[amsat-bb] AO-85 telemetry discrepencies

Dave Remnant dave.remnant at ntlworld.com
Sun Oct 25 18:49:41 UTC 2015


I have been keeping a record of telemetry frames received (as per the total
shown in bottom right of software vs totals appearing in AMSAT Fox
Leaderboard Statistics.

 

My findings are shown below which show some large differences.

 

I have tried to understand where/why/how etc but can't find much to read
about the subject.

 

I am wondering if the server is not receiving all the packets then are the
experiments affected by this?

 

Can anyone explain why there are differences and what it means? According to
the software zero frames are queued so I am puzzled.

 

Has anyone else noticed this or am I the only person documenting this.

 

The table is below (I hope it comes out OK on the BB, if not please PM me
and I'll forward to whoever would like it to review)

 


Pass total

Decoded total in software

Server

Pass total

Difference

	Difference between PC & Server totals

	
1304

936

			368


78

1382

989

53

25

	393


95

1477

1048

59

36

	429


19

1496

1060

12

7

	436


95

1591

1135

75

20

	456


26

1617

1159

24

2

	458


93

1710

1206

47

46

	504


94

1804

1255

49

45

	549


122

1926

1326

71

51

	600

							
			
Total diff

232

		

 

Great job to all involved.

 

73 Dave (M0SAT)



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