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306 Appendix A — GPS Primer The Control Segment The control segment, just like the space segment, is U.S. Department of Defense property. Just as we have no direct access to the space segment, the same is true of the control segment. The control segment is made up of a worldwide network of monitoring stations, ground antennas, and a master control station. There are five monitoring stations: Hawaii Kwajalein (on the Marshall Islands in the Pacific Ocean) Ascension Island (South Atlantic Ocean) Diego Garcia (Indian Ocean) Colorado Springs, Colorado There are three ground antennas: Kwajalein (on the Marshall Islands in the Pacific Ocean) Ascension Island (South Atlantic Ocean) Diego Garcia (Indian Ocean) There is also one master control station located at Schriever Air Force Base in Colorado. This vast array of systems is used to passively track all satellites in view and gather ranging data. This information is passed on to the master control station where it is processed in order to determine precise satellite orbits and update each satellite’s navigation message so that they are as accurate as possible. Updated information is transmitted to each satellite via the ground antennas. The User Segment The user segment is the part of the system to which you and I have access. This is where all the GPS receivers come in. There are many types of receivers in the user section: Handheld systems Car navigation systems Professional commercial systems used for navigation and surveying Military receivers The satellites transmit two types of signal that can be received by the user segment: Standard Positioning Service (SPS) Precise Positioning Service (PPS)
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Hacking GPS
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Hacking GPS Published by Wiley Publ
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Credits Acquisitions Editor Katie M
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Acknowledgments Extra special thank
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Contents Acknowledgments . . . . .
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Contents Chapter 5: Protecting Your
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Hardware Hacks part in this part Ch
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4 Part I — Hardware Hacks Garmin
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6 Part I — Hardware Hacks Diagnos
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8 Part I — Hardware Hacks Magella
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10 Part I — Hardware Hacks Magell
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12 Part I — Hardware Hacks Summar
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14 Part I — Hardware Hacks No cab
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16 Part I — Hardware Hacks FIGURE
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18 Part I — Hardware Hacks Combin
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24 Part I — Hardware Hacks 8. Car
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26 Part I — Hardware Hacks 12. A
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30 Part I — Hardware Hacks 6. Add
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34 Part I — Hardware Hacks Cradle
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38 Part I — Hardware Hacks Now ta
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Power Hacks Without power, even the
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FIGURE 3-2: AA lithium batteries Ch
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Chapter 3 — Power Hacks FIGURE 3-
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Chapter 3 — Power Hacks But what
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Chapter 3 — Power Hacks These sma
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Chapter 3 — Power Hacks As you ca
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Chapter 3 — Power Hacks With two
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Chapter 3 — Power Hacks 3. Take a
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Chapter 3 — Power Hacks 7. Finall
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FIGURE 3-21: 12-volt output from a
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Antenna Hacks Making the most out o
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FIGURE 4-2: The Garmin eTrex receiv
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Chapter 4 — Antenna Hacks FIGURE
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Chapter 4 — Antenna Hacks The con
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FIGURE 4-9: MMCX connector on a Hai
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Chapter 4 — Antenna Hacks For tru
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This sequence is summarized in Figu
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FIGURE 4-14: SmartSolar solar charg
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Carrying a GPS Signal via Cable Cha
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Using a Signal Repeater Chapter 4
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Chapter 4 — Antenna Hacks Aluminu
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Chapter 4 — Antenna Hacks 6. Now
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Summary FIGURE 4-20: Holding the wi
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Protecting and Mounting Your GPS AG
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FIGURE 5-2: Commercial screen prote
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Chapter 5 — Protecting and Mounti
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More Screen Armoring Chapter 5 —
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FIGURE 5-18: Pressure-equalizing va
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FIGURE 5-22: Aquapac suited to an i
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Software Hacks part in this part Ch
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126 Part II — Software Hacks Mana
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128 Part II — Software Hacks If t
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130 Part II — Software Hacks You
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132 Part II — Software Hacks FIGU
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134 Part II — Software Hacks Like
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138 Part II — Software Hacks 11.
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140 Part II — Software Hacks This
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144 Part II — Software Hacks It
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Making Connections In this chapter,
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Chapter 7 — Making Connections Th
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FIGURE 7-4: A PC serial port FIGURE
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FIGURE 7-6: Haicom Bluetooth GPS se
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Which Connection Is Best? So which
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FIGURE 7-10: Port speed settings on
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Chapter 7 — Making Connections 4.
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Chapter 7 — Making Connections If
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Data Hacking part in this part Chap
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166 Part III — Data Hacking Put s
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168 Part III — Data Hacking This
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170 Part III — Data Hacking y N x
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172 Part III — Data Hacking Manua
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174 Part III — Data Hacking The g
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176 Part III — Data Hacking 3. Se
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178 Part III — Data Hacking 3. No
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180 Part III — Data Hacking FIGUR
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182 Part III — Data Hacking 1. To
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184 Part III — Data Hacking When
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186 Part III — Data Hacking The d
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188 Part III — Data Hacking For a
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190 Part III — Data Hacking The o
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192 Part III — Data Hacking RoboG
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194 Part III — Data Hacking In ad
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196 Part III — Data Hacking NMEA
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198 Part III — Data Hacking Strin
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200 Part III — Data Hacking hhmms
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202 Part III — Data Hacking GSA (
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204 Part III — Data Hacking A Tot
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206 Part III — Data Hacking SiRF
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208 Part III — Data Hacking The a
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212 Part III — Data Hacking RECSI
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214 Part III — Data Hacking Figur
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216 Part III — Data Hacking In th
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218 Part III — Data Hacking 7. To
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220 Part III — Data Hacking The f
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222 Part III — Data Hacking usual
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228 Part III — Data Hacking The
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230 Part III — Data Hacking H/PC
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232 Part III — Data Hacking 2. Cr
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234 Part III — Data Hacking 7. Se
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236 Part III — Data Hacking Turni
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238 Part III — Data Hacking Doing
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246 Part III — Data Hacking Anten
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248 Part III — Data Hacking Azimu
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250 Part III — Data Hacking Navig
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252 Part III — Data Hacking Summa
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Hacking Geocaching If a gadget or d
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FIGURE 11-2: 20-yard uncertainty Th
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Chapter 11 — Hacking Geocaching 2
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FIGURE 11-4: A far bigger search ar
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Chapter 11 — Hacking Geocaching R
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FIGURE 11-6: Crisscross or grid sea
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Chapter 11 — Hacking Geocaching G
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GPXSpinner is available from www.gp
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Chapter 11 — Hacking Geocaching O
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FIGURE 11-16: Cables needed for a g
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FIGURE 11-19: Keep cables under con
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Chapter 11 — Hacking Geocaching F
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FIGURE 11-25: Lowe external antenna
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Page 610: GPS Games If anything drives the sa
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Page 638: GPS Primer This appendix is a quick
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Page 648: 308 Appendix A — GPS Primer A B F
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Page 656: 312 Appendix A — GPS Primer Error
Page 660: 314 Appendix B — Websites/Interne
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Page 668: 318 Glossary Coordinates A unique n
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Page 686: GPS III, Garmin. See also Garmin pr
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personal reradiating antenna, 73-74
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soft reset actions required after,
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