Physical layer security for wireless sensing and joint radar and communications

Abstract

This chapter focuses on providing physical layer security (PLS) to the joint radar and communication (JRC) systems. The integration of sensing and communication via shared spectral, hardware, and signal processing framework provides energy and cost efficiency. However, the inclusion of information into radar probing signals makes the communication susceptible to eavesdropping from the potential radar targets thereby generating a tradeoff, where the JRC transmitter needs to direct sufficient power toward the target to illuminate it while simultaneously limiting useful signal power to prevent eavesdropping. In addition to that, critical sensing information gathered via various sensing techniques including radar systems must also be protected. Therefore, in this chapter, various attacks such as exploratory, manipulation and disruption attacks on wireless sensing are discussed along with the techniques to counter them. Moreover, certain algorithms and PLS techniques are described for the realization of secure joint radar and communication systems.