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Data Hacking

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332 Index ■ R–S<br />

resources. See websites<br />

.RGN files, 136, 140<br />

Rino GPS receiver (Garmin), 297<br />

RMA sentence (navigation data from present<br />

position), NMEA, 201<br />

RMB sentence (recommended minimum<br />

navigation information), NMEA, 199<br />

RMC sentence (recommended minimum<br />

specific GPS/TRANSIT data),<br />

NMEA, 197, 199–200, 239<br />

RoboGEO software, 191–192, 294<br />

RoboGEO website, 314<br />

ROT 13 encryption system, 259<br />

ROT sentence (rate of turn), NMEA, 197<br />

routes<br />

definition of, 172–173<br />

dummy routes, creating, 190<br />

route-planning for geocaching, 269–272<br />

RPM sentence (revolutions), NMEA, 197<br />

RTE sentence (routes), NMEA, 197<br />

rubber bumpers for screen, 93–94<br />

Russian counterpart to GPS (GLONASS), 318<br />

S<br />

SA (selective availability)<br />

definition of, 255–256, 319<br />

history of, 289–291<br />

satellite constellation, 317, 318<br />

satellite control system, 306, 317<br />

satellites<br />

altitude, how satellites determine, 311<br />

altitude of, 41, 61<br />

availability of, software for, 248<br />

azimuth and elevation graphs for, 248–249<br />

definition of, 303–306, 319<br />

GPS not detecting properly, 219–220<br />

GPS not finding, 161<br />

healthy, 203–204, 303, 318<br />

listing, Magellan Meridian series, 9<br />

orbital period of, 304<br />

satellites in view, 197, 202<br />

signals transmitted by, types of, 306–307<br />

Scientific Components, GPS Toolkit.NET,<br />

193–194<br />

S-code. See C/A-code (Coarse/Acquisition)<br />

screen<br />

Aquapac carrier for, 100–104<br />

cleaning, 88<br />

Otter case for, 105–108, 285<br />

protectors for, 88–92, 285<br />

rubber bumpers for, 93–94, 285<br />

Storm Case for, 99–100<br />

Voyageur bag for, 103<br />

wire bumpers for, 94–99<br />

screenshots, capturing<br />

with G7toCE, 229–235<br />

with G7toWin, 223–229<br />

SeaClear website, 314<br />

search patterns in geocaching, 264–265<br />

secondary confluences, 293<br />

segments<br />

control segment (satellite control system), 317<br />

space segment (satellites), 319<br />

user segment (receivers), 319<br />

selective availability (SA)<br />

definition of, 255–256, 319<br />

history of, 289–291<br />

self test, Magellan SporTrak, 10<br />

sensor calibration, Magellan Meridian series, 9<br />

sensor degauss, Magellan Meridian series, 9<br />

serial port connection, 150<br />

serial port test<br />

Magellan Meridian series, 8<br />

Magellan SporTrak, 10<br />

shut down, forcing, Magellan Meridian series, 8<br />

signal. See also antenna<br />

body affecting, 64<br />

cable length affecting, 69, 77–78<br />

connectors affecting, 78<br />

GPS requirements for, 77<br />

quality of, determining with VisualGPS,<br />

250–251<br />

splitter’s effect on, 78<br />

types of, transmitted by satellite, 306–307<br />

water affecting, 64, 312<br />

signal errors, 311–312<br />

signal repeater, 79<br />

signal-to-noise ratio (SNR), 250–251<br />

SiRF protocol, 206<br />

ski-pole, mounting GPS to, 111–113

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