Abstract: A ruggedized canister system having a cylindrical housing and a modular electronic rack system disposed therein. The modular electronic rack system includes a backplane and a plurality of rib members radiating outwardly from the backplane. The rib members extend from the backplane at a proximal end in a direction generally orthogonal to the longitudinal axis of the backplane toward a distal end. An input/output device extends along at least a portion of the backplane and includes a power input and a signal output electrically coupled thereto. A plurality of electronic slots are positioned within a space define by the rib members when viewed in plan view. Each of the electronic slots is configured to physically and operably receive an electronic card. Each of the electronic slots is electrically connected to the input/output device for electrical communication between the electronic card and the input/output device.