Changeset 2971 in ntrip
- Timestamp:
- Feb 6, 2011, 10:26:20 AM (13 years ago)
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trunk/BNC/bnchelp.html (modified) (13 diffs)
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trunk/BNC/bnchelp.html
r2963 r2971 175 175 3.10.3. <a href=#miscscan>Scan RTCM</a><br> 176 176 3.11. <a href=#pppclient>PPP Client</a><br> 177 3.11.1 <a href=#pppmount> Mountpoint</a><br>177 3.11.1 <a href=#pppmount>Obs Mountpoint</a><br> 178 178 3.11.1.1 <a href=#pppxyz>XYZ</a><br> 179 3.11.2 <a href=#pppopt>Options</a><br> 180 3.11.2.1 <a href=#pppphase>Use Phase Obs</a><br> 181 3.11.2.2 <a href=#ppptropo>Estimate Tropo</a><br> 182 3.11.2.3 <a href=#pppglo>Use GLONASS</a><br> 183 3.11.2.4 <a href=#pppgal>Use Galileo</a><br> 184 3.11.3 <a href=#pppoptcont1>Options cont'd</a><br> 185 3.11.3.1 <a href=#pppsigxyzi>XYZ Init</a><br> 186 3.11.3.2 <a href=#pppsigxyzn>XYZ White Noise</a><br> 187 3.11.3.3 <a href=#pppquick>Quick-Start</a><br> 188 3.11.3.4 <a href=#pppplot>PPP Plot</a><br> 189 3.11.4 <a href=#pppnmea>NMEA</a><br> 190 3.11.4.1 <a href=#pppnmeafile>NMEA File</a><br> 191 3.11.4.2 <a href=#pppnmeaport>NMEA Port</a><br> 192 3.11.5 <a href=#ppprecant>Receiver Antenna</a><br> 193 3.11.5.1 <a href=#pppantex>ANTEX File</a><br> 194 3.11.5.2 <a href=#ppprecantenna>Antenna Name</a><br> 195 3.11.6 <a href=#pppsatant>Satellite Antenna</a><br> 196 3.11.6.1 <a href=#pppsatantignore>Ignore Offsets</a><br> 197 3.11.7 <a href=#pppsigmas>Sigmas</a><br> 198 3.11.7.1 <a href=#pppsigc>Code</a><br> 199 3.11.7.2 <a href=#pppsigp>Phase</a><br> 200 3.11.7.3 <a href=#pppsigtrpi>Tropo Init</a><br> 201 3.11.7.4 <a href=#pppsigtrpn>Tropo White Noise</a><br> 202 3.11.8 <a href=#pppoptcont2>Options cont'd</a><br> 203 3.11.8.1 <a href=#pppsync>Sync Corr</a><br> 204 3.11.8.2 <a href=#pppaverage>Averaging</a><br><br> 179 3.11.2 <a href=#pppcorrmount>Corr Mountpoint</a><br> 180 3.11.3 <a href=#pppopt>Options</a><br> 181 3.11.3.1 <a href=#pppphase>Use Phase Obs</a><br> 182 3.11.3.2 <a href=#ppptropo>Estimate Tropo</a><br> 183 3.11.3.3 <a href=#pppglo>Use GLONASS</a><br> 184 3.11.3.4 <a href=#pppgal>Use Galileo</a><br> 185 3.11.4 <a href=#pppoptcont1>Options cont'd</a><br> 186 3.11.4.1 <a href=#pppsigxyzi>XYZ Init</a><br> 187 3.11.4.2 <a href=#pppsigxyzn>XYZ White Noise</a><br> 188 3.11.4.3 <a href=#pppquick>Quick-Start</a><br> 189 3.11.4.4 <a href=#pppplot>PPP Plot</a><br> 190 3.11.5 <a href=#pppnmea>NMEA</a><br> 191 3.11.5.1 <a href=#pppnmeafile>NMEA File</a><br> 192 3.11.5.2 <a href=#pppnmeaport>NMEA Port</a><br> 193 3.11.6 <a href=#ppprecant>Receiver Antenna</a><br> 194 3.11.6.1 <a href=#pppantex>ANTEX File</a><br> 195 3.11.6.2 <a href=#ppprecantenna>Antenna Name</a><br> 196 3.11.7 <a href=#pppsatant>Satellite Antenna</a><br> 197 3.11.7.1 <a href=#pppsatantignore>Ignore Offsets</a><br> 198 3.11.8 <a href=#pppsigmas>Sigmas</a><br> 199 3.11.8.1 <a href=#pppsigc>Code</a><br> 200 3.11.8.2 <a href=#pppsigp>Phase</a><br> 201 3.11.8.3 <a href=#pppsigtrpi>Tropo Init</a><br> 202 3.11.8.4 <a href=#pppsigtrpn>Tropo White Noise</a><br> 203 3.11.9 <a href=#pppoptcont2>Options cont'd</a><br> 204 3.11.9.1 <a href=#pppsync>Sync Corr</a><br> 