A method and apparatus comprising a group of passive sensor systems, an active sensor system, and a processor unit. The group of passive sensor systems is configured to generate first sensor information from light in an environment around the group of passive sensor systems. The active sensor system is configured to send signals, receive responses from the signals, and generate second sensor information from the responses. The processor unit is configured to control the active sensor system to send the signals in a direction toward an object using the first sensor information and generate information about the object using the second sensor information.