Why so few base epochs?

Aaron S

Active Member
On the screenshot, you can see that I had my Triumph 1M base running for over 3.5 hours, but it only logged 433 epochs. This was in a setting with completely wide-open sky views. Shouldn't the epochs count be much closer the seconds it was set up, assuming it's logging at a 1Hz rate? I seem to remember the T2 logging more epochs as a base.


9290
 

Shawn Billings

Shawn Billings
5PLS
Somehow I think your recording interval was changed to 30 seconds instead of 1 second on your base. 13020/433=30+/-
 

Aaron S

Active Member
Somehow I think your recording interval was changed to 30 seconds instead of 1 second on your base. 13020/433=30+/-
That makes a lot of sense, but every time I start up the base I see that broadcast period is always set to 1 second (in yellow so I assume it matches the base). And I always send the config. to the base because it never gets the radio settings right if I don't. Maybe the base receiver is disregarding this command and doing 30 seconds anyway.
 

Matthew D. Sibole

Well-Known Member
5PLS
The record period for the base is shown at the top right of the screen. That has nothing to do with the transmit period shown in the radio configuration box at the bottom left.
 

Aaron S

Active Member
I guess I still don't understand...

The three CORS stations it used to solve the base point all have 1 second sampling rates (per the CORS website).

Also, all the stations it picked for the CORS solution are over 200 km away in other states. Minnesota (where I'm working) has hundreds of closer CORS stations, all with 1 second rates. Why didn't it use the closest stations?

If I click on the point in DPOS, and then click on the "i" under the "CORS Fixed" column for that point, the DPOS report shows it used 11534/11554 observations, which is closer to what I'd expect for a 217 minute setup.
 

Alexey Razumovsky

Well-Known Member
Staff member
5PLS
1. DPOSing with 1 second rate data is available on a day of observation. Next days it process with 30 second CORS data.
2. We have got DPOS report tied to CORS in a range of 100 km
9292
 

Aaron S

Active Member
I didn't realize that 1 second rate was only available on the same day you process the point. That makes sense why everything after 24 hours is at the 30 second rate.

As for the station used, this is what I get:
9294


What you posted is the stations I would expect to see - ones in Minnesota.
 
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