Line locator systems that fuse traditional sensors used in a combined pipe and cable locator (electromagnetic coils, magnetometers, and ground penetrating radar antennas) with low cost inertial sensors (accelerometers, gyroscopes) in a model-based approach are presented. Such systems can utilize inexpensive...http://www.google.ca/patents/US20060055584?utm_source=gb-gplus-sharePatent US20060055584 - Sensor fusion for model-based detection in pipe and cable locator systems
