Spectrum-reuse by adaptive polarization separation

This paper presents the background of an Advanced Applications Flight Experiment being conducted for NASA. The objective of the study is to determine the feasibility of employing adaptive polarization separation in dual-orthogonal polarization systems to double the data capacity of a comunications link. This paper will discuss the system considerations involved in a dual-polarized link. Summarized here will be such considerations as the degree of polarization crosstalk which can be generated in the propagation paths, as well as the degree of polarization crosstalk that can be tolerated in a given system. Following the discussion of crosstalk generation, we shall describe the network philosophy envisioned to automatically and adoptively separate the polarizations to reduce the crosstalk to acceptable level.