Real-Time Kinematics Explained

No video

Real-Time Kinematics Explained

Рет қаралды 36,239

SparkFun Electronics

Күн бұрын

Пікірлер: 39

@Sembazuru Жыл бұрын

Minor correction... The L-band geosynchronous satellites aren't "somewhere over the southern hemisphere"... Yes, south of you, but it (and all other geosynchronous satellites) orbit over the equator.

@JonathanBeri Жыл бұрын

Great video! Very informative on a subject I've always been curious about.

@webdeveloperninja9220 Жыл бұрын

You with Goliath?

@JonathanBeri Жыл бұрын

@@webdeveloperninja9220 yes I am!

@gunningopher 3 ай бұрын

I've been an RTK user since the mid 90's. I have also set up and operated RTK networks. I am a trainer and on a standards development team for a large state DOT. There is some OK general information here, but I take issue with almost every assertion on this video. It is basically a sales pitch and should be taken as such.

@byronwatkins2565 Жыл бұрын

Actually, satellite clocks seem to tick SLOWER due to their relative motion. However, our clocks also tick slower due to our location inside earth's gravitational field. I believe that the gravity effect is about twice as large as the motion effect (though I might have these reversed, the factor of two is quite close). If I have which is largest correct, then the net compensation makes it seem that your misstatement is correct.

@benargee 10 ай бұрын

At the end of the day if the deviation is known and constant, compensation is possible.

@smithbmj Жыл бұрын

Enjoyed the video. I do have a question. For Bluetooth applications, can the rover unit be configured for ellipsoidal, geoidal with appropriate geoid model, or orthometric height? Antenna height? Thank you

@MrWaalkman Жыл бұрын

@7:24 Here's my guess: Punkin Center? What do you have for tracking objects within a building without using satellites?

@jessmac2379 7 ай бұрын

What's the tiniest RTK module I can attach to a small drone? Also what is its max range?

@eliz1222 2 ай бұрын

Can you also explain what’s PPK?

@jomfawad9255 Жыл бұрын

Any plans on making emg sensors with dry electrodes?

@New_World_Disorder 4 ай бұрын

Does it work if there are trees?

@tszabon Жыл бұрын

Is there a technology that would enable RTK measurements in dense urban areas and in places surrounded by trees and tall buildings? It would be a great help in my work (architectural visualizations) where we have to accurately and quickly measure points in "difficult" conditions.

@conorstewart2214 Жыл бұрын

You could always try using some form of UWB instead. It isn’t linked to GPS but is another method of getting relative positions between anchors (base stations) and a moving module.

@Flumphinator 10 ай бұрын

This is *wild*.

@stagrei8233 Жыл бұрын

I have a stupid question. Is there a way to use a base station outside and transfer signal inside a building so I can get more precision when I scanning with SLAM technology ?

@conorstewart2214 Жыл бұрын

You should have a look at UWB. It doesn’t use GPS but uses a few base stations you would need to set up to calculate the position of a moving module.

@stagrei8233 Жыл бұрын

@@conorstewart2214 Thanks, I will look into that.

@stephenmackay9762 Жыл бұрын

How much is the satellite subscription service for the L-Band after the 1 year service ends? Is there a way to get the 14mm accuracy without a subscription service?

@LrbinMT 9 ай бұрын

$500 - hopefully that might come down as more people get the Facet l-mode

@freedomhillbilly348 11 күн бұрын

@@LrbinMT I was hoping for the same thing. Unfortunately the cost actually went up to $600/yr as of 2024. At that price I held off and am looking into getting a second FACET $700) to use as a Base/Rover. But I really like the idea of setting up my own Reference Station. Here in NH we only have 3 CORS for the whole State.

@whatthefunction9140 Жыл бұрын

Why use the ground based stations if there is a satellite...? What am I missing

@xsk8rat Жыл бұрын

I believe, that the satellite is a subscription service, with the first year included with the HW purchase. After which, the subscription service must be renewed.

@Sembazuru Жыл бұрын

In addition to what @xsk8rat says, there are some locations where the portion of the sky (southern sky for us northern hemispherites, northern sky for all those southern hemispherites) where the satellite resides is blocked by mountains, buildings, mountain trolls, your annoying neighbor, etc. This is exacerbated the closer to either pole you get as the location in the sky the satellite is gets closer to the ideal horizon. I don't know how many of those L-band satellites there are around the globe, but there may be some places that there isn't one right overhead and you can't see the next one either to the east or the west of your location.

@weirdsciencetv4999 Жыл бұрын

By having a known, fixed position, it can use its own calculated error to compensate for errors introduced by the environment. It’s sending correction data.

@blakehouchin2304 Жыл бұрын

Also worth adding is that u-blox PointPerfect correction service for L-Band corrections is currently only available in the USA's 48 contiguous states and Europe.

@devildogfoxhound1247 Жыл бұрын

You missed nothing, satellite systems aren’t that accurate.