Title :
The signal flow error cube for polarimetric antenna and RCS measurements
Author :
Heidrich, E. ; Riegger, S. ; Wiesbeck, W.
Author_Institution :
Inst. fuer Hochstfrequenztech. und Elektron., Karlsruhe Univ., West Germany
Abstract :
It is demonstrated that signal flow graphs for circuits implying free-space transmission and polarization properties, as applicable to antenna and radar cross-section measurements, can be represented in a three-dimensional error cube. Although these graphs are rather complicated, they are a very useful tool for understanding the physical system behavior. In addition, mathematical formulations for error correction and calibration can easily be derived. High-level calibration techniques containing all systematic errors can advantageously be derived and also illustrated by means of signal flowcharts. Moreover, they clearly show the schematic of the system and the points of influence for errors such as spurious signals, reflections or coupling.<>
Keywords :
antennas; electromagnetic wave polarisation; graphs; radar cross-sections; radar measurement; RCS measurements; calibration; coupling; error correction; free-space transmission; mathematical formulations; polarimetric antenna measurement; polarization properties; radar cross-section measurements; reflections; signal flow error cube; signal flow graphs; signal flowcharts; spurious signals; three-dimensional error cube; Antenna measurements; Calibration; Circuits; Error correction; Flow graphs; Fluid flow measurement; Polarization; Radar antennas; Radar cross section; Transmitting antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.134878
