Challenges and Opportunities of Spectrum Coexistence for Passive Remote Sensing

The growing demand for radio frequency spectrum access motivates the development of efficient spectrum sharing approaches and techniques, especially those that try to coordinate the access to the electromagnetic medium to avoid interferences A general overview of cooperative spectrum sharing technologies is provided in this paper with particular focus on how they can improve the coexistence between passive remote sensing and active radio services. To that effect, some specific implementations are described. Finally, the challenges and opportunities that spectrum coexistence brings to remote sensing are identified and discussed from the point of view of engineers and scientists working in this field.