Hi, I have a very bad GPS accuracy. It is worse when I am in the car or bus, then accuracy is twice worse. My track looks like a zigzak even when I am going just straight. My other and older phone do it much better. Is there any antenna issue or this gps is just sh*t?
Also the compass is decalibrated all the time. On google maps it shows just wide spectrum instead of narrow field like my old phone, so almost 180 degree spread. Also not very accurate. For car nav it is ok accuracy, not jumps much, but when walking or recording a trace it is a big problem and for example for running app it will add distance and when sum it up it will be significant. Is my unit just bad or what? Can it be improved? It is hardware or software related thing?
When I am on other phone, the accuracy once dialed in it will stay like this, here it is fluctuating from good to worse and even sometimes very bad (like 100m).
You're not alone. I'm experiencing poor gps accuracy as well, but it's hard to tell whether it's software or hardware related.
I barely get less than 10m of accuracy when I test the gps using the "gps test" app, with clear view of the sky, with 15~ satellites in use.
Same here
Actually GPS and Compass are pretty accurate compared to my Nexus 6. check out screenshot, it was taken at my living room in a 2 story house, weather condition is cloudy and slight rain.
And what happens outside? Does it manage to retain high accuracy (up to 5 meters/16 feet)?
I'm getting quick fixes, high accuracy (15'), but apps like locus and ingress are very drifty. It's weird.
Related
For those who doesn't know "My Tracks" allows you to create tracks with the GPS, showing various info - average speed, average moving speed, height differences, etc.
In the last several weeks I found it useful to track my snowboarding sessions - where I am riding, how fast, etc. The problem is that there is some really strange problem - in 8 out of 10 cases after I start recording a new track it turns out I have a top speed of 460km/h. I ride really fast, yeah, but that fast?
I was wondering what could be the case? For obvious reasons I can't observe the program while riding - one fall and the phone is gone
When I am on the lift I can observe it and everything is normal. I had the suspicion that falls could cause this, but today I had several quiet bad falls, during one recording and yet i t was accurate.
Has anyone observed such behavior?
Try CardioTrainer, I like it better then MyTracks
My camera is extremely sensitive with illuminated objects.
If something is under sunlight, no matter what time of the day it gets always completely whited out and this when the sun or source of light is behind me.
Often the sky, if it's simply a sunny day becomes monocromatic etc.
This problem happens with either superior auto as well as manual setting 50 iso and lowering the exposure to the minimum.
it seems to me that the sensor is too sensitive or has a very narrow dynamic range.
Is it possible to re-calibrate it?
Often I also do not see any difference by changing the iso (the onscreen preview does not change on the fly).
Either in low or high light conditions.
Any suggested diagnostic and fix?
Thanks a lot
Hi all,
Now the warmer days are coming I am once again walking to work and notice some unusual bluetooth behaviour.
If I walk with P9 in my front jeans pocket there is a very bad connection and breaking up of the signal sometimes it it is 10 second breaks in the music.
If I hold the phone in my hand when I walk which is a greater distance away from the headphones the signal is improved and solid.
If I put the phone in my laptop bag at approximate same distance the connection is also improved and rock solid.
So please can anyone help me to understand this weirdness, I never experienced such an issue before.
If I experiment at home of in the gym or office leaving my phone somewhere stationary the connection is awesome for quite a long distance so I am bamboozled.
[file:///data/user/0/com]*—*16.06.2020 15:20*Schneier on Security
New research*is able to recover sound waves in a room by observing minute changes in the room's light bulbs. This technique works from a distance, even from a building across the street through a window.
Details:
In an experiment using three different telescopes with different lens diameters from a distance of 25 meters (a little over 82 feet) the researchers were successfully able to capture sound being played in a remote room, including The Beatles'*Let It Be, which was distinguishable enough for Shazam to recognize it, and a speech from President Trump that Google's speech recognition API could successfully transcribe. With more powerful telescopes and a more sensitive analog-to-digital converter, the researchers believe the eavesdropping distances could be even greater.
It's not expensive: less than $1,000 worth of equipment is required. And unlike other techniques like bouncing a laser off the window and measuring the vibrations, it's completely passive.
https://www.schneier.com/blog/archives/2020/06/eavesdropping_o_9.html
Yeah I read this article. It's very interesting technique but has needs a very specific condition.
What is the best way to hold and orient the Samsung Galaxy S21 Ultra for maximizing GPS signal reception?
Vertical, horizontal, sideways, face up, or face down?
I'll be using the S21 Ultra to record GPX tracks, and need to minimize inaccuracies in GPS data collection while I'm walking around.
Has more to do with objects that can hinder reception. Terrain, buildings etc.
Amount of available satellites can effect it too.
Check settings so it's at max precision and sample rate ie max battery consumption.
Locate the GPS antenna on a tear down and play with its orientation, etc. You want a direct line of sight to the satellite(s) it's using whenever possible. Power lines may effect signal integrity.