StarFire Signal Monitoring System

The GS2 alerts the operator when the current StarFire signal is not optimal for high accuracy operations. There are three levels of this warning system (Normal, Marginal, and Poor). The levels are determined both by the StarFire Receiver's PDOP value and the number of satellites being tracked. It is recommend that if the StarFire receiver is being used in high accuracy operations that care be taken when the StarFire Signal Monitoring system indicates that the current status is Marginal or Poor, as accuracy degradation may occur.

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NOTE: Operating in RTK or RTK-X, both PDOP and "Number of Satellites" are used to determine the level of warning.

Operating at a signal level less than RTK (SF2, SF1, WAAS, ect.) only PDOP will be used to determine the level of warning.

Normal

• Green Bar
• Normal Operating Range
• Acceptable range for high accuracy operations
• PDOP value: 0 - 3.5
• 6 or more satellites in solution

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Marginal

• Orange Bar with Permanent Caution Sign
• Marginal Operating Range
• Moderate risk of accuracy degradation - caution is advised
• PDOP value: 3.5 - 4.5
• 5 satellites in solution

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Poor

• Red Bar and Flashing Caution Sign
• Poor Operating Range
• Significant risk of accuracy degradation - high accuracy operations are not advised
• PDOP value greater than 4.6
• 4 satellites or less in solution

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