DGPS - Revision history

Maximum Verbosity: /* References */

2017-09-07T23:10:01Z

References

← Older revision		Revision as of 23:10, 7 September 2017
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	# [https://www.nlb.org.uk/dgps/dgps.htm Northern Lighthouse Board DGPS (Scotland & Isle of Man)]		# [https://www.nlb.org.uk/dgps/dgps.htm Northern Lighthouse Board DGPS (Scotland & Isle of Man)]
	# [https://www.trinityhouse.co.uk/dgps Trinity House DGPS (England, Wales, the Channel Islands and Gibraltar)]		# [https://www.trinityhouse.co.uk/dgps Trinity House DGPS (England, Wales, the Channel Islands and Gibraltar)]
-	~~# [Commissioners of Irish Lights (Northern Ireland and the Republic of Ireland)]~~
	# [http://www.navcen.uscg.gov/pdf/dgps/bcstand/dgpsbst.pdf Broadcast Standard for the USCG DGPS Navigation Service - COMDTINST M16577.1]		# [http://www.navcen.uscg.gov/pdf/dgps/bcstand/dgpsbst.pdf Broadcast Standard for the USCG DGPS Navigation Service - COMDTINST M16577.1]
	# [http://www.sigidwiki.com/images/6/66/Rtcm-sc104-transmission-characteristics-of-marine-differential-gps-stations.pdf Transmission Characteristics of Marine Differential GPS (DGPS) Stations]		# [http://www.sigidwiki.com/images/6/66/Rtcm-sc104-transmission-characteristics-of-marine-differential-gps-stations.pdf Transmission Characteristics of Marine Differential GPS (DGPS) Stations]
	# [http://www.ialathree.org/products/technical/index.html IALA Technical area]		# [http://www.ialathree.org/products/technical/index.html IALA Technical area]

Maximum Verbosity: /* References */

2017-09-07T23:09:41Z

References

← Older revision		Revision as of 23:09, 7 September 2017
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	# [http://www.blackcatsystems.com/software/dgps_decoding_software_sdr.html Amalgamated DGPS]		# [http://www.blackcatsystems.com/software/dgps_decoding_software_sdr.html Amalgamated DGPS]
	# [http://www.navcen.uscg.gov/?pageName=dgpsMain US Coast Guard DGPS Site]		# [http://www.navcen.uscg.gov/?pageName=dgpsMain US Coast Guard DGPS Site]
		+	# [https://www.amsa.gov.au/navigation/services/dgps/ Australian Maritime Safety Authority DGPS]
	# [http://www.ccg-gcc.gc.ca/CCG-DGPS/Marine-Differential-Global-Positioning-System Canadian Coast Guard DGPS Site]		# [http://www.ccg-gcc.gc.ca/CCG-DGPS/Marine-Differential-Global-Positioning-System Canadian Coast Guard DGPS Site]
		+	# [http://www.wsv.de/fvt/dgps/index.html German DGPS]
		+	# [https://www.nlb.org.uk/dgps/dgps.htm Northern Lighthouse Board DGPS (Scotland & Isle of Man)]
		+	# [https://www.trinityhouse.co.uk/dgps Trinity House DGPS (England, Wales, the Channel Islands and Gibraltar)]
		+	# [Commissioners of Irish Lights (Northern Ireland and the Republic of Ireland)]
	# [http://www.navcen.uscg.gov/pdf/dgps/bcstand/dgpsbst.pdf Broadcast Standard for the USCG DGPS Navigation Service - COMDTINST M16577.1]		# [http://www.navcen.uscg.gov/pdf/dgps/bcstand/dgpsbst.pdf Broadcast Standard for the USCG DGPS Navigation Service - COMDTINST M16577.1]
	# [http://www.sigidwiki.com/images/6/66/Rtcm-sc104-transmission-characteristics-of-marine-differential-gps-stations.pdf Transmission Characteristics of Marine Differential GPS (DGPS) Stations]		# [http://www.sigidwiki.com/images/6/66/Rtcm-sc104-transmission-characteristics-of-marine-differential-gps-stations.pdf Transmission Characteristics of Marine Differential GPS (DGPS) Stations]
		+	# [http://www.ialathree.org/products/technical/index.html IALA Technical area]

