Data Hacking
Data Hacking
Data Hacking
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C/A-code (Coarse/Acquisition), 290, 317<br />
car<br />
automotive circuit, connecting GPS receiver to,<br />
16–17, 30<br />
external antenna placement for, 70–71<br />
mounting GPS in, 108–111<br />
reradiating antenna placement for, 75–76<br />
case for GPS, building, 113–122<br />
Character Map application, 139<br />
charger, battery, 44<br />
checksum, in NMEA sentence, 196, 205<br />
Chicago screws, 113<br />
cigarette lighter, connecting GPS receiver to,<br />
16–17, 30<br />
civilian GPS signal. See C/A-code<br />
(Coarse/Acquisition)<br />
clock, atomic<br />
definition of, 317<br />
synchronizing PC time with, 236–246<br />
used by GPS, 311<br />
clock error, 312<br />
Coarse/Acquisition (C/A) code, 290, 317<br />
COG (course over ground), 198, 201, 318<br />
cold start, 317<br />
combo cables<br />
data cable/power cord combination, 17<br />
making, 39<br />
multi-data cable, 18<br />
multi-data/power cables, 18–19<br />
multi-data/power/GPS cables, 19<br />
multi-GPS cable, 18<br />
comma (,), separating NMEA data items, 196<br />
CommLinx Solutions, GPS Diagnostic software,<br />
208–210<br />
communal reradiating antenna, 74<br />
compass calibration, Magellan Meridian series, 9<br />
compensation offset, Magellan Meridian<br />
series, 9<br />
Concealex sheet, 113, 114–115<br />
confluence, points of, 292–294<br />
connector<br />
affecting signal, 78<br />
for combo cables, 17–19<br />
damage to, 155, 157, 274<br />
for data cable, 14–16<br />
Index ■ C–D<br />
for external antenna, 67<br />
making, 22–27, 28–30<br />
for power cord, 31<br />
protecting, 274<br />
serial compared to USB, 150, 155<br />
websites for, 19, 315<br />
constellation, 317, 318<br />
contact information, adding to startup<br />
screen, 281<br />
control segment, 306, 317<br />
coordinates. See also waypoints<br />
definition of, 318<br />
plotting, 167–168<br />
course over ground (COG), 198, 201, 318<br />
course to steer (CTS), 318<br />
Coverage Solutions website, 79<br />
CR123A lithium batteries, 52–57. See also<br />
lithium batteries<br />
crisscross search, 264<br />
crosstrack error (XTE), 198, 318<br />
CTS (course to steer), 318<br />
cutoff angle (mask angle)<br />
definition of, 318<br />
graphing, with VisualGPS, 248<br />
D<br />
data. See also NMEA protocol<br />
adding to digital photos, 191–192<br />
direction, 169–170<br />
downloading to PC<br />
with EasyGPS, 174–180<br />
with G7toWin, 189<br />
reasons for, 173–174, 190–194<br />
editing on GPS, 173<br />
editing on PC<br />
with EasyGPS, 181–188<br />
with G7toWin, 189–190<br />
lightning, detecting and plotting with, 192<br />
position, 166–168<br />
programming with, 193–194<br />
PVT (Position, Velocity, Time), 166–171<br />
routes, 172–173<br />
SiRF protocol for, 206<br />
spikes in GPS data, 220–221<br />
time, 170–171<br />
Continued<br />
323
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