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This Report compares the strengths and weaknesses of time-difference-of-arrival (TDOA) versus angle-of-arrival (AOA) methods of signal geolocation.

Detection of all signal activity over an entire metropolitan area is not realistically achievable with any fixed geolocation or monitoring technology. Deploying a system that meets a majority of the needs with the flexibility to relocate and reconfigure when necessary is vital in today’s spectrum environment.

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