Method and apparatus for detection of radioactive material

A radioactive material detection system comprising:

• a plurality of radioactive material detection apparatuses arranged in or on an object to be tested, each apparatus comprising:
• a wireless transmitter capable of wirelessly transmitting information in correspondence with a signal;
• a radiation sensor having a sensor output, the radiation sensor being configured to detect radiation over a predetermined or commanded period of time;
• a detection controller configured to receive the sensor output from the radiation sensor and to send the signal to the wireless transmitter for transmission;
• and
• an identification tag electrically coupled to one of the controller and the wireless transmitter, the identification tag being configured to provide identification data or location data to the information being transmitted by the wireless transmitter;
• and
• a master unit/master module comprising:
• a receiver configured to receive the wirelessly transmitted information from each of the wireless transmitters of the plurality of radioactive material detection apparatuses;
• and
• a master controller coupled to the receiver,
• the system being configured to detect fissile or nuclear material that emits radiation within the object to be tested and to use location data from the plurality of radioactive material detection apparatuses to determine a location of the fissile or nuclear material within the object to be tested.