Maximum Verbosity at 00:08, 7 January 2017

2017-01-07T00:08:01Z

← Older revision		Revision as of 00:08, 7 January 2017
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-	The Differential Global Positioning System (DGPS) transmits correction information that improves the accuracy of the GPS system, from 15 meters to as good as 10 cm. These transmissions are in the ~~285~~-325 kHz band, and are interesting DX targets.	+	The Differential Global Positioning System (DGPS) transmits correction information that improves the accuracy of the GPS system, from 15 meters to as good as 10 cm. These transmissions are in the 283.5-325.0 kHz band, and are interesting DX targets.

	[[File:Dgps_waterfall.png\|200px\|thumb\|left\|A waterfall of the DGPS band]]		[[File:Dgps_waterfall.png\|200px\|thumb\|left\|A waterfall of the DGPS band]]

Maximum Verbosity: /* References */

2017-01-07T00:00:01Z

References

← Older revision		Revision as of 00:00, 7 January 2017
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	# [http://www.ccg-gcc.gc.ca/CCG-DGPS/Marine-Differential-Global-Positioning-System Canadian Coast Guard DGPS Site]		# [http://www.ccg-gcc.gc.ca/CCG-DGPS/Marine-Differential-Global-Positioning-System Canadian Coast Guard DGPS Site]
	# [http://www.navcen.uscg.gov/pdf/dgps/bcstand/dgpsbst.pdf Broadcast Standard for the USCG DGPS Navigation Service - COMDTINST M16577.1]		# [http://www.navcen.uscg.gov/pdf/dgps/bcstand/dgpsbst.pdf Broadcast Standard for the USCG DGPS Navigation Service - COMDTINST M16577.1]
-	# [http://www.sigidwiki.com/images/6/66/Rtcm-sc104-transmission-characteristics-of-marine-differential-gps-stations.pdf Transmission Characteristics Of Marine Differential GPS (DGPS) Stations]	+	# [http://www.sigidwiki.com/images/6/66/Rtcm-sc104-transmission-characteristics-of-marine-differential-gps-stations.pdf Transmission Characteristics of Marine Differential GPS (DGPS) Stations]

Maximum Verbosity: /* References */

2017-01-06T23:59:42Z

References

← Older revision		Revision as of 23:59, 6 January 2017
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	# [http://www.ccg-gcc.gc.ca/CCG-DGPS/Marine-Differential-Global-Positioning-System Canadian Coast Guard DGPS Site]		# [http://www.ccg-gcc.gc.ca/CCG-DGPS/Marine-Differential-Global-Positioning-System Canadian Coast Guard DGPS Site]
	# [http://www.navcen.uscg.gov/pdf/dgps/bcstand/dgpsbst.pdf Broadcast Standard for the USCG DGPS Navigation Service - COMDTINST M16577.1]		# [http://www.navcen.uscg.gov/pdf/dgps/bcstand/dgpsbst.pdf Broadcast Standard for the USCG DGPS Navigation Service - COMDTINST M16577.1]
		+	# [http://www.sigidwiki.com/images/6/66/Rtcm-sc104-transmission-characteristics-of-marine-differential-gps-stations.pdf Transmission Characteristics Of Marine Differential GPS (DGPS) Stations]

Maximum Verbosity: /* References */

2017-01-06T23:54:18Z

References

← Older revision		Revision as of 23:54, 6 January 2017
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	# [http://www.navcen.uscg.gov/?pageName=dgpsMain US Coast Guard DGPS Site]		# [http://www.navcen.uscg.gov/?pageName=dgpsMain US Coast Guard DGPS Site]
	# [http://www.ccg-gcc.gc.ca/CCG-DGPS/Marine-Differential-Global-Positioning-System Canadian Coast Guard DGPS Site]		# [http://www.ccg-gcc.gc.ca/CCG-DGPS/Marine-Differential-Global-Positioning-System Canadian Coast Guard DGPS Site]
		+	# [http://www.navcen.uscg.gov/pdf/dgps/bcstand/dgpsbst.pdf Broadcast Standard for the USCG DGPS Navigation Service - COMDTINST M16577.1]

