Landmark/Ground Target Coordinates for WISP94	
=============================================
			RSF Data Management Group, RAR 3/94

The following is information used to verify ranging and pointing of
the CP4 radar during WISP94.  Coordinates of other project radars are
also listed.  Positions of hard targets and other radars are also
shown as referenced to the CP4 Az/Range coordinate system.

The positions of seven towers were determined by hand-held GPS survey.
Generally, it is expected that hard target positions are accurate to
about 2 seconds in both latitude and longitude.  The single exception
to this accuracy is the Hardin Tower, a target that could not be
approached due to locked gates.

Some notes on the targets and techniques are given in the "comments"
section, and after the table.

Name:		Coords(WGS84,map/GPS)   Elev  Twr hgt	CP4 coords	Comments:
		Lat	   Long		 (m)  (est, m)	Az     Rng(km)
------------	--------   ---------    ----  -------	------ -------	-------------------------------------------
CP4		40:06:08   104:21:26	1460		  n/a	  n/a	Elevation is to center of feedhorn
CP2		39:57:00   105:11:38	1743		256.68   73.39
Denver NEXRAD	39:47:13   104:32:44	1709		204.69   38.53  Info from Denver NWS, originally from OSF
CSU/CHILL	40:26:47   104:38:14	1437		328.07   45.03	(From work of Pratte)
MHR		39:52:42   104:45:26	1615		234.96   42.25	(From work of Pratte)
USWest Twr	40:04:24   104:17:02	1510      90	117.15    7.03  Free-standing, no cables
Fredrick Twr	40:05:46   104:54:05	1540     300	269.16	 46.41
BAO		40:03:00   105:00:14	1581	 300	264.00   55.47	(From work of Pratte)
Wiggens Twr	40:16:30   104:06:20	1335	 140	 48.17   28.75
Point-of-Rocks	40:29:08   104:21:02	1510	  60	  0.76   42.57
Adena Twr	40:01:48   103:56:36	1493	 125	102.80   36.21	Probably not visible from CP4
Hardin Twr 2	40:19:14   104:26:23	1450	 150	343.84   25.24  Position is approximate, only!


Notes:

1) CP4 position was determined by GPS using readings taken on three
separate days.  This reduces errors caused by "selective
availablility" degradation of the GPS signal.  Pratte survey targets
have similar accuracy, but the position of most other targets were
determined by a single period of GPS readings, and may have less
accuracy (everything is subjective!).

2) Target range/azimuth were determined by use of rectangular
coordinates (earth curvature was ignored).  However, care was taken to
adjust the coordinate system for variation in the length of both a
degree of latitude and a degree of longitude over the limited distance
to the target.  The technique used has an estimated error of about 10m
in absolute target positioning (over about a 50km range).

3) WGS-84 datum were used for all position determinations.