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Data Hacking

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212 Part III — <strong>Data</strong> <strong>Hacking</strong><br />

RECSIM III is an NMEA generator that can create all sorts of GPS data for you. If you have<br />

a license, if can even send data via the serial port. Even the evaluation copy allows you to customize<br />

the type of output that the software generates (see Figure 9-9).<br />

FIGURE 9-9: Customizing NMEA output<br />

In addition to that, RECSIM III enables you to generate NMEA data based on simulated<br />

course and speed data (see Figure 9-10).<br />

FIGURE 9-10: NMEA data simulating course and speed<br />

Finally, to make the simulation even more realistic, you can also get RECSIM III to add an<br />

error into the NMEA sentences that it outputs, so that the course information it generates is<br />

closer to its real-world counterpart (see Figure 9-11).

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