66
iGage
iG8 User Manual
VERSION2
40.7362249208
-111.8593433129
1298.9422114
15
The .REF file has decimal (DD.dddddddd) values for Latitude, Longitude and the Ellipsoid Height of the Ground Mark in
meters. The ‘15’ on the last line is the ‘RTK Broadcast ID’ entered by the user.
The .REF file is extremely useful for setting the base on the same Ground Mark on subsequent days, you only need to
supply the antenna height with the correct receiver model and the base can be loaded with exact coordinates
matching previous setups on the same mark.
.RW5 File Description
SurvCE tracks everything you do in the .RW5 file.
The file below shows the raw file entries for the example base setup. Each section is color coded to match the
description lines which follow:
--Entered Base HR: 6.5617 ft, Vertical
LS,HR6.9357
GPS,PN1,LA40.441040975179,LN-111.513363514941,EL1309.754897,--BB
--GS,PN1,N 7437123.6609,E 1540829.5613,EL4344.9974,--BB
--Base Configuration by Reading GPS Position
--DT01-10-2020
--TM17:22:21
--Entered Base HR: 6.5617 ft, Vertical
--Antenna Type: [IGAIG8 NONE],RA0.0676m,SHMP0.0839m,L10.1140m,L20.0911m,--L1/L2 Internal Antenna
BP,PN15,LA40.441040975179,LN-111.513363514941,EL1309.754897,AG2.0000,PA0.1140,ATAPC,SRBASE,--
--GS,PN15,N 7437123.6609,E 1540829.5613,EL4344.9974,--Base
--GT,PN15,SW1964,ST310997000,EW1964,ET310997000
A comment that details the HI (GM to ARP) height entered by the user.
LS is the HI + L1 (6.9357 = 6.5617 + 0.3740) in the Distance units (SFeet)
The following two lines were stored by pressing Store in Point List:
‘GPS’ The base position in DD.MMSSsssssss, the height is the ellipsoid height of the PC in meters.
‘--GS’ The grid coordinates and Orthometric Height of the Ground Mark in SFeet
4316.4974 = 4261.6129 – (-54.8818)
Ortho = Ellipsoid – Geoid
The red section is the final Base Configuration entry. It details the method, the date (DT), the time (TM).
The HR (Receiver Height) is shown with the measurement method: Vertical or Slant.
The
--Antenna Type
message includes everything needed to compute the PC from the GM for Vertical and Slant
measurements:
The 20-character antenna name:
[IGAIG8 NONE]
the receiver radius at the SHMP:
RA0.0676m
the distance from the ARP to the SHMP:
SHMP0.0839m
the L1 offset (distance from the ARP to the L1 PC):
L10.1140m
the L1 offset (distance from the ARP to the L2 PC):
L20.0911m
The final three lines include a BP (Base Point) 3-record set which includes
BP record:
PN
Point ID
LA
Latitude in DD.MMSSssssssss
LN
Longitude in DDD.MMSSsssssss formant
EL
Elevation of PC in meters
AG
Antenna-Ground, HI (GM to ARP), Instrument Height in meters
PA
Phase Center to Antenna: L1 Offset in meters
ATAPC
broadcast point Phase Center: broadcast coordinate is for PC
A --GS comment record:
PN
Point ID
N
Projected Northing
W
Projected Easting
EL
Orthometric Elevation of the Ground Mark in job units
--
Description ‘Base’
A – GT comment record (included if ‘Store GPS Accuracy’ is enabled)
PN
Point ID