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Careful everyone, DJI drones seem to be losing GPS..
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735 79 2021-12-4
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AntDX316
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Careful everyone, DJI drones seem to be losing GPS at times.  The M2Z and Inspire 1 today have cut out a bunch of times randomly even while having way more than 10 sats.  I had 0 sats w/ the Air 2 and it was still super stable a few days ago and before that.  The GPS cut outs could be because there are massive satellite cyber wars going.  I can still fly the M2Z and Inspire 1 but it can get scary when it just jolts going the momentum it was going Before the GPS cut out.  Basically almost crashed a few times and definitely once but still did the mission w/ successful results and very impressed clients!

Basically, try to fly line of sight only.  React as fast as possible and give as much space between your drone and what ever obstacle is near it as margin for error to react.

I have "yet" to know what would happen during mapping missions w/ a GPS cut out on Pix4D (have used it Tons of times successfully).  You can't fly that manually like you can with DJI Go 4 for intervention.  It has to RTH.  I may have to decline All mapping jobs until something can be understood with what is happening.  I've flown DJI for years w/o issue but today was scary.
2021-12-4
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DAFlys
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Did you check UAV forecast to see how many should have been available and what the Kp index was?
2021-12-5
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Labroides
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There is no widespread issue with the GPS system or with DJI drones and GPS.
There are a number of points in your post that make no sense at all and reveal your lack of understanding of how GPS and your drones work.

The M2Z and Inspire 1 today have cut out a bunch of times randomly even  while having way more than 10 sats.
If you had more than 10 sats, what "cut out"?

I had 0 sats w/ the Air 2 and it  was still super stable a few days ago and before that.
Why?
Perhaps you were flying down low with the VPS providing horizontal positioning?
If you lose GPS, your drone will still be quite stable.
It just won't have horizontal position holding, unless you have VPS providing that for you.


The GPS cut outs  could be because there are massive satellite cyber wars going.
There is no "massive satellite cyber wars going on".
Where do you get this nonsense from?

I have "yet" to know what would happen during mapping missions w/ a GPS  cut out on Pix4D (have used it Tons of times successfully).
If you had even a basic understanding, you'd know that the drone couldn't complete the mission and couldn't RTH without GPS.
You'd have to bring the drone back in atti mode.

I may have to decline All mapping jobs until something can be  understood with what is happening.  I've flown DJI for years w/o issue  but today was scary.
You should decline all drone jobs until you get some basic understandinmg of how your drone works.
Post flight data from one of the flights you don't understand and perhgaps we can work out what you are going on about.
Whatever it was (if it rewally was something), it wasn't anything that you've guessed at and suggested here.
None of that is remotely possible.

2021-12-5
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Labroides
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DAFlys Posted at 12-5 01:09
Did you check UAV forecast to see how many should have been available and what the Kp index was?

Did you check UAV forecast to see how many should have been available
No matter where or when you fly, there will always be many more sats than you need for good location data.
There is no need to ever check sat numbers in UAV forecast.

and what the Kp index was?
The Kp index has no effect on sat numbers or the drone's GPS reception.

Whatever his issue was (if there really was an issue), it had nothing to do with the sats out in orbit.
2021-12-5
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JJB*
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Thanks for the warning...

You have a great performing drone, your AIR2 flying with 0 sats super stable! Wish mine was that good, actually it is that good in OPTI mode.

One minor correction on your text though.   
...it has to RTH....
Little difficult for a DJI drone to RTH when loosing GPS, my own drones does not fly back in RTH with zero sats or did i miss to check mark an option in the FlyApp ofcourse.

cheers
JJB
2021-12-5
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DAFlys
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Labroides Posted at 12-5 01:42
Did you check UAV forecast to see how many should have been available
No matter where or when you fly, there will always be many more sats than you need for good location data.
There is no need to ever check sat numbers in UAV forecast.

Really.  That’s not what the Kp index states.



2021-12-5
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Labroides
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DAFlys Posted at 12-5 02:23
Really.  That’s not what the Kp index states.

[view_image]

If that was true, we'd all have a lot of GPS problems ... but we don't.
Neither do planes, ships and all the cars using GPS.
Wherever you got that from, it's nonsense.

And besides nothing in antman's story made any sense.'Whatever his issue was, it wasn't a GPS issue.

2021-12-5
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DAFlys
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Labroides Posted at 12-5 02:39
If that was true, we'd all have a lot of GPS problems ... but we don't.
Wherever you got that from, it's nonsense.

