Use guidance blocks to calculate distance between two vehicles, controller blocks to control the movement of vehicles, such as the vehicle path, location, and velocity, and the forces on the vehicle. Use navigation blocks to model accelerometers, gyroscopes, and inertial measurement units (IMU) on each of three axes; an IMU that contains one three-axis accelerometer and one three-axis gyroscope. Implement pilot crossover, precision, and Tustin models.