PTI V² Data Products

Baseline Modeling Info (.binfo) File

Complete baseline modeling data is contained in the YYYDDD.binfofile. The .binfo file is created by the MSC baseline modelingapplication bFit on the summary (.sum) file (to provide time and delaymeasurement information) and a separately composed baseline fit script(.bfScript-- containing target designation and astrometricinformation). A sample .binfo file is given below:

# option printMeas# option printMeas# 1 command line arguments processed# HDC144208# HDC144579# HDC145457# HDC145675...# 435 data lines read from 101221.sum# Earth baseline position (long/latitude/altitude): -116.8633   33.3567  1680# Fit 431 extracted delays on 20 objects#  (4 delays excluded in 2 iterations)

Longitude and latitude are given in degrees, altitude in meters.(All three are compile-time constants in bFit.)

This is followed by a table (possibly empty) of model baselineresiduals per target:

# HDC14420852130.65321	3.677014	-9.377530	-9.377617	8.72712e-05	160.935321	77.17816052130.65350	3.683958	-9.347955	-9.348066	0.000111802	161.002468	77.09568952130.65379	3.690903	-9.318570	-9.318691	0.000120167	161.068386	77.01317352130.65408	3.697847	-9.289372	-9.289498	0.000126321	161.133080	76.930636...

Each line in the table contains the following space-delimitedfields:

field#	content	comments
1	JD	Modified Julian Date
2	UTC Time	UTC time (decimal hours)
3	Measured Delay	Measured delay (m)
4	Model Delay	Baseline fit model delay (m)
5	Delay Residual	Delay residual (meas - model) (m)
6	Target Local Azimuth	Local az (positive N from E) (deg)
7	Target Local Elevation	Local el (positive up from horizon) (deg)

The file concludes with a summary of the best fit baseline:

# Best-fit model baseline (ENUbias) (m):  -37.117638  -103.263488  3.318174  -12.913144# RMS residual delay (m): 4.64892e-05  (4 out of 435 delays excluded in 2 iterations)# baseline error est (m): 1.60047e-05  1.49425e-05  7.15186e-05  6.95199e-05# Full covariance matrix (m^2):# cov  2.56151e-10  2.1308e-11  -7.91593e-10  7.84487e-10  # cov  2.1308e-11  2.23279e-10  2.93993e-10  -2.98816e-10  # cov  -7.91593e-10  2.93993e-10  5.11491e-09  -4.96709e-09  # cov  7.84487e-10  -2.98816e-10  -4.96709e-09  4.83301e-09