Calibration
Calibrating the TART telescope.
Antenna position calibration
This step is very important. The physical locations of the antennas with respect to a phase center must be known to within 1cm. This is because the phase of each signal will change by 360 degrees per wavelength (19cm) of path length difference. Therefore a phase accuracy of 1 degree would correspond to a position accuracy of 19/360 = 0.5mm! A more realistic 5mm error will correspond to 10 degrees of phase error.
The process of measuring antenna positions is called the site survey. The method for doing this is described here.
Using the tart_cal System
This is the original calibration.