Low-cost Ku band interferometer for educational purposes
2016
Latest discoveries in the field of astronomy have been associated to the development of extremely sophisticated
instruments. With regards to radio-astronomy, instrumentation has evolved to higher processing data rates and a
continuous performance improvement, in the analog and digital domain. Developing, maintaining, and using such kinds
of instruments – especially in radio-astronomy – requires understanding complex processes which involve plenty of
subtle details. The above has inspired the engineering and astronomical communities to design low-cost instruments,
which can be easily replicated by the non-specialist or highly skilled personnel who possess a basic technical
background. The final goal of this work is to provide the means to build an affordable tool for teaching radiometry
sciences. In order to take a step further this way, a design of a basic interferometer (two elements) is here below
introduced, intended to turn into a handy tool for learning the basic principles behind the interferometry technique and
radiometry sciences. One of the pedagogical experiences using this tool will be the measurement of the sun’s angular
diameter. Using these two Ku band receptors, we aim to capture the solar radiation in the 11-12GHz frequency range,
the power variations at the earth spin, with a proper phase-lock of the receptors will generate a cross-correlation power
oscillation where we can obtain an approximation of the angular sun’s diameter. Variables of interest in this calculation
are the declination of the sun (which depends on the capture date and location) and the relation between maximal and
minimal power within a fringe cycle.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
2
References
0
Citations
NaN
KQI