Human Health Aspects of Radar Operation

The exponential deployment of radar technologies, particularly in automotive applications, has led to increased human exposure to pulsed radiofrequency electromagnetic fields (pRF-EMF). While such technologies are essential for advancements in communication, safety, and automation, they raise critical concerns about the potential health risks posed by electromagnetic fields, particularly their non-thermal effects. Recent studies demonstrate that red blood cells (RBCs) circulating in the human body's vascular system may be particularly vulnerable to these exposures, given that they traverse regions where pRF-EMF is absorbed. This interaction can lead to alterations in RBC properties, including changes in deformability, aggregability, and membrane integrity. Such changes could have significant downstream effects on deeper organs and tissues.

This lecture explores the mechanisms through which pRF-EMF interacts with RBCs, with a focus on radar frequencies of 24, 60, and 77 GHz. It will present findings on how specific parameters such as power, modulation, and duration of exposure contribute to these effects. The lecture will also highlight methodologies for assessing the impact of electromagnetic exposure on human health, addressing both the current gaps in research and the challenges in establishing clear regulatory standards. Furthermore, the implications for future radar technology designs, which balance technological benefits and public health considerations, will be discussed.

This overview aims to deepen the understanding of how radar systems may impact human health, emphasizing the need for systematic investigation into non-thermal biological effects and paving the way for evidence-based guidelines on safe radar operation in public environments.