ChrisSmolinski at 15:23, 4 January 2017

2017-01-04T15:23:01Z

← Older revision		Revision as of 15:23, 4 January 2017
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	The Differential Global Positioning System (DGPS) transmits correction information that improves the accuracy of the GPS system, from 15 meters to as good as 10 cm. These transmissions are in the 285-325 kHz band, and are interesting DX targets.		The Differential Global Positioning System (DGPS) transmits correction information that improves the accuracy of the GPS system, from 15 meters to as good as 10 cm. These transmissions are in the 285-325 kHz band, and are interesting DX targets.
		+
		+	[[File:Dgps_waterfall.png\|200px\|thumb\|left\|A waterfall of the DGPS band]]
		+

	Stations in the United States and Canada typically transmit on 1 kHz channel steps, while those outside of North America can also use 0.5 kHz channels. Transmissions are at 100 or 200 baud, using MFSK. DGPS Data packets contain a 10 bit ID. This ID is not unique, but using a combination of the ID along with the frequency and baud rate allows the specific station to be identified. Data transmissions are continuous, so it is possible to receive many messages per minute from strong stations, as well as the occasional message from more distant or weaker stations. DGPS stations can be used as propagation beacons, observing when messages from the various stations are being received.		Stations in the United States and Canada typically transmit on 1 kHz channel steps, while those outside of North America can also use 0.5 kHz channels. Transmissions are at 100 or 200 baud, using MFSK. DGPS Data packets contain a 10 bit ID. This ID is not unique, but using a combination of the ID along with the frequency and baud rate allows the specific station to be identified. Data transmissions are continuous, so it is possible to receive many messages per minute from strong stations, as well as the occasional message from more distant or weaker stations. DGPS stations can be used as propagation beacons, observing when messages from the various stations are being received.

ChrisSmolinski at 14:31, 3 January 2017

2017-01-03T14:31:27Z

← Older revision		Revision as of 14:31, 3 January 2017
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	Stations in the United States and Canada typically transmit on 1 kHz channel steps, while those outside of North America can also use 0.5 kHz channels. Transmissions are at 100 or 200 baud, using MFSK. DGPS Data packets contain a 10 bit ID. This ID is not unique, but using a combination of the ID along with the frequency and baud rate allows the specific station to be identified. Data transmissions are continuous, so it is possible to receive many messages per minute from strong stations, as well as the occasional message from more distant or weaker stations. DGPS stations can be used as propagation beacons, observing when messages from the various stations are being received.		Stations in the United States and Canada typically transmit on 1 kHz channel steps, while those outside of North America can also use 0.5 kHz channels. Transmissions are at 100 or 200 baud, using MFSK. DGPS Data packets contain a 10 bit ID. This ID is not unique, but using a combination of the ID along with the frequency and baud rate allows the specific station to be identified. Data transmissions are continuous, so it is possible to receive many messages per minute from strong stations, as well as the occasional message from more distant or weaker stations. DGPS stations can be used as propagation beacons, observing when messages from the various stations are being received.

-	Software to decode DGPS includes [[[http://www.blackcatsystems.com/software/dgps_decoding_software_sdr.html \| Amalgamated DGPS]]] which is available for Windows and Macintosh computers. Amalgamated DGPS can decode the entire DGPS band from I/Q recording files made by various popular SDR programs. It can also decode portions of the band from either WAVE audio files, or from live audio via a sound input.	+	Software to decode DGPS includes [http://www.blackcatsystems.com/software/dgps_decoding_software_sdr.html Amalgamated DGPS] which is available for Windows and Macintosh computers. Amalgamated DGPS can decode the entire DGPS band from I/Q recording files made by various popular SDR programs. It can also decode portions of the band from either WAVE audio files, or from live audio via a sound input.

