Data Hacking

216 Part III — Data Hacking
In this screen, you can specify the input that the application should receive and process. Inputs
include the following:
COM port (a GPS attached to the PC)
Gate Direct (data passed through the application directly)
NMEA Log (this processes data from a log)
Simulator (GpsGate can act as a virtual GPS)
Virtual Port (processes data received from a virtual port)
TCP/IP (data received over a network)
UDP (data received over a network)
You can also set up virtual ports to which the data can be sent. Any virtual ports created appear
in the list of ports available for most applications, and enable you to take one GPS input and
send it to a number of ports. Generally, the GPS can only be accessed by one application,
because applications lock a port when using it. GpsGate enables you to take one signal and
send it to multiple applications on both a Windows PC and a Pocket PC device, as shown in
Figure 9-16.
FIGURE 9-16: GpsGate can send a GPS
signal to multiple virtual ports.
Recording Actual NMEA Sentences with GpsGate
If you have a GPS connected to your PC, you can use GpsGate to record the NMEA sentences
from the GPS to a file on the PC. There is an advantage to storing the GPS data in an
NMEA file, rather than in a proprietary format: An NMEA file can be imported into a variety