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"Another technique worth trying: "for low-quality GNSS antennas ... wavelength-scale random antenna motion substantially improves the time to [single-frequency] integer ambiguity resolution." http://gpsworld.com/accuracy-in-the-palm-of-your-hand/"
"You might wish to consider the antenna-swap technique to speed up ambiguity resolution; here's a quotation from chap. 6 in the recent book by Leick et al. (2015), see doi:10.1002/9781119018612.ch6 for details:
6.4.3.4 Antenna Swap Technique
In vi…"
6.4.3.4 Antenna Swap Technique
In vi…"
"Yes, you can take it to the field with no laptop after you solder NS-RAW to NavSpark's SD-logging adapter board, and plug in an external antenna and battery pack.
See a picture at http://www.navspark.com.tw/blog/welcome-to-navspark-community, near "…"
See a picture at http://www.navspark.com.tw/blog/welcome-to-navspark-community, near "…"
"May I suggest the adapter board product description be updated at the web store so as to mention NS-RAW is supported; currently it takes a lot of searching to find out. Thanks."
"Hi Julio. Thanks for your comments.
So you:
- use NS-RAW and export a RINEX file;
- record the occupation start and end times in the field using an external device;
- modify the RINEX file to insert the event flags;
- process the modified RINEX i…"
So you:
- use NS-RAW and export a RINEX file;
- record the occupation start and end times in the field using an external device;
- modify the RINEX file to insert the event flags;
- process the modified RINEX i…"
"So to make it work in real-time, you used a radio link to receiver the base station's observations at the R-pi, which I assume was cable-connected to the rover.
Could you share more details about the radio link?
-F."
Could you share more details about the radio link?
-F."
"In trying to minimize power consumption while also keeping position uncertainty acceptable, it's preferable to maximize the uninterrupted session duration, so as to facilitate ambiguity resolution. E.g., it's better to have a single one-hour long se…"
RTK systems are expensive, but if one doesn't need real-time and have access to raw observables, it's possible to do post-processing using RTKLIB and the NS-RAW module. The problem is that surveyors often occupy landmarks in a stop-and-go fashion (o…
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