	The following is the output from Amalgamated DGPS from a series of I/Q recording files, covering approximately a 24 hour period, as received in Maryland, USA. The list is sorted by the number of received messages (Count) from each station. Many DX stations were received, including from the West Coast and Panama. DGPS stations from Alaska, as well as Europe, have also been received at this location.		The following is the output from Amalgamated DGPS from a series of I/Q recording files, covering approximately a 24 hour period, as received in Maryland, USA. The list is sorted by the number of received messages (Count) from each station. Many DX stations were received, including from the West Coast and Panama. DGPS stations from Alaska, as well as Europe, have also been received at this location.
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	78756 847 058 059 301.0 200 Annapolis, MD United States 39.018 -76.61 82 158		78756 847 058 059 301.0 200 Annapolis, MD United States 39.018 -76.61 82 158
	</pre>		</pre>
		+
		+	==References==
		+	# [http://www.blackcatsystems.com/software/dgps_decoding_software_sdr.html Amalgamated DGPS]
		+	# [http://www.navcen.uscg.gov/?pageName=dgpsMain US Coast Guard DGPS Site]
		+	# [http://www.ccg-gcc.gc.ca/CCG-DGPS/Marine-Differential-Global-Positioning-System Canadian Coast Guard DGPS Site]

ChrisSmolinski: Created page with "The Differential Global Positioning System (DGPS) transmits correction information that improves the accuracy of the GPS system, from 15 meters to as good as 10 cm. These transmi..."

2017-01-03T14:28:29Z

Created page with "The Differential Global Positioning System (DGPS) transmits correction information that improves the accuracy of the GPS system, from 15 meters to as good as 10 cm. These transmi..."

New page

The Differential Global Positioning System (DGPS) transmits correction information that improves the accuracy of the GPS system, from 15 meters to as good as 10 cm. These transmissions are in the 285-325 kHz band, and are interesting DX targets.

Stations in the United States and Canada typically transmit on 1 kHz channel steps, while those outside of North America can also use 0.5 kHz channels. Transmissions are at 100 or 200 baud, using MFSK. DGPS Data packets contain a 10 bit ID. This ID is not unique, but using a combination of the ID along with the frequency and baud rate allows the specific station to be identified. Data transmissions are continuous, so it is possible to receive many messages per minute from strong stations, as well as the occasional message from more distant or weaker stations. DGPS stations can be used as propagation beacons, observing when messages from the various stations are being received.

Software to decode DGPS includes [[[http://www.blackcatsystems.com/software/dgps_decoding_software_sdr.html | Amalgamated DGPS]]] which is available for Windows and Macintosh computers. Amalgamated DGPS can decode the entire DGPS band from I/Q recording files made by various popular SDR programs. It can also decode portions of the band from either WAVE audio files, or from live audio via a sound input.

The following is the output from Amalgamated DGPS from a series of I/Q recording files, covering approximately a 24 hour period, as received in Maryland, USA. The list is sorted by the number of received messages (Count) from each station. Many DX stations were received, including from the West Coast and Panama. DGPS stations from Alaska, as well as Europe, have also been received at this location.

