Abstract: The present invention relates to methods and systems for the remote monitoring and sensing of a remote deployable, stand-alone, environmentally aware surveillance sensor device or unit that is capable of self-determining its location and orientation relative to a real world, 3D environment, detect conditions or events within the sensor's range of detection within that environment, and provide event information indicative of detected conditions or events including their location relative to the 3D real world environment as well as the raw sensor data feed to an external utilization system such as a security monitoring system. The exemplary sensor unit obtains position information from a position information source, orientation information from an orientation information source and time information, thereafter the unit processes the sensor feed to detect objects and types of objects, and provides event information or information output to an external utilization system such as a security monitoring system.