Data Object: station_data

The station_data table container is use to store the information about the a priori station model. Mainly this is the delay and coordinate polynomial spline models used for the station during correlation. The data stored in the table are the polynomial coefficients for each coordinate, time period, and polynomial power associated with each coefficient.

General Information

  • Class: station_coord_type

  • Class UUID: 769cfb37e4301e9272adcb53f217de1b

  • Rank: 3

  • Shape: the length of each dimension (e.g. [7, 2, 6] )

  • Strides: the stride between data in each dimension (e.g. [12, 6, 1] )

  • Total Size: the total number of data elements in the array (e.g. 84 )

  • Element Type: double

Aliases

alias

full class name

station_coord_type

MHO_TableContainer<double,MHO_AxisPack<MHO_Axis<string>,MHO_Axis<double>,MHO_Axis<int>>>

Tags

The meta-data tags (key:value pairs) that are commonly associated with objects of this type are as follows:

key

description

example value

name

the container name

station_data

X

station X coordinate

-5543831.705

Y

station Y coordinate

-2054585.983

Z

station Z coordinate

2387828.776

difx_station_code

the DiFX formatted 2-char station code

K2

model_interval

the time length of each polynomial model period (s)

120.0

model_start

the start time of the spline model (vex format)

2019y105d18h00m00s

mount

the station mount type

AZEL

nsplines

the number of spline intervals

2

station_code

The cannonical 2-char station code

K2

station_mk4id

the 1-char mark4 station ID

H

station_name

the full station name

KOKEE12M

Axes

This structure is a 3-dimensional dataset with labeled axes:

  • Axis 0 labels the type/name of the station model component.

  • Axis 1 corresponds to spline intervals (time/model epoch).

  • Axis 2 indexes the individual spline coefficients for each power.

Axis Index

Name

Units

Type

Description/Example

0

coordinate

N/A

MHO_Axis<string>

[“delay”, “azimuth”, “elevation”, “parallactic_angle”, “u”, “v”, “w”]

1

time

s

MHO_Axis<double>

start time offset of each spline period (0, 120.0,…)

2

polynomial_spline_index

N/A

MHO_Axis<int>

coefficient power 0, 1, 2,…