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Data Hacking

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FIGURE 10-40: Mask angle displayed for the<br />

current location<br />

Surveying<br />

Chapter 10 — More <strong>Data</strong> Tricks<br />

The Survey window displays both position and xDOP (x Dilution of Precision). HDOP represents<br />

horizontal dilution of precision, or inaccuracy in the position displayed, while VDOP<br />

represents vertical dilution of precision, or height/altitude inaccuracies (see Figure 10-41).<br />

FIGURE 10-41: The Survey window<br />

If you are using a stationary antenna, this window can provide very accurate measurements of<br />

position and elevation.<br />

You can also print this information.<br />

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