Definition and test of the electromagnetic immunity of UAS for first responders

[摘要] Recent technological developments considerably lowered the barrier forunmanned aerial systems (UAS) to be employed in a variety of usagescenarios, comprising live video transmission from otherwise inaccessiblevantage points. As an example, in the French-German ANCHORS project severalUAS guided by swarm intelligence provide aerial views and environmental dataof a disaster site while deploying an ad-hoc communication network for firstresponders. Since being able to operate in harsh environmental conditions isa key feature, the immunity of the UAS against radio frequency (RF) exposurehas been studied. Conventional Electromagnetic Compatibility (EMC) appliedto commercial and industrial electronics is not sufficient since UAS areairborne and can as such move beyond the bounds within which RF exposure isusually limited by regulatory measures. Therefore, the EMC requirements havebeen complemented by a set of specific RF test frequencies and parameterswhere strong sources are expected to interfere in the example project testcase of an inland port environment. While no essential malfunctions could beobserved up to field strengths of 30 V m⁻¹, a sophisticated, more exhaustiveapproach for testing against potential sources of interference in keyscenarios of UAS usage should be derived from our present findings.

[学科分类] 电子、光学、磁材料