Passive radar listens to echoes bouncing off objects from existing TV, radio, satellite, or other broadcasts, so it requires no transmitter of its own. This means it needs no expensive hardware or broadcast license, making it suitable for distribution at scale. The most obvious use case is for tracking aircraft,
Below is a memorandum from law firm Thomsen and Burke LLP regarding the distribution of passive radar systems: Jurisdiction and Classification of Passive Radar Systems, Components, and Technology. Thank you to the ARDC Foundation for a generous grant to fund this work, and the Open Research Institute for advice along