205 3.11.9.2 <a href=#pppaverage>Averaging</a><br><br> 205 206 3.12. <a href=#streams>Streams</a><br> 206 207 3.12.1 <a href=#streamedit>Edit Streams</a><br> … … 1142 1143 </p> 1143 1144 1144 <p><a name="pppmount"><h4>3.11.1 Mountpoint - optional</h4></p>1145 <p> 1146 Specify a mountpoint if you want BNC to derive coordinates for the affected rover position through a Point Positioning solution.1145 <p><a name="pppmount"><h4>3.11.1 Obs Mountpoint - optional</h4></p> 1146 <p> 1147 Specify an observations mountpoint from the selected 'Streams' list if you want BNC to derive coordinates for the affected rover position through a Point Positioning solution. 1147 1148 </p> 1148 1149 <p> … … 1168 1169 </p> 1169 1170 1170 <p><a name="pppopt"><h4>3.11.2 Options</h4></p> 1171 <p><a name="pppcorrmount"><h4>3.11.2 Corr Mountpoint - optional</h4></p> 1172 Specify an orbit/clock corrections mountpoint from the selected 'Streams' list if you want BNC to correct your positioning solution accordingly. 1173 </p> 1174 1175 <p><a name="pppopt"><h4>3.11.3 Options</h4></p> 1171 1176 BNC allows to use different Point Positioning processing options depending on the capability of the involved receiver and the application in mind. 1172 1177 </p> 1173 1178 1174 <p><a name="pppphase"><h4>3.11. 2.1 Use Phase Obs - optional</h4></p>1179 <p><a name="pppphase"><h4>3.11.3.1 Use Phase Obs - optional</h4></p> 1175 1180 <p> 1176 1181 By default BNC applies a Point Positioning solution using an ionosphere free P3 linear combination of code observations. Tick 'Use phase obs' for an ionosphere free L3 linear combination of phase observations. 1177 1182 </p> 1178 1183 1179 <p><a name="ppptropo"><h4>3.11. 2.2 Estimate Tropo - optional</h4></p>1184 <p><a name="ppptropo"><h4>3.11.3.2 Estimate Tropo - optional</h4></p> 1180 1185 <p> 1181 1186 BNC estimates the tropospheric delay according to equation … … 1189 1194 </p> 1190 1195 1191 <p><a name="pppglo"><h4>3.11. 2.3 Use GLONASS - optional</h4></p>1196 <p><a name="pppglo"><h4>3.11.3.3 Use GLONASS - optional</h4></p> 1192 1197 <p> 1193 1198 By default BNC does not process GLONASS but only GPS observations when in Point Positioning mode. Tick 'Use GLONASS' to use GLONASS observations in addition to GPS (and Galileo if specified) for estimating coordinates in Point Positioning mode. 1194 1199 </p> 1195 1200 1196 <p><a name="pppgal"><h4>3.11. 2.4 Use Galileo - optional</h4></p>1201 <p><a name="pppgal"><h4>3.11.3.4 Use Galileo - optional</h4></p> 1197 1202 <p> 1198 1203 By default BNC does not process Galileo but only GPS observations when in Point Positioning mode. Tick 'Use Galileo' to use Galileo observations in addition to GPS (and GLONASS if specified) for estimating coordinates in Point Positioning mode. 1199 1204 </p> 1200 1205 1201 <p><a name="pppoptcont1"><h4>3.11. 3Options cont'd</h4></p>1206 <p><a name="pppoptcont1"><h4>3.11.4 Options cont'd</h4></p> 1202 1207 <p> 1203 1208 You may want to introduce specific sigmas for code and phase observations. You may also like to carry out your PPP solution in Quick-Start mode or output a time series of displacement compoments. 1204 1209 </p> 1205 1210 1206 <p><a name="pppsigxyzi"><h4>3.11. 