# GNSS Technology **URL:** https://learn.safran-navigation-timing.com/c/gnss-technology/13.md?page=1 [Latest](https://learn.safran-navigation-timing.com/latest.md) · [Categories](https://learn.safran-navigation-timing.com/categories.md) **Page:** 2 --- ## [Potential Disruptions in Europe - EASA](https://learn.safran-navigation-timing.com/t/potential-disruptions-in-europe-easa/557)
**Author:** [@G-Man](https://learn.safran-navigation-timing.com/u/G-Man)\ **Replies:** 0\ **Last updated:** [March 30, 2022, 10:36am UTC](https://learn.safran-navigation-timing.com/t/potential-disruptions-in-europe-easa/557 "2022-03-30T10:36:29Z")
--- ## [Multi-Freq/Multi-Constellation Whitepaper](https://learn.safran-navigation-timing.com/t/multi-freq-multi-constellation-whitepaper/538)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 0\ **Last updated:** [March 16, 2022, 2:45pm UTC](https://learn.safran-navigation-timing.com/t/multi-freq-multi-constellation-whitepaper/538 "2022-03-16T14:45:01Z")
This is a very good overview of advantages with going MF/MC --- ## [Improving your GPS (Hemisphere)](https://learn.safran-navigation-timing.com/t/improving-your-gps-hemisphere/530)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 1\ **Last updated:** [March 8, 2022, 6:56pm UTC](https://learn.safran-navigation-timing.com/t/improving-your-gps-hemisphere/530 "2022-03-08T18:56:33Z")
Simple document on the fundamentals of GNSS along with some ways to improve. --- ## [How is tropospheric correction/effect generated in Skydel?](https://learn.safran-navigation-timing.com/t/how-is-tropospheric-correction-effect-generated-in-skydel/455)
**Author:** [@hongzhaozheng](https://learn.safran-navigation-timing.com/u/hongzhaozheng)\ **Replies:** 2\ **Last updated:** [February 16, 2022, 9:15pm UTC](https://learn.safran-navigation-timing.com/t/how-is-tropospheric-correction-effect-generated-in-skydel/455 "2022-02-16T21:15:16Z")
Hi, Can anyone explain how Skydel generates the tropospheric correction/effect on signals from satellite to ground UE? If in particular I chose Saastamoinen model, what is the magic hehind so that the tropospheric delay… --- ## [Fundamentals & GNSS Receivers from IEEE](https://learn.safran-navigation-timing.com/t/fundamentals-gnss-receivers-from-ieee/450)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 1\ **Last updated:** [February 15, 2022, 9:46am UTC](https://learn.safran-navigation-timing.com/t/fundamentals-gnss-receivers-from-ieee/450 "2022-02-15T09:46:01Z")
Some good information for beginners or simply a refresher for anybody :clap: --- ## [Open Source Receiver for GNSS?](https://learn.safran-navigation-timing.com/t/open-source-receiver-for-gnss/439)
**Author:** [@G-Man](https://learn.safran-navigation-timing.com/u/G-Man)\ **Replies:** 0\ **Last updated:** [February 10, 2022, 12:16pm UTC](https://learn.safran-navigation-timing.com/t/open-source-receiver-for-gnss/439 "2022-02-10T12:16:08Z")
I think that Orolia has started a trend :star\_struck:! The concept of building more open source devices and growing as a community is a growing trend and people like me are excited to see this change. --- ## [PVT - Position, Velocity & Time from GNSS Acadamy](https://learn.safran-navigation-timing.com/t/pvt-position-velocity-time-from-gnss-acadamy/427)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 0\ **Last updated:** [February 5, 2022, 8:22pm UTC](https://learn.safran-navigation-timing.com/t/pvt-position-velocity-time-from-gnss-acadamy/427 "2022-02-05T20:22:15Z")
Eduardo & team are doing a great job at building strong professionals across the globe! Here is a short video on triangulation and PVT. --- ## [Anti-Jamming & Anti-Spoofing](https://learn.safran-navigation-timing.com/t/anti-jamming-anti-spoofing/420)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 0\ **Last updated:** [February 2, 2022, 12:42pm UTC](https://learn.safran-navigation-timing.com/t/anti-jamming-anti-spoofing/420 "2022-02-02T12:42:20Z")
Very nice video brought to you by GNSS academy with guest speaker from Septentrio. --- ## [GNSS Corrections - Hexagon](https://learn.safran-navigation-timing.com/t/gnss-corrections-hexagon/411)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 0\ **Last updated:** [January 28, 2022, 6:26pm UTC](https://learn.safran-navigation-timing.com/t/gnss-corrections-hexagon/411 "2022-01-28T18:26:25Z")
This is an amazing interactive overview from Hexagon on GNSS corrections https://apps.kaonadn.net/5969909204910080/Corrective\_Services/index.html#;C5 --- ## [SBAS Basics](https://learn.safran-navigation-timing.com/t/sbas-basics/408)
**Author:** [@erik.oehler](https://learn.safran-navigation-timing.com/u/erik.oehler)\ **Replies:** 0\ **Last updated:** [January 28, 2022, 12:56pm UTC](https://learn.safran-navigation-timing.com/t/sbas-basics/408 "2022-01-28T12:56:21Z")
Good primer on the basics of SBAS: What is SBAS? | EU Agency for the Space Programme --- ## [Standard/s for PNT?](https://learn.safran-navigation-timing.com/t/standard-s-for-pnt/407)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 0\ **Last updated:** [January 28, 2022, 12:49pm UTC](https://learn.safran-navigation-timing.com/t/standard-s-for-pnt/407 "2022-01-28T12:49:29Z")
