Question

Design {block diagram level} a navigation system which can be used on the desert surfaceand also for operations 100 meters underground minee. The required position accuracy ib 10m on the .surface and 5m on the underground.Justify the choice of sencors with its detailed working principle and complete specifications for the mentioned scenario

Answer 1

Fig. 1. Block diagram of the GPS subsystem. Commands and navigation information are communicated between the on-board computer (OBC) and the GPS subsystem through TX/RX serial lines. BOOT SELECT and XRESET lines enable hardware-based firmware reprogramming in case the firmware on the GPS receiver needs to be updated. The GPS receiver provides the OBC with a pulse-per-second (PPS) signal which allows accurate clock synchronization. The OBC can also control an ON/OFF pin to shut down the GPS subsystem voltage regulator. The electrical power system (EPS) provides the sub- system’s voltage regulator with 3.3 volts. The GPS receiver provides the active GPS a n- tenna with a voltage bias and the antenna provides the receiver with GPS signals. All digital signals are at transistor-transistor logic (TTL) levels.

Go to publication

Download