I did a Static GPS survey last Friday using Ashtech LXII GPS recievers with firmware 7G. When I processed the data the antenna heights were all wrong. For example station HILL was entered as 01.528 and showed up in the processsing software as 0.152. I am processing this data with GPPS 5.2. This happened on all 3 recievers and I input the Antenna heights on all 3. I recorded the Antenna heights in my field book, but I don't like to have to change all of them. I am going to run a test session with 15.230 and see if it shows up as 1.523. I have done some really large GPS networks with these recievers in the past and have always had excelent results.

Steve,

I've reviewed your posting.
To begin, I must point out your using an Ashtech Software that is not Y2K- EOW compliant. The GPSS Version 5.2 software your referring to in your post is obsolete. This software is 3-4 generations behind the times...

To more specific the "HOSE.exe" (receiver Download utility is not
Y2K, or EOW compatible. This is the primary reason why your seeing your HI's come out this way - Post Download. An HI Entered as 1.528m in the field, downloaded with the Non-Compliant EOW "Hose.exe" will yield the HI just as you reported 0.152 m. You can simply edit the Ashtech Site File to correct the HI, before processing your Baselines.

Ashtech has an EOW compliant "Hose.exe" utility posted to our Customer Support ftp server, which can be accessed through our Web Site. Please Download and use this version.

I would highly recommend upgrading your GPS Post-Processing
Software & your GPS receivers. You may run into additional problems using these obsolete GPS receivers & software. Technical Support on the GPPS Software is limited, for the primary reason that very few people remember how to use this obsolete S/w.

GPPS was the initial GPS post-processing I learned over 10 years ago. Alot has changed in the GPS game since then.
Technology marches on...

Bob LeMoine
Ashtech Precision Products