Ian Tester left a comment for irajellis
"Fuck off spammer"
Sep 20, 2014
Ian Tester commented on Jason Lin's blog post Single Frequency Receiver RTK Result Comparison
"What type of solution is this? My tests with kinematic and PPP-kinematic gave results little better than "single" (i.e unassisted GPS)."
Aug 25, 2014
Ian Tester replied to Lukas K's discussion Function returning NMEA sentences?
"Look at the programmer guide available in the 'resources' section of the store. You simply provide a 'task_called_after_GNSS_update()' function - it gets called every time there's an update.
As for NMEA output, that is not currently available and I…"
Aug 23, 2014
Ian Tester left a comment for Lynn H. Klingensmith
"Fuck off, spammer."
Aug 13, 2014
Ian Tester replied to Jonathan Eisch's discussion NS-RAW position precision
"I've been doing some testing recently. I've been satisfied with the results using the PPP-static method and one receiver. It wanders around a bit but in less than an hour it seems to converge on a very accurate position. Just recently I've been tryi…"
Aug 10, 2014
Ian Tester left a comment for Anitadoely
"Fuck off, spammer."
Aug 5, 2014
Ian Tester left a comment for adicullece2014
"Fuck off spammer"
Jul 28, 2014
Ian Tester replied to Hari Nair's discussion Why the difference between altitude reported in GNSS viewer and the api?
"It sounds like one is in reference to mean sea level (MSL) and the other to the geoid. The supplied NMEA-0183 document says the GGA sentence supplies altitude from MSL (that is what the GNSS Viewer would show), but I can not find any mention of what…"
Jul 10, 2014
Ian Tester replied to Jordi Gauchia's discussion Navigation Modes
"Filtering. The raw fixes are noisy, so a certain amount of smoothing and extrapolation is applied to produce the data we get through the API or NMEA output. The navigation modes apply different filtering parameters. One of the Skytraq guys (Oliver o…"
Jul 9, 2014
Ian Tester replied to Martin Rongen's discussion NavSpark prototyping adapter board
"Nice. But what's that other board you're working on?"
Jul 8, 2014
Ian Tester replied to Timothy Chen's discussion GLONASS or BD in USA?
"Here's the Beidou-2 coverage in 2012 according Wikipedia. I'm covered down there in Australia, and NZ probably is too. For everyone else, GLONASS will be your only alternative to GPS until the Chinese launch some more satellites to expand their cove…"
Jul 3, 2014
Ian Tester replied to xiaobo's discussion How to get 3v3 lvttl Signal navspark Connection raspberryPi lvttl GPIO 14(TX) 15(RX) 18(pps)
"If you have a Windows machine, or an x86 Linux machine with Wine, use the GNSS viewer program to change the "COM port" settings. And be sure to set it to save to Flash so it will keep using those settings each time it is powered up."
Jun 29, 2014
Ian Tester replied to xiaobo's discussion How to get 3v3 lvttl Signal navspark Connection raspberryPi lvttl GPIO 14(TX) 15(RX) 18(pps)
"Have you connected ground as well? That completes the circuits of the other three connections."
Jun 29, 2014
Ian Tester replied to John Beale's discussion NS-GL cold start time (TTFF) is often less than 30 seconds (?)
"Ah, okay. That's simpler than my guess :P"
Jun 29, 2014
Ian Tester replied to John Beale's discussion NS-GL cold start time (TTFF) is often less than 30 seconds (?)
"Yes, GLONASS may be a part of getting a faster fix. GLONASS satellites transmit using FDMA, instead of GPS' CDMA. That means each satellite has its own frequency. And they may not need to be synchronised, although I don't know if they are or not. I…"
Jun 28, 2014
Ian Tester replied to Ian Tester's discussion Bluefruit EZ-link + NS-RAW + Android
"It's now in a case with an SMA antenna socket!

A little too large though. It was the smallest jiffy box with the width to fit the battery I have. I'm still not sure how to handle connecting the battery though. At the moment I have to open the box t…"
Jun 28, 2014
More…