3.1 XYZ Init - mandatory</h4></p>1211 <p><a name="pppsigxyzi"><h4>3.11.4.1 XYZ Init - mandatory</h4></p> 1207 1212 <p> 1208 1213 Enter a sigma in meters for the initial XYZ coordinate componentes. A value of 100.0 (default) may be an appropriate choice. However, this value may be significantly smaller (i.e. 0.01) when starting for example from a station with known XZY position in Quick-Start mode. 1209 1214 </p> 1210 1215 1211 <p><a name="pppsigxyzn"><h4>3.11. 3.2 XYZ White Noise - mandatory</h4></p>1216 <p><a name="pppsigxyzn"><h4>3.11.4.2 XYZ White Noise - mandatory</h4></p> 1212 1217 <p> 1213 1218 Enter a sigma in meters for the 'White Noise' of estimated XYZ coordinate components. A value of 100.0 (default) may be appropriate considering the potential movement of a rover. 1214 1219 </p> 1215 1220 1216 <p><a name="pppquick"><h4>3.11. 3.3 Quick-Start - optional if XYZ is set</h4></p>1221 <p><a name="pppquick"><h4>3.11.4.3 Quick-Start - optional if XYZ is set</h4></p> 1217 1222 <p> 1218 1223 Enter the lenght of a startup period in seconds for which you want to fix the PPP solution to a known XYZ coordinate. Constraining coordinate components is done in BNC through setting the 'XYZ White Noise' temporarily to zero. … … 1227 1232 <p><u>Figure:</u> BNC in 'Quick-Start' mode</p> 1228 1233 1229 <p><a name="pppplot"><h4>3.11. 3.4 PPP Plot - optional</h4></p>1234 <p><a name="pppplot"><h4>3.11.4.4 PPP Plot - optional</h4></p> 1230 1235 <p> 1231 1236 PPP time series of North (red), East(green) and Up (blue) coordinate components will be plotted in the 'PPP Plot' tab when this option is ticked. Values will be either referred to an XYZ reference coordinate (if specified) or referred to the first estimated XYZ coordinate. The sliding PPP time series window will cover the period of the latest 5 minutes. … … 1235 1240 </p> 1236 1241 1237 <p><a name="pppnmea"><h4>3.11. 4NMEA - optional</h4></p>1242 <p><a name="pppnmea"><h4>3.11.5 NMEA - optional</h4></p> 1238 1243 <p> 1239 1244 BNC allows to output results from Precise Point Positioning in NMEA format. 1240 1245 </p> 1241 1246 1242 <p><a name="pppnmeafile"><h4>3.11. 4.1 NMEA File - optional</h4></p>1247 <p><a name="pppnmeafile"><h4>3.11.5.1 NMEA File - optional</h4></p> 1243 1248 <p> 1244 1249 The NMEA sentences generated about once per second are pairs of … … 1255 1260 </p> 1256 1261 1257 <p><a name="pppnmeaport"><h4>3.11. 4.2 NMEA Port - optional</h4></p>1262 <p><a name="pppnmeaport"><h4>3.11.5.2 NMEA Port - optional</h4></p> 1258 1263 <p> 1259 1264 Specify the IP port number of a local port where Point Positioning results become available as NMEA messages. The default value for 'NMEA Port' is an empty option field, meaning that BNC does not provide NMEA messages vi IP port. Note that the NMEA file output and the NMEA IP port output are the same. … … 1263 1268 </p> 1264 1269 1265 <p><a name="ppprecant"><h4>3.11. 5Receiver Antenna - optional</h4></p>1270 <p><a name="ppprecant"><h4>3.11.6 Receiver Antenna - optional</h4></p> 1266 1271 <p> 1267 1272 BNC allows to correct observations for receiver antenna phase center offsets and variations. 