This report describes the design and implementation of a sensor-based proximity sensing system implemented to assist the camera-based system. The goal of the sensor-based system is to provide a potential alternative to the camera-based system, and also to compensate for any of the downsides of this system, such as relatively worse performance in low visibility conditions, gauging distances accurately and implementing a collision warning mechanism. This will be done through the use of ultrasonic sensors. The sensor considerations and sensor
network will be described in depth. Furthermore, analysis of numerous signal processing techniques will be performed. These techniques will differentiate objects based on their respective echoes, which allows for accurate mapping onto the user interface, once the locations of the objects have been obtained through 3D trilateration. The prototype implementation along with the system integration with the camera-based system will be discussed once all of the previous work is done. Afterwards, the results of the project will be discussed and the work will be concluded with some future recommendations.