Dgps – Wavecom W61PC V7.5.0 User Manual

Page 150

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Transmission Modes

WAVECOM Decoder W61PC/LAN Manual V7.5

Normal

Inverse

Normal

Inverse

Normal

Inverse

Normal

Inverse

032

051

172

036

346

612

546

132

036

172

174

074

351

243

565

703

043

445

205

263

356

212

606

631

047

023

212

356

364

131

612

346

051

032

223

134

365

125

624

632

053

452

225

122

371

734

627

031

054

413

226

411

411

226

631

606

065

271

243

351

412

143

632

624

071

306

244

025

413

054

654

743

072

245

245

072

423

315

662

466

073

506

246

523

431

723

664

311

074

174

251

165

432

516

703

565

114

712

252

462

445

043

712

114

115

152

255

446

446

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723

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116

754

261

732

452

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731

155

122

225

263

205

454

266

732

261

125

365

265

156

455

332

734

371

131

364

266

454

462

252

743

654

132

546

271

065

464

026

754

116

134

223

274

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465

331

143

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466

662

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311

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503

162

152

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315

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506

073

DGPS

DGPS (Differential Global Positioning System) data is mainly transmitted in the low frequency band e.g.
285 - 315 kHz. It is a correction signal for GPS receivers, and is used to increase the accuracy of the sat-
ellite-based GPS signal. DGPS is based on the transmission of correction data by a reference station, the
position of which has been determined with high accuracy by traditional position-finding measurements.
With the correction data, an absolute accuracy to within 4 meters can be achieved.

Parameter

Value

Frequency range

HF

Operation modes

Broadcast FEC

Modulation

Minimum-Shift-FSK

Symbol rate

100.0 and 200.0 Bd

Receiver settings

DATA, CW, LSB or USB

Input format(s)

AF, IF

Additional Info

ITA-5

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