Set two pins (5/8" with caps in the yard)...

Measured and meaned with three different tapes (allowing for temp, but not sag since it was a very short distance).

18.59...18.58...18.60...
Mean was 18.59 (pure ground distance).

Remember this! 18.59...it's what we are trying to duplicate...

Ran L1 only from a HARN monument (TWO) to both points (didn't process the vector from point to point).

Inverse 18.632 (0.042)...Pretty good...

Processed the direct vector and adjusted the network.. 18.632 (still 0.042)...


Okay, now I have a baseline to compare to that shows some good coorelation....

Have run four OPUS sessions on both points but only two have processed at this point...(yes, I sent NGS a message, but it may take up to two weeks for them to respond)...and this isn't a diss...They don't respond until they fully view all the data and feel comfortable with their answer...

Have done two other OPUS Sessions this am and evening (while at work) that I hope resolves the other station so I can get a valid inverse.....

Just trying to lay down some ground rules for 'my' part of the experiment....If the coordinates are different, then maybe I don't worry as long as the point to point is good....
We'll see this weekend and more...

TM

TM, you the man!

Keep us posted, please.

TM,

Have you done your mission planning check yet (for 02.034)? The constellation really ain't all that good for the 8 hour duration.

Space weather may be challenging as well. The "9800 series" of sunspots looks fairly potent. There was a M3.6 flair yesterday from 9787 (I think was the one) that should not have any effect. The ones I'm worried about are 9800s which is huge and near "earth directed" and 9802. I've been watching 9800 since last friday or saturday. If they blow, they blow. We'll definately have some interesting data either way.

Glad all you guys are getting your hands dirty with this. Thanks.

J.D.

You are our Mission Control for this experiment...So you make the call..

When I first read your post, then I did pause to think, "Wouldn't 8 SV's during the day, even with the IONO and stuff, be a better solution that 5 on a quiet night"...Dang...Questions. Questions...Since we have to raise the mask pretty high, then maybe a better time (for a later experiment), would be when the birds are all aflock instead of a quiet sky...

This is still better than fishing...Still can have a cold one, but don't have to bait the hook..

TM

or I don't know how to GPS (I think there used to be a sex joke somewhere along those lines).

As for the mission planning, at my location I have dop spikes (with 15° mask) at 0700-0800 utc of 10+, the really big one between 1100-1200 utc of "out of range of chart" (4 sv's) and another minor spike beginning at 1400 (when I plan to actually end the CORS data session) and ending an 1445 utc of around 6. Your prospects may be much better at your latitude (I would run it through Ashtech Solutions Mission Planning but don't have your basic coordinates). I was just curious what your Trimble Mission Planning software showed for the session period.

As for the solar conditions, my guess is if we make it through the night without a M class flare from 9802, we should be o.k. The M3.6 flare from 9787 Jan 31 at 1400 (+/-) utc seems to have given us a bit of kP jump after about 24 hours, but should subside. It seems our biggest threat is currently from 9800, which has passed the central meridian and not exactly earth directed, and 9802, which is almost centered on us and capable of X class activity. I've noticed that it still takes some 24-48 hours for the kP index to jump after a solar coronal mass ejection. There would obviously be some effect within minutes of a major flare or cme (light speed) but I can't even guess at how to quantufy their effects.

So, my assessment is if we make it till 1500 utc 02/02/02 without a "disturbance in the force", our only hinderence will be the lack of quality constellation.

Just my totally uneducated WAGs.

J.D.

My intentions of joining the OGIE session were genuine, but with the whole family down with the flu my priorities changed rather suddenly. I'm afraid that there will be no PM2 data coming from my post (as in "screw the Locus on") tonight.

I plan to continue in the spirit of the experiments, however, as I gradually refine the coordinates of my backyard station.

In my flu-addled state yesterday, I thought that the session was planned for last night, and I just wasn't up for it. Feeling a bit more human today, I see that the ORGI (I've forgotten what the acronym means, so I may have misspelled it) is set for tonight. I've put a PM2 up on my backyard station and will let it run overnight.

Northern CA is back in the game, for whatever it's worth.


Modified By Jim Frame on 2/2/2002 at 4:24 PM

Optimistic Real Geodetic Intersections (I think). I came up with the acronym 'cause I liked the sound of it. Jimbo had the honor (if you call it an honor) of putting words on it to make it sound respectable. I had to come up with something other than OPIE since some of the OPIE concepts were being ignored. I still like the OPIE concept. It would sure be nice to email someone two seperate sessions of 8 hours of data from overnight sessions and have them process the data and return results. Or, we can keep going with ORGI till we prove something is there.

J.D.

Just a take on the little brother to OPUS...I started a thread some months ago about sending in 'ORGIE' type data sets (8 hours or more) and asking the NGS to process them , much as OPUS...Never heard a word from them at all, but I believe that they are watching our little 'speriment..

One thing that several of us have talked about (both here and in e-mail) is the notion that sometimes we follow rules that were invented in the past...With no S/A, more SV's, then maybe they don't apply anymore...Or do they?

TM- Membership Number #003 in the Redneck Scientific Study Group...RSSG

TM coined the phrase Opie and planted a seed. "Gee Paw, I traded Aint Bea for some seeds, and look what they done growed into". "Now you hush up and go to bed Ope, you might wake up the the decent L2 types".

sorry, got carried away...