Author Topic: Skydemon PaW v GDL  (Read 4043 times)

marioair

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Skydemon PaW v GDL
« on: May 25, 2020, 11:33:28 am »
What does Skydemon do differently using PilotAware versus GDL90 as the Navigation source?

I have PilotAware setup as a wifi. I've noticed I can get SD to work either using the PaW option or GDL90. Is there a loss of functionality if choosing one or the other?

The reason for the question is that I also have an ADL Weather unit which can transmit weather using GDL. So if i select GDL as the nav source in SD will I loose anything from the PaW capabilities?

Admin

Re: Skydemon PaW v GDL
« Reply #1 on: May 25, 2020, 08:55:24 pm »
There is no mechanism for bearingless targets over gdl90 I’m afraid
Thx
Lee

steveu

Re: Skydemon PaW v GDL
« Reply #2 on: May 25, 2020, 09:16:24 pm »
There is no mechanism for bearingless targets over gdl90 I’m afraid

That makes a serious hole in PAW functionality. Thanks, filed for future reference.

marioair

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Re: Skydemon PaW v GDL
« Reply #3 on: May 25, 2020, 09:26:25 pm »
Lee does paw transmit GDL or Flarm?

Admin

Re: Skydemon PaW v GDL
« Reply #4 on: May 25, 2020, 10:24:49 pm »
There is no mechanism for bearingless targets over gdl90 I’m afraid

That makes a serious hole in PAW functionality. Thanks, filed for future reference.

Hi Steve
This is a limitation of gdl90, not PAW.
The protocol does not support bearingless targets
Thx
Lee

Admin

Re: Skydemon PaW v GDL
« Reply #5 on: May 25, 2020, 10:25:34 pm »
Lee does paw transmit GDL or Flarm?
Both

Thx
Ler

marioair

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Re: Skydemon PaW v GDL
« Reply #6 on: May 26, 2020, 07:26:56 am »
Thanks Lee.
Do you know in Skydemon why there’s an option for GDL compatible devices and a separate one for pilotaware. Is it because of the fact paw transmits both Flarm and GDL and Skydemon can then listen on both? This is in context of being able to receive ADL weather over GDL at the same time as all the PaW data.

Admin

Re: Skydemon PaW v GDL
« Reply #7 on: May 26, 2020, 08:19:44 am »
Thanks Lee.
Do you know in Skydemon why there’s an option for GDL compatible devices and a separate one for pilotaware. Is it because of the fact paw transmits both Flarm and GDL and Skydemon can then listen on both? This is in context of being able to receive ADL weather over GDL at the same time as all the PaW data.

In Skydemon, the choices are mutually exclusive - either/or.
If I recall correctly - EasyVFR is an enable, so both can be enabled at the same time

Thx
Lee

marioair

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Re: Skydemon PaW v GDL
« Reply #8 on: May 26, 2020, 08:29:53 am »
So should I try selecting EasyVFR?

I’ve posted a feature request to SD. please add your support to it to Timothy listens!



http://forums.skydemon.aero/Topic31236.aspx?Update=1

steveu

Re: Skydemon PaW v GDL
« Reply #9 on: May 26, 2020, 08:43:39 am »
There is no mechanism for bearingless targets over gdl90 I’m afraid

That makes a serious hole in PAW functionality. Thanks, filed for future reference.

This is a limitation of gdl90, not PAW.
The protocol does not support bearingless targets


Hi Lee,

I understand this, it shapes a choice is setting up a PAW, no criticism of PAW intended. If the maximum functionality for bearingless targets is a priority, and it would be for me, then select PAW as navigation source.

Admin

Re: Skydemon PaW v GDL
« Reply #10 on: May 26, 2020, 09:17:22 am »
I understand this, it shapes a choice is setting up a PAW, no criticism of PAW intended. If the maximum functionality for bearingless targets is a priority, and it would be for me, then select PAW as navigation source.

Hi Steve,
thanks, understood. In order to get bearingless targets over GDL90, there needs to be some co-development between ourselves and the EFB provider. GDL90 provides the capability of user-defined messages, we can construct a 'bespoke' message to describe bearingless targets, but there is a requirement for the EFB to decode that message correctly.
 
Thx
Lee

marioair

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Re: Skydemon PaW v GDL
« Reply #11 on: May 26, 2020, 09:26:39 am »
Lee
what is your preference?
1) work with Sd to get them to accept an extension of GDL
2) work with Sd to get them to accept dual format?

how well do you know Tim D?

Paul_Sengupta

Re: Skydemon PaW v GDL
« Reply #12 on: May 26, 2020, 03:02:44 pm »
Well enough to know that he's refused to do (1) in the past!  :o ;D

marioair

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Re: Skydemon PaW v GDL
« Reply #13 on: May 26, 2020, 03:09:45 pm »
:-)

I 100% agree with Tim on that one. Standards are there for a reason

so option (2) it is then?

Admin

Re: Skydemon PaW v GDL
« Reply #14 on: May 26, 2020, 03:18:05 pm »
Clarification
Tim refused to overload one of the existing (unused) fields in the GDL90 traffic report
He would prefer to create a new user specific format including bearingless targets and ModeS/3D ambiguity

so this could be done, needs agreement on all sides

thx
Lee