Is there a way to set the elevation mask for all observations from a particular station? Thus far the only way I've found to do it is to right-click on each vector individually and select the Process submenu to bring up the Process Settings box.

Barring that, is there a setting to establish the default for all stations? It seems to be set at 10°, and 15° seems to be a much more workable figure.

Thanks.

Jim,

AS 2.4

Select all the vectors at once...mark the first one, go to the last one, hold the shift key and mark it (all vectors in-between should be selected now). Use right click and voila...

Jimbo

Just what I was looking for -- thanks.


Edit: Unless I'm floundering again, this still means having to process all vectors first, then change the mask angle. That can be pretty time-consuming with large data sets; any way to change the default mask before processing?


Modified By Jim Frame on 11/9/2001 at 11:29 AM

Does your software indeed have the default elevation mask set to 10? I'd be very curious...I've always used 15 for static and on occasion have had to raise it a little instead of cutting data...(both are hard on the solution in my opinion)..

I've heard of some using 10 for RTK, but don't know if I'd think that this was real safe either...Some years ago many papers were devoted to multipath and tropospheric reduction and 15 seemed to be the point of safe cutoff...

TM

Trimble Man wrote:

Does your software indeed have the default elevation mask set to 10?

10° is indeed the default mask in Ashtech Solutions 2.5 (it is in my copy, anyway).

TM,

From memory the Locus receivers are defaulted at 15°.( I'll have to look.)
AS 2.4 is defaulted at 10°.

?????????

Jimbo

EDIT: Jim, I think you are correct. The mask angle doesn't seem to appear anywhere except after you process the vectors.
Modified By James Webb on 11/10/2001 at 9:59 AM

I always watch for these 'little' differences, since sometimes manufactures come up with 'in-house' ways to defeat things such as the Troposphere delay..You don't know about them until you see a difference in specs...
I do know that if you drop the mask to 10 degrees, then usually you'll pick up one or more SV's..Maybe they overdetermine using these and have tested where this is a better fix, even with increased tropo, than the higher mask...I would worry more about ground multi-path from the lower angle however...

TM- Thanks Guys..

Now ya got me to thinking...no matter how dangerous that might be....

If the Locus or the PM2 has its mask set at 15° then wouldn't any SV below that be blocked out and not recorded in the receiver's memory ?

OR would an "empty" channel record it and just not use it in the field solution for the blinking LED ??

Jimbo