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Re: ✘ZED-F9P 24 hour scatter plot.


From: James Browning
Subject: Re: ✘ZED-F9P 24 hour scatter plot.
Date: Sun, 19 Dec 2021 12:35:46 -0800

On Sun, Dec 19, 2021, 12:07 PM Gary E. Miller <gem@rellim.com> wrote:
Yo All!

Since I have been working on TSIPv1, I could leave my ZED-F9P to do a
24 hour scatter plot, with MAX RTCM corrections.  Disappointing.

CEP(50) is stable at 0.488 m, but the CEP(99) blew up to 3.338 m!  Not
good enough for reliable autonomous nav.

Depends on whats getting navigated and stuff. It'll give your area, but anyone using satellite trilatteration as a single point of failure for a fully autonomous anything is stupid.

Marine vehicles should have a crew and instruments for them to navigate by, aircraft should have radio beacons, landmarks, compas, possibly gyroscopes (inertial), and crew. Autonomous cars should have reasonable maps, lidar, caneras (multi-spectrum), wheel rotation counters, compass, someone, and other stuff. 

I would love to see some 12 and 24 hour plots from users that say they
see better results than mine.

I'm gonna say mine are worse and leave it at that.

All my opinions are questionable at best.

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