Optical Flow Sensor Designed for Altitude-Holding Flight

An optical flow sensor is fabricated by using an optical navigation sensor as its core chip. The design process is detailed and an optical flow testing platform is designed to test its performance and calibrate its basic parameters. Then the optical flow sensor is introduced to the altitude-holding control loop of a cruise missile and a hardware-in-loop simulation is demonstrated. The simulation result verifies the sensor’s effectiveness in the low-altitude penetration.