And, Oh by the way...
We've had discussions about a requirement that a purchaser go thru some type of online training with a quiz at the end so that they prove that they know how the device works before they are allowed to Activate the device.
There are WAY TOO MANY USERS who don't bother to RTFM before heading out with SPOT.
Hmmm. I thought I'd followed up, but it's not on the other thread. So here's an update. Another guy from YOSAR and I did a pretty extensive set of interviews with Kat,the person who activated the SPOT; her brother (who came out to the Inyo when the SAR got underway); with the SPOT dispatcher in Texas; with California Office of Emergency Services and some testing of various possibilities.
Significantly, I have not talked to Inyo Sheriff/SAR (above my pay grade). We're calling this "Forensic GIS".
Briefly, here's what we found and what may have happened:
1) Kat is a really nice person and happy to cooperate. YOSAR and I agreed her activating the 911 function was reasonable given her equipment (not adequate) and the conditions.
2) SPOT gave me the coordinates they passed on to California Office of Emergency Management. The coordinates were correct for where she was. The SPOT device worked correctly. Spot said they'll give coordinates in Degrees Minutes Seconds or Decimal Degrees. They will also send a description of the nearest named point. Unfortunately, at the time, they would only do this if asked. There was no record of which coordinate values (DD or DMS) were relayed or if a geographic location was also sent. However, what they had on file were right.
Coordinates are: 36.373333, -118.135000 (DD -- SPOT's usual format)
+36° 22' 24.00", -118° 8' 6.00" (Kat has written extensively in her blog about where she was, so publishing this seems OK).
3) Cal OEM then passed the coordinates on to Inyo SAR.
4) Inyo SAR began to search just north of Lone Pine and west of 395.
5) Inyo SAR called Sequoia Kings asking for the thoughts of the Whitney area supervisor.
6) Sequoia expressed surprise that, given Kat's previously known location (well south of Whitney Meadow on PCT) that she would be where Inyo is searching, but they said they'd reconfirmed coordinates.
7) On arrival, Kat's brother also expressed surprise at the location being searched.
There are several sources of error or mistake:
1) We don't know what coordinates went from OEM to Inyo. It was apparently verbal.
2) Using the coordinates that SPOT had, they come out correctly to where Kat actually was.. However, when you put them into Google Earth, you get a strange phenomenon. In most screen resolutions and sizes, the map that comes up shows an orange "A" in the center, leading you to think that's the location you are searching for. It's not, it's either advertising for something at that spot, or a location (e.g. LA Aqueduct).
I'm interested in what other people get as a graphic first result when entering those coordinates.
If you zoom out farther (and with most screens, you have to) you see a green arrow. That's the location of the place you're looking for. As a side note, Google does not have a great set of topo type maps, so there's few geographic locations. Not sure what SPOT uses as their base maps.
I don't know what kind of mapping program either Inyo or OEM used. It's long after the event. That's on the list, but not sure it'll happen... .
3) It's also possible Inyo was not familiar with the coordinate system and entered the coordinates wrong, giving a location well north of the actual. If anyone comes across an incorrect combo that maps to the SAR location, I'm really interested.
So anyway, the take home message is:
1) SPOT had the right coordinates.
2) As a standard protocol, SPOT should always send a jpg map; the coordinate in two types; and a description of the nearest geographic feature. I suggested this to the guy I talked to but, again, above my pay grade... .
3) Same with OEM and all intermediaries. Send a map that everyone can understand.
4) All SAR people have to become familiar with different coordinate systems and practice entering values in different types of software. TOPO! and ArcGIS Explorer (desktop or online) seem to have the best variety of base maps and Explorer has major access to satellite imagery. Explorer also handles more types of coordinate values with the add-in you can get from their resource site.
5) I wrote a "hiker responsibility" flyer for people carrying signaling devices for Sequoia Kings. It's posted on their web site.
George