Emlid

Links: GNSS system information / RTK / post-processing / surveying / etc


#1

Please post any links you think are helpful, like:

  • introductory information
  • advanced maths
  • (white)papers
  • guides
  • manuals
  • survey instructions / methods
  • etc.

A good overview of GNSS / RTK / Datum, etc:
https://www.e-education.psu.edu/geog862/
(click on the lessons list on the right-hand side)


a few links previously posted in the forum:
[quote="bide, post:1, topic:2278"] GPS Antennas: RF design considerations for u-blox GPS recievers (pdf) [/quote] https://www.u-blox.com/sites/default/files/products/documents/GPS-Antenna_AppNote_%28GPS-X-08014%29.pdf?utm_source=en%2Fimages%2Fdownloads%2FProduct_Docs%2FGPS_Antennas_ApplicationNote%28GPS-X-08014%29.pdf
[quote="bide, post:1, topic:2278"] And here is the datasheet on the antenna supplied with Reach: Tallysman TW4721 [/quote] http://www.tallysman.com/wp-content/uploads/TW4721_Datasheet_Rev1_4-1.pdf
[quote="bide, post:2, topic:3285"] the RTKLIB docs (for version 2.4.2) PDF [/quote] http://www.rtklib.com/prog/manual_2.4.2.pdf
A thread on live satellite maps: https://community.emlid.com/t/gnss-live-map-planning-best-reception-or-avoid-a-bad-time/2424
[quote="mfm, post:9, topic:355"] This u-blox application note [/quote] http://www.u-blox.ch/images/downloads/Product_Docs/GPS_Antennas_ApplicationNote%28GPS-X-08014%29.pdf
[quote="matthewbrooks, post:3, topic:847"] Here is the ublox M8n cmd manual and a DIYDrones thread on these possible commands if they can help.[/quote] https://www.u-blox.com/sites/default/files/products/documents/u-bloxM8_ReceiverDescrProtSpec_%28UBX-13003221%29_Public.pdf

http://diydrones.com/m/blogpost?id=705844%3ABlogPost%3A1867187&maxDate=2015-01-29T16%3A25%3A13.417Z



Reach Antenna & Ground Plane Choice
(Dmitriy Ershov) #4

(Dmitriy Ershov) #5

#6

The x-rays from flares are stopped by our atmosphere well above the Earth’s surface. They do disturb the Earth’s ionosphere, however, which in turn disturbs some radio communications. Along with energetic ultraviolet radiation, they heat the Earth’s outer atmosphere, causing it to expand. This increases the drag on Earth-orbiting satellites, reducing their lifetime in orbit. Also, both intense radio emission from flares and these changes in the atmosphere can degrade the precision of Global Positioning System (GPS) measurements.
Link http://hesperia.gsfc.nasa.gov/sftheory/spaceweather.htm

http://www.solarham.net/


Suddenly ar validation is low, float
#7

Update this one with usefull insight about GNSS and the Ionosphere
Article http://gpsworld.com/innovation-gnss-and-ionosphere-11036/

And Global Ionospheric (TEC) Maps
http://www.gdgps.net/products/tec-maps.html


#8

(Mike) #9

Some Manuals we wrote for the state


Some basic course material, I have written, along with some powerpoints.


#10

Datums:
https://vdatum.noaa.gov/docs/datums.html


(Igor Vereninov) #11

5 posts were split to a new topic: Recompiling Reach RTKLIB source code


GitHub version
(Andrea M.) #12

FREE GNSS Interregional Positioning Service of Piedmont Region and Lombardy Region in Italy - RTK and PPK
(Servizio gratutio di posizionamento, anche in termpo reale in Piemonte e Lombardia)
https://www.spingnss.it/


#13

GPS Service Outages & Status Reports
https://www.gps.gov/support/user/

For USA; scheduled GPS interference testing (military GPS jamming):