1268 1273 </p> 1269 1274 1270 <p><a name="pppantex"><h4>3.11. 5.1 ANTEX File - optional</h4></p>1275 <p><a name="pppantex"><h4>3.11.6.1 ANTEX File - optional</h4></p> 1271 1276 <p> 1272 1277 IGS provides a file containing absolute phase center corrections for GNSS satellite and receiver antennas in ANTEX format. Entering the full path to such an ANTEX file is required for correcting observations for antenna phase center offsets and variations. It allows you to specify the name of your receiver's antenna (as contained in the ANTEX file) to apply such corrections. … … 1276 1281 </p> 1277 1282 1278 <p><a name="ppprecantenna"><h4>3.11. 5.2 Antenna Name - optional if 'ANTEX File' is set</h4></p>1283 <p><a name="ppprecantenna"><h4>3.11.6.2 Antenna Name - optional if 'ANTEX File' is set</h4></p> 1279 1284 <p> 1280 1285 Specify the receiver's antenna name as defined in your ANTEX file. Observations will be corrected for the antenna phase center's offset which may result in a reduction of a few centimeters at max. Corrections for phase center variations are not yet applied by BNC. The specified name must consist of 20 characters. Add trailing blanks if the antenna name has less then 20 characters. Examples: … … 1289 1294 </p> 1290 1295 1291 <p><a name="pppsatant"><h4>3.11. 6Satellite Antenna - optional</h4></p>1296 <p><a name="pppsatant"><h4>3.11.7 Satellite Antenna - optional</h4></p> 1292 1297 <p> 1293 1298 BNC allows to correct observations for satellite antenna phase center offsets. 1294 1299 </p> 1295 1300 1296 <p><a name="pppsatantapply"><h4>3.11. 6.1 Apply Offsets - optional if 'ANTEX File' is set</h4></p>1301 <p><a name="pppsatantapply"><h4>3.11.7.1 Apply Offsets - optional if 'ANTEX File' is set</h4></p> 1297 1302 <p> 1298 1303 Satellite orbit and clock corrections refer to the satellite's antenna phase centers and hence observations are <u>not</u> to be corrected for satellite antenna phase center offsets. Tick 'Ignore Offsets' to force BNC to not correct observations for satellite antenna phase center offsets. So far satellite antenna phase center variations remain unconsidered in BNC. … … 1302 1307 </p> 1303 1308 1304 <p><a name="pppsigmas"><h4>3.11. 7Parameter Sigmas</h4></p>1309 <p><a name="pppsigmas"><h4>3.11.8 Parameter Sigmas</h4></p> 1305 1310 <p> 1306 1311 You may like to introduce specific sigmas for code and phase observations and for the estimation of troposphere parameters. 1307 1312 </p> 1308 1313 1309 <p><a name="pppsigc"><h4>3.11. 7.1 Code - mandatory if 'Use Phase Obs' is set</h4></p>1314 <p><a name="pppsigc"><h4>3.11.8.1 Code - mandatory if 'Use Phase Obs' is set</h4></p> 1310 1315 <p> 1311 1316 When 'Use phase obs' is set in BNC, the PPP solution will be carried out using both, code and phase observations. A sigma of 5.0 m for code observations and a sigma of 0.02 m for phase observations (defauls) is used to combine both types of observations. As the convergence characteristic of a PPP solution can be influenced by the ratio of the sigmas for code and phase, you may like to introduce you own sigmas for code and phase observations which differ from the default values. … … 1319 1324 </p> 1320 1325 1321 <p><a name="pppsigp"><h4>3.11. 