<pre>
Count ID ref1 ref2 kHz Baud City Country Lat Lon km Deg
3 816 032 033 304.0 100 Aransas Pass, TX United States 27.842 -97.065 2,269 241
7 907 304 305 320.0 200 Richmond, BC Canada 49.114 -123.183 3,753 302
23 881 262 263 302.0 100 Point Loma, CA United States 32.677 -117.25 3,666 271
32 886 272 273 287.0 100 Fort Stevens, OR United States 46.208 -123.96 3,834 297
46 828 246 247 301.0 100 Angleton, TX United States 29.301 -95.484 2,046 241
62 946 344 345 299.0 200 Rigolet, NL Canada 54.25 -58.5 2,127 34
83 918 310 311 286.0 200 Wiarton, ON Canada 44.75 -81.117 656 330
498 919 308 309 306.0 200 Cardinal, ON Canada 44.783 -75.417 579 12
806 936 332 333 319.0 200 Point Escuminac, NB Canada 47.075 -64.8 1,278 46
1037 934 336 337 307.0 200 Fox Island, NS Canada 45.361 -61.097 1,442 59
1513 814 028 029 293.0 200 English Turn, LA United States 29.886 -89.947 1,608 231
1676 972 901 902 302.0 200 Miraflores Panama 8.993 -79.585 3,425 185
2364 927 316 317 309.0 200 Lauzon, QC Canada 46.821 -71.165 920 29
2464 937 330 331 298.0 200 Hartlen Point, NS Canada 44.583 -63.45 1,238 60
4590 940 338 339 315.0 200 Cape Race, NL Canada 46.661 -53.075 2,076 60
5094 944 342 343 310.0 200 Cape Norman, NL Canada 51.509 -55.831 2,091 44
5337 830 100 101 296.0 100 Wisconsin, Point WI United States 46.708 -92.025 1,444 308
7622 809 018 019 289.0 100 Cape Canaveral, FL United States 28.467 -80.554 1,292 196
7861 836 112 113 292.0 200 Cheboygan, MI United States 45.656 -84.475 901 320
9198 971 903 904 307.0 200 Gatun Panama 9.261 -79.937 3,398 186
10242 839 118 119 322.0 100 Youngstown, NY United States 43.239 -78.972 427 338
15109 869 168 169 290.0 200 Louisville, KY United States 38.018 -85.31 745 258
15927 925 320 321 313.0 200 Moise, QC Canada 50.202 -66.119 1,443 32
16015 865 160 161 320.0 200 Millers Ferry, AL United States 32.095 -87.397 1,262 231
16196 864 158 159 317.0 200 St Paul [Alma], MN United States 44.306 -91.906 1,333 297
16885 935 334 335 312.0 200 Western Head, NS Canada 43.993 -64.67 1,124 61
20834 939 326 327 295.0 200 Partridge Island, NB Canada 45.239 -66.056 1,085 52
21937 827 244 245 312.0 200 Tampa, FL United States 27.85 -82.543 1,414 203
28094 831 102 103 298.0 100 Upper Keweenaw, MI United States 47.233 -88.628 1,257 316
30161 942 340 341 288.0 200 Cape Ray, NL Canada 47.636 -59.241 1,671 52
33737 778 192 193 292.0 100 Kensington, SC United States 33.491 -79.349 723 198
36717 808 016 017 314.0 200 Card Sound, FL United States 25.442 -80.452 1,619 193
38968 806 012 013 289.0 100 Driver, VA United States 36.963 -76.562 307 173
44091 929 312 313 296.0 200 St Jean Richelieu, QC Canada 45.324 -73.317 693 24
44747 926 318 319 300.0 200 Riviere du Loop, QC Canada 47.762 -69.606 1,073 31
46205 803 006 007 293.0 100 Moriches, NY United States 40.794 -72.756 378 70
46706 799 044 045 290.0 200 Penobscot, ME United States 44.453 -68.776 858 49
46743 771 196 197 294.0 100 New Bern, NC United States 35.181 -77.059 503 181
58907 863 156 157 311.0 200 Rock Island IL United States 42.02 -90.231 1,143 287
59027 838 116 117 319.0 200 Detroit, MI United States 42.306 -83.103 590 301
73240 777 218 219 304.0 200 Mequon, WI United States 43.202 -88.066 1,002 296
73891 792 136 137 297.0 200 Bobo, MS United States 34.125 -90.696 1,367 247
74725 844 094 095 324.0 200 Hudson Falls, NY United States 43.272 -73.542 489 35
74839 870 170 171 309.0 200 Reedy Point, DE United States 39.569 -75.572 121 97
75094 772 198 199 306.0 200 Acushnet, MA United States 41.749 -70.889 561 64
78252 804 008 009 286.0 200 Sandy Hook, NJ United States 40.475 -74.02 266 70
78756 847 058 059 301.0 200 Annapolis, MD United States 39.018 -76.61 82 158
</pre>