Could we finally be having some standards to help with PNT? --- ## [GPS/GNSS Fundamentals - GETSI](https://learn.safran-navigation-timing.com/t/gps-gnss-fundamentals-getsi/382)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 1\ **Last updated:** [January 27, 2022, 9:50pm UTC](https://learn.safran-navigation-timing.com/t/gps-gnss-fundamentals-getsi/382 "2022-01-27T21:50:08Z")
Here is some great information posted on/by GETSI and developed by some folks at Idaho State. \[ This activity is part of the On the Cutting Edge Exemplary Teaching Activities collection and has been reviewed by 1 other … --- ## [GNSS Terminology, Spectrum and FREE POSTER!](https://learn.safran-navigation-timing.com/t/gnss-terminology-spectrum-and-free-poster/368)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 1\ **Last updated:** [January 24, 2022, 6:51pm UTC](https://learn.safran-navigation-timing.com/t/gnss-terminology-spectrum-and-free-poster/368 "2022-01-24T18:51:41Z")
Check out this link to learn more about some of the basic GNSS terms as well as a visual representation of the GNSS Spectrum: GNSS Terminology Explained - Orolia Direct Link to Free Poster/Download: https://www.orolia.… --- ## [Official U.S. government information about the Global Positioning System (GPS) and related topics](https://learn.safran-navigation-timing.com/t/official-u-s-government-information-about-the-global-positioning-system-gps-and-related-topics/361)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 1\ **Last updated:** [January 20, 2022, 7:27pm UTC](https://learn.safran-navigation-timing.com/t/official-u-s-government-information-about-the-global-positioning-system-gps-and-related-topics/361 "2022-01-20T19:27:45Z")
One of the best resources for finding exact information relating to GPS technology. --- ## [What is CRPA?](https://learn.safran-navigation-timing.com/t/what-is-crpa/358)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 1\ **Last updated:** [January 19, 2022, 5:22pm UTC](https://learn.safran-navigation-timing.com/t/what-is-crpa/358 "2022-01-19T17:22:01Z")
As the industry migrates to more resilient PNT systems, there is more interest in CRPA than ever before. Here is a bit of information that explains how this works. --- ## [GNSS Satellite Systems (Novatel)](https://learn.safran-navigation-timing.com/t/gnss-satellite-systems-novatel/328)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 0\ **Last updated:** [January 10, 2022, 8:44pm UTC](https://learn.safran-navigation-timing.com/t/gnss-satellite-systems-novatel/328 "2022-01-10T20:44:24Z")
Nice overview of GNSS from Novatel/Hexagon --- ## [Time to First Fix (TTFF)](https://learn.safran-navigation-timing.com/t/time-to-first-fix-ttff/237)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 0\ **Last updated:** [September 15, 2021, 3:36pm UTC](https://learn.safran-navigation-timing.com/t/time-to-first-fix-ttff/237 "2021-09-15T15:36:51Z")
We commonly get questions about this topic and how to test. Here is some additional information that could be useful from the Orolia web site as well as two other sources: Basic GNSS Tests: Time To First Fix (TTFF) - … --- ## [Skydel Training Material](https://learn.safran-navigation-timing.com/t/skydel-training-material/304)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 0\ **Last updated:** [November 30, 2021, 6:07pm UTC](https://learn.safran-navigation-timing.com/t/skydel-training-material/304 "2021-11-30T18:07:28Z")
We now have a training material for educators and professors who are looking to add Skydel to their curriculum. Message me directly here on the fourm or e-mail me directly at robert.burke@orolia.com since the file is cu… --- ## [EUSPA - What is GNSS?](https://learn.safran-navigation-timing.com/t/euspa-what-is-gnss/321)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 0\ **Last updated:** [January 4, 2022, 2:39pm UTC](https://learn.safran-navigation-timing.com/t/euspa-what-is-gnss/321 "2022-01-04T14:39:33Z")
What is GNSS? | EU Agency for the Space Programme(GNSS,definition%2C%20GNSS%20provides%20global%20coverage. --- ## [Teach Engineering - Plot your Course](https://learn.safran-navigation-timing.com/t/teach-engineering-plot-your-course/320)
**Author:** [@rburke](https://learn.safran-navigation-timing.com/u/rburke)\ **Replies:** 0\ **Last updated:** [January 4, 2022, 2:32pm UTC](https://learn.safran-navigation-timing.com/t/teach-engineering-plot-your-course/320 "2022-01-04T14:32:53Z")
Great information here for beginners and great contribution from University of Colorado. [Previous page](https://learn.safran-navigation-timing.com/c/gnss-technology/13.md)