7.2 Phase - mandatory if 'Use Phase Obs' is set</h4></p>1326 <p><a name="pppsigp"><h4>3.11.8.2 Phase - mandatory if 'Use Phase Obs' is set</h4></p> 1322 1327 <p> 1323 1328 Specify a sigma for phase observations. Default is 0.02 m. 1324 1329 </p> 1325 1330 1326 <p><a name="pppsigtrpi"><h4>3.11. 7.3 Tropo Init - mandatory if 'Estimate tropo' is set</h4></p>1331 <p><a name="pppsigtrpi"><h4>3.11.8.3 Tropo Init - mandatory if 'Estimate tropo' is set</h4></p> 1327 1332 <p> 1328 1333 Enter a sigma in meters for the a-priory model based tropospheric delay estimation. A value of 0.1 (default) may be an appropriate choice. 1329 1334 </p> 1330 1335 1331 <p><a name="pppsigtrpn"><h4>3.11. 7.4 Tropo White Noise - mandatory if 'Estimate tropo' is set</h4></p>1336 <p><a name="pppsigtrpn"><h4>3.11.8.4 Tropo White Noise - mandatory if 'Estimate tropo' is set</h4></p> 1332 1337 <p> 1333 1338 Enter a sigma in meters per second to describe the expected variation of the tropospheric effect. Supposing 1Hz observation data, a value of 1e-6 (default) would mean that the tropospheric effect may vary for 3600 * 1e-6 = 0.0036 meters per hour. 1334 1339 </p> 1335 1340 1336 <p><a name="pppoptcont2"><h4>3.11. 8Options cont'd - optional</h4></p>1341 <p><a name="pppoptcont2"><h4>3.11.9 Options cont'd - optional</h4></p> 1337 1342 <p> 1338 1343 You may like to introduce sigmas for code and phase observations and the estimation of troposphere parameters. 1339 1344 </p> 1340 1345 1341 <p><a name="pppsync"><h4>3.11. 8.1 Sync Corr - optional</h4></p>1346 <p><a name="pppsync"><h4>3.11.9.1 Sync Corr - optional</h4></p> 1342 1347 <p> 1343 1348 Zero value (or empty field) means that BNC processes each epoch of data immediately after its arrival using satellite clock corrections available at that time. Non-zero value 'Sync Corr' means that the epochs of data are buffered and the processing of each epoch is postponed till the satellite clock corrections not older than 'Sync Corr' are available. Specifying a value of half the update rate of the clock corrections as 'Sync Corr' (i.e. 5 sec) may be appropriate. Note that this causes an additional delay of the PPP solutions in the amount of the update rate. … … 1350 1355 </p> 1351 1356 1352 <p><a name="pppaverage"><h4>3.11. 8.2 Averaging - optional if XYZ is set</h4></p>1357 <p><a name="pppaverage"><h4>3.11.9.2 Averaging - optional if XYZ is set</h4></p> 1353 1358 <p> 1354 1359 Enter the length of a sliding time window in minutes. BNC will continuously output moving average values ns and their RMS as computed from those individual values obtained most recently throughout this period. RMS values presented for XYZ coordinates and tropospheric zenit path delays are bias reduced while RMS values for Nort/East/Up (NEU) displacements are not. Averaged values for XYZ coordinates and their RMS are marked with string "AVE-XYZ" in BNC's log file and 'Log' section while averaged values for NEU displacements and their RMS are marked with string "AVE-NEU" and averaged values for the tropospheric delays and their RMS are marked with string "AVE-TRP". Example:
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