Abstract
While off-the-shelf radios exist which allow exploitation of cellular communications signals, their size, weight power and cost metrics are often prohibitive when four or more independently tunable channels are needed. To avoid these limitations as well as those imposed by monolithic driver architectures which require the controlling software to dictate the behavior of all channels simultaneously the authors undertook to design a smaller, lighter and lower cost SDR platform with an independently abstractable driver interface. This paper describes the motivations behind, design process used to arrive at and resulting implementation of a multi-channel Signal of Opportunity (SoOP) radio optimized for exploitation of 5G and 4G signals between 600 and 5800 MHz for synchronization and navigation purposes and its associated driver model which allows independent channel control while maintaining synchronization between channels, while physically fitting into a minimal size, weight, power and cost (SWAPC) envelope.