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 Post subject: Please explain ! Why so much of difference in both? (PIC)
PostPosted: Mon Mar 13, 2017 10:10 am 
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raghav1011 - FlightAware user avatar

Joined: Sat Mar 11, 2017 5:26 am
Posts: 12
Image


Check the photo attached in the link :)
Why there is so much of difference in dump1090 Running over Local Network and Website (online)??

On website i can see many more aircraft nearby, and on dump local i can barely spot a single Flight near the Maharastra Area (The bottem left corner of my radar radius) ??


Thanks !


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 Post subject: Re: Please explain ! Why so much of difference in both? (PI
PostPosted: Mon Mar 13, 2017 10:32 am 
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obj - FlightAware user avatar

Joined: Tue Sep 30, 2014 7:14 pm
Posts: 3550
Your local dump1090 display shows only aircraft which your receiver can directly hear messages from.
The website shows aircraft heard by many ads-b receivers and other data sources combined together into one map so it will include aircraft that you cannot directly receive.

Generally you need line of sight to an aircraft to be able to hear it. Distant aircraft need to be high or you will not see them as they will be below the horizon.


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 Post subject: Re: Please explain ! Why so much of difference in both? (PI
PostPosted: Mon Mar 13, 2017 10:41 am 
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raghav1011 - FlightAware user avatar

Joined: Sat Mar 11, 2017 5:26 am
Posts: 12
obj wrote:
Your local dump1090 display shows only aircraft which your receiver can directly hear messages from.
The website shows aircraft heard by many ads-b receivers and other data sources combined together into one map so it will include aircraft that you cannot directly receive.

Generally you need line of sight to an aircraft to be able to hear it. Distant aircraft need to be high or you will not see them as they will be below the horizon.


Thanks OBJ


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