Except warnings are regularly communicated.

https://www.sciencetimes.com/amp ... s-gps-red-alert.htm

2021-12-5
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Labroides
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DAFlys Posted at 12-5 02:41
Except warnings are regularly communicated.

https://www.sciencetimes.com/amp/articles/34346/20211104/massive-solar-flare-continues-hit-earth-flights-gps-red-alert.htm

They are and the dire warnings never come to anything.
It's a complete myth,.

Stick to posting videos you find and leave the technical stuff to someone that understands it.
2021-12-5
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DAFlys
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Labroides Posted at 12-5 02:43
They are and the dire warnings never come to anything.
It's a complete myth,.

Please tell Canada it’s a myth.

https://www.nasa.gov/topics/earth/features/sun_darkness.html

2021-12-5
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Labroides
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Ít's a myth that it will have any noticeable effect on the drone's GPS or your flying.
Really

And besides .. that article is about an extreme event.
Yet the previous thing you posted mentioned GPS disruption above Kp3  .... a long way from an extreme event.
You won't have any GPS problems in Kp8 despite all the alarmist nonsense links you care to post.

2021-12-5
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DAFlys
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Labroides Posted at 12-5 02:47
Ít's a myth that it will have any noticeable effect on the drone's GPS or your flying.
Really

Other sites describe it as 4 and above - https://altigator.com/en/gps-status/
2021-12-5
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Labroides
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DAFlys Posted at 12-5 03:02
Other sites describe it as 4 and above - https://altigator.com/en/gps-status/

I already suggested that you should ignore this alarmist nonsense.
I did that because it won't have any effect on your drone's GPS or your flying ... even in Kp 8.

How about backing off with the hijacking of this thread.
I'd like to see antman's flight data and find out what his issue actually was.

If you want to rabbit on about unfounded nonsense, start a new thread.
2021-12-5
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Montfrooij
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Thanks for the warning!
2021-12-5
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Montfrooij
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DAFlys Posted at 12-5 03:02
Other sites describe it as 4 and above - https://altigator.com/en/gps-status/

I'm grabbing a bag of popcorn
2021-12-5
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DAFlys
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Montfrooij Posted at 12-5 04:25
I'm grabbing a bag of popcorn

Cheers Peter,   I suggest Butterscotch.
2021-12-5
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Montfrooij
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DAFlys Posted at 12-5 05:32
Cheers Peter,   I suggest Butterscotch.

Not sure if we have that here.
2021-12-5
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DAFlys
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Montfrooij Posted at 12-5 06:09
Not sure if we have that here.

Butterscotch is like caramel, but instead its made with brown sugar (caramel is white sugar)
2021-12-5
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Montfrooij
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DAFlys Posted at 12-5 06:21
Butterscotch is like caramel, but instead its made with brown sugar (caramel is white sugar)

I have seen (and eaten) it, I just don't remember seeing it as a snack in the supermarket.
2021-12-5
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vg1
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Labroides Posted at 12-5 02:47
Ít's a myth that it will have any noticeable effect on the drone's GPS or your flying.
Really

The KP index is very important, above theoretically 3 there may be a problem with GPS signal reception. With a value of 5, I would not be flying anymore.
2021-12-5
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Labroides
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vg1 Posted at 12-5 09:34
The KP index is very important, above theoretically 3 there may be a problem with GPS signal reception. With a value of 5, I would not be flying anymore.

Despite all the things you might read suggesting this, it's just not true.
There has never been a single drone incident that could be attributed to high Kp index events.
Any actual effect would be too small for anyone to notice.
2021-12-5
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Geebax
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Labroides Posted at 12-5 10:49
Despite all the things you might read suggesting this, it's just not true.
There has never been a single drone incident that could be attributed to high Kp index events.
Any actual effect would be too small for anyone to notice.

It is Y2K all over again. Plus a bit of Chicken Little.
2021-12-5
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NightThunder
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A strong solar flare CAN cause GPS to drop out. For example, in 1859 there was one such solar flare that hit the earth damaging the then early telegraph system causing fires and shocking telegraph operators. The event was named the "Carrigton Event". You can read about it here.

Not saying that this happened in the case the OP brought up but we were (are?) in a heightened state of solar activity and can cause disruptions in GPS signals. Just saying.
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Labroides
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NightThunder Posted at 12-5 14:07
A strong solar flare CAN cause GPS to drop out. For example, in 1859 there was one such solar flare that hit the earth damaging the then early telegraph system causing fires and shocking telegraph operators. The event was named the "Carrigton Event". You can read about it here.

Not saying that this happened in the case the OP brought up but we were (are?) in a heightened state of solar activity and can cause disruptions in GPS signals. Just saying.

