Vision-based precision approach path indicator flight check method

Abstract

The invention discloses a vision-based precision approach path indicator flight check method, which belongs to the technical field of aviation flight check. A camera carried by a plane input an acquired video sequence into a computer in real time, and salient region detection is sequentially carried out on images of current frames. Midpoints of rectangular regions in the images of the current frames are sequentially found out as coordinates of stable light spots of each PAPI (precision approach path indicator) lamp at corresponding moments. The stable light spot at the later moment and the stable light spot at the previous moment are matched for the same PAPI lamp. The moment when each light spot turns from white to red is found out, and when a similar distance delta d is greater than a threshold value T2, the light spot is believed to turn from white to red. A curve of the change of delta d with time t is drawn, and color change moments tn of the four lamps are sequentially recorded.Plane positioning data at each change moment are acquired, and after the altitude of the plane and the horizontal distance between the plane and the lamps are obtained, elevations of the four PAPI lamps are calculated. The method increases the precision of flight check, the efficiency of flight check and the integrity of check.

Description

technical field [0001] The invention belongs to the technical field of aviation flight verification, and in particular relates to a vision-based precision approach indicator flight verification method. Background technique [0002] The Precision Approach Path Indicator (PAPI) is a navigation aid lighting system that provides the correct glide path for aircraft approaching and landing. It can provide pilots with correct glide path indication information and different deviation indication information during aircraft landing. The working principle is that the four PAPI lights face the approaching and landing aircraft at different angles. Using the principle of light refraction, when the aircraft descends along different glide slopes, the pilot observes that the colors of the four lights are different, thus providing the correct glide path Information and deviation indication information provide a reliable guarantee for the safe landing of the aircraft. [0003] The installati...

AI Technical Summary

Problems solved by technology

There are two major disadvantages: one is that the aircraft is dynamic, which requires a high response time for the calibrator, and manual operation may cause delays

Therefore, the current PAPI lamp calibration method is greatly affected by human factors, with low precision, complicated calibration process and low degree of automation.

Images