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Google explores these techniques as well. They're critical to improving accuracy in urban areas where you don't have line of sight to satellites (this is why yo

by skzv 4y ago

Google explores these techniques as well. They're critical to improving accuracy in urban areas where you don't have line of sight to satellites (this is why your GNSS (AKA GPS) location is terrible whenever you're in a city). Here's [0] a cool gif visualizing the principle of GNSS ray tracing taken from one of Google's blog posts [1]. Here's an article with more information about Google's techniques [2]. [0] https://1.bp.blogspot.com/-FskvGHx-IOc/X8qtZi1GUNI/AAAAAAAAP6g/4duEjkA3MtcikY_JKKfitWQUX73UNwCYACLcBGAsYHQ/s0/Untitled%2B%25283%2529.gif https://1.bp.blogspot.com/-FskvGHx-IOc/X8qtZi1GUNI/AAAAAAAAP... [1] https://android-developers.googleblog.com/2020/12/improving-urban-gps-accuracy-for-your.html https://android-developers.googleblog.com/2020/12/improving-... [2] https://insidegnss.com/end-game-for-urban-gnss-googles-use-of-3d-building-models/ https://insidegnss.com/end-game-for-urban-gnss-googles-use-o...

ehsankia 4y ago
That seems much more useful, since it applies to all Android apps, whereas Uber's solution would be limited to their app only.
- sieabah 4y ago
  Almost like they wrote a blog article about it so others could learn from it. If it were available to all android apps I don't know why Uber would go out of their way to reimplement it. So it must not be available to all apps and exclusive to Google maps and Waze
  - mpalmer 4y ago
    Uber's post is actually two years older than the Google one.
    - pooper 4y ago
      > April 19, 2018 / Global Yes, original post needs a (2018) in the title.
ilaksh 4y ago
I think it says that FLP (Fused Location Provider) is not built in to Android.
- yincrash 4y ago
  FLP is an SDK available on Android devices with Google Play Services (https://developer.android.com/training/location/request-updates https://developer.android.com/training/location/request-upda...). According to the blog post, it should theoretically be rolled out to any phone with Android 8 or later. The Uber blog post is from 2018, and Google's implementation came in 2020.
  - ilaksh 4y ago
    I tried to enter "now" and the stupid phone decided I was going for "not".
bobsmooth 4y ago
What a brilliant use of all that satellite imagery.

by skzv 4y ago

ehsankia 4y ago

That seems much more useful, since it applies to all Android apps, whereas Uber's solution would be limited to their app only.

sieabah 4y ago
Almost like they wrote a blog article about it so others could learn from it. If it were available to all android apps I don't know why Uber would go out of their way to reimplement it. So it must not be available to all apps and exclusive to Google maps and Waze
- mpalmer 4y ago
  Uber's post is actually two years older than the Google one.
  - pooper 4y ago
    > April 19, 2018 / Global Yes, original post needs a (2018) in the title.

ilaksh 4y ago

I think it says that FLP (Fused Location Provider) is not built in to Android.

yincrash 4y ago
FLP is an SDK available on Android devices with Google Play Services (https://developer.android.com/training/location/request-updates https://developer.android.com/training/location/request-upda...). According to the blog post, it should theoretically be rolled out to any phone with Android 8 or later. The Uber blog post is from 2018, and Google's implementation came in 2020.
- ilaksh 4y ago
  I tried to enter "now" and the stupid phone decided I was going for "not".

bobsmooth 4y ago

What a brilliant use of all that satellite imagery.