AW: SETI public: Remote SETI Back Office Rules

• Previous message: James Brown: "SETI public: Remote SETI Back Office Rules"
• In reply to: James Brown: "SETI public: Remote SETI Back Office Rules"

> I would like your input on the proposed back office rules.
> Do you think they will work? Additions? Subtractions?

A concept for a site's remote control over the Internet is challenging.
Although I can not comment on the back office rules, there are some
hints about data access organization instead.

On a server for VLBI purposes it was useful to organize all data by
chunks of milliseconds. Independently if the data acquisition runs on
2.633 MegaSamples per second as in my first prototype or if it is 10, 20
or even 50 Megasamples per second, all data that was collected during a
millisecond will constitute a data chunk.

The online access to such a repository is organized by addressing the
millisecond where a data chunk is needed from. This organization method
prevents from streaming all data to all listening stations all the time
and allows for randomly accessing arbitrary chunks of data when they are
really needed.

In order to get an overview about the complete repository data a survey
chart is available that combines the following information on a glance:
- average of each data chunk
- variance of each data chunk
- min and max values of each data chunk
- signal run and spectrum of a particular data chunk
- a zoom area for e.g. 2 min.
- a short term are for e.g. 30 min.
- a long term area for e.g. 12 hours

An example is available at http://vlbi.wegalink.net/img/dataXsurvey.bmp
It shows the sun travelling through the main focus of a 90 cm dish which
is operated at 10.6 GHz.

Maybe just as an idea for other aplications.

Eckhard Kantz

• Previous message: James Brown: "SETI public: Remote SETI Back Office Rules"
• In reply to: James Brown: "SETI public: Remote SETI Back Office Rules"

This archive was generated by hypermail 2.1.6 : Tue Apr 12 2005 - 13:44:18 PDT