Just saying is what journalists do every time there's any solar flare activity ... the same stories about what might happen are widely put about.
The whole world runs on GPS but we don't hear of any issues that do happen though ... just alarmist nonsense about what might happen.

If there was any effect, you wouldn't notice it because it would only affect your GPS accuracy by a metre or so.
But your GPS is already inaccurate by about 2.5 metres, so you would not notice even a big solar event, even though it took out all GPS in Canada back in 1859.

2021-12-5
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GaryDoug
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As I have stated before, solar flares have been linked to failures of ground-based LORAN usage in the 70's. LORAN was a ground based system similar to GPS. We had an advanced warning and the master station I was on witnessed a total loss of coverage for the Central Pacific system. I personally saw the remote station signals almost vanish in a few minutes from my screen. Maybe not for the higher frequencies of GPS, but still significant. The failures of the coverage was not widely adveritised after the fact of course.
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DAFlys
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Montfrooij Posted at 12-5 08:41
I have seen (and eaten) it, I just don't remember seeing it as a snack in the supermarket.

I did a quick google and failed to find in NL too.
2021-12-6
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Montfrooij
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DAFlys Posted at 12-6 00:53
I did a quick google and failed to find in NL too.

You can get something similar, but it is attached to something else. Like chocolate.
2021-12-6
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DAFlys
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Montfrooij Posted at 12-6 01:06
You can get something similar, but it is attached to something else. Like chocolate.

Shame,  looking how this thread is going you might need the extra energy of it.
2021-12-6
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Montfrooij
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DAFlys Posted at 12-6 01:29
Shame,  looking how this thread is going you might need the extra energy of it.

Yeah. I think I need it.
Started to participate in more discussions myself lately, due to lack of activity in the 'nicer' section.....
2021-12-6
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DAFlys
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Montfrooij Posted at 12-6 01:33
Yeah. I think I need it.
Started to participate in more discussions myself lately, due to lack of activity in the 'nicer' section.....

I just finished making the yearly micro calendar I give at Christmas so some friends/family perhaps I should show it off in the nicer section too.
2021-12-6
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Montfrooij
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DAFlys Posted at 12-6 01:34
I just finished making the yearly micro calendar I give at Christmas so some friends/family perhaps I should show it off in the nicer section too.

That would be nice!
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DAFlys
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I'll take a couple of shots later.   First I have to empty a 1/4 of the workshop to let the engineer get to the boiler for its service tomorrow.  Lots to move.
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Montfrooij
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DAFlys Posted at 12-6 01:39
I'll take a couple of shots later.   First I have to empty a 1/4 of the workshop to let the engineer get to the boiler for its service tomorrow.  Lots to move.

I did plan for this.
Our boiler is very accessible after my last renovation
2021-12-6
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DAFlys
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Montfrooij Posted at 12-6 01:42
I did plan for this.
Our boiler is very accessible after my last renovation

Mine would be but I have too many tools in front of it.  Most of its on wheels though.
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Montfrooij
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DAFlys Posted at 12-6 01:45
Mine would be but I have too many tools in front of it.  Most of its on wheels though.

I planned for this too. (so that won't happen) since I put the fridge on the other side.
So we won't be putting anything in front.
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DAFlys
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Montfrooij Posted at 12-6 01:51
I planned for this too. (so that won't happen) since I put the fridge on the other side.
So we won't be putting anything in front.

My biggest problem was that Im storing all the tiles for the kitchen floor infront of the table saw, so they all had to be moved first,  in the new year that will change when I re tile the kitchen floor.
2021-12-6
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Montfrooij
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DAFlys Posted at 12-6 02:50
My biggest problem was that Im storing all the tiles for the kitchen floor infront of the table saw, so they all had to be moved first,  in the new year that will change when I re tile the kitchen floor.

Yes, I have that problem too. Just not with the boiler.
Since that is impossible to block now.
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JJB*
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Montfrooij Posted at 12-6 02:52
Yes, I have that problem too. Just not with the boiler.
Since that is impossible to block now.

very nice "theekransje" ,  but better than irritating over solas storms....
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AntDX316
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DAFlys Posted at 12-5 02:23
Really.  That’s not what the Kp index states.

[view_image]

UAV Forecast is a good app.
2021-12-6
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Labroides
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AntDX316 Posted at 12-6 13:56
UAV Forecast is a good app.

Antman ... you had an issue.
You didn't understand what happened.
You came here to warn everyone, with a confusing explanation for what you observed.

We're all curious to know what it actually was.
Please post flight data so we can see if there's anything that anyone should be concerned about.
2021-12-6
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