aiding mode values are Filter and Off . The height aiding mode is normally set to Filter. In height aiding mode Filter, the processing software will use the averaged antenna height measurement as a contribution to the position solution. For operations with varying height, height aiding mode should be set to Off.

The elevation mask has a default value of 10 degrees, which is the recommended setting for most scenarios. Under special conditions the Elevation mask might be changed in order to improve the satellite geometry or reduce multipath. The recommended value range is from 7 to 15 degrees.

The position integrity status indication (Safe, Caution, Unsafe) is based on the position

Accuracy level . The vessel's operational mode may require the accuracy level to be modified. The default value is 10 m. If the EPE value is larger than the accuracy level, the system integrity status is indicated as Unsafe.

The Ionosphere activity value is used to indicate the level of ionospheric activity.

Available values are Normal , Medium and High . The default value is Normal .

Note

During periods with increased ionospheric activity, this value should be set to High for optimized system performance. Distant single frequency reference stations will then have less influence on the position calculations.

G210-14/3.0

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