ABSTRACT
The output power of a detection system, PR, is converted to a time-varying voltage, Vout, by running it through a square law detector, such that
V P Vout R R∝ ∝ ( ) 2
(8.1)
PROLOGUE
Whether it be from the ground, stratosphere, or space, observing time at THz frequencies is a precious commodity. An efficient observing strategy is needed to make the most of the available time. In the case of ground-based observations, large, timevarying atmospheric opacities can make data calibration particularly challenging. In this chapter, observational strategies and calibration techniques commonly used in millimeter-wave and THz astronomy will be discussed.
