Head posture recognition method based on data fusion

Abstract

The invention discloses a head posture recognition method based on data fusion. The method comprises the steps of firstly, collecting a precise head X-axis rotation angle and a precise head Y-axis rotation angle during the head rotation process; acquiring a Z-axis rotation angle during the head rotation process, wherein the Z-axis rotation angle comprises a gyroscope Z-axis rotation angle and an infrared feature point Z-axis rotation angle, and the gyroscope Z-axis rotation angle and the infrared feature point Z-axis rotation angle are used as the input quantities of a data fusion algorithm; obtaining the accurate head Z-axis rotation angle through data fusion, and finally outputting the head posture parameters composed of the accurate head X-axis rotation angle, the accurate head Y-axis rotation angle and the accurate head Z-axis rotation angle. According to the method, the measurement cost is low, the drift distance of the measurement result of a gyroscope can be corrected by adopting the infrared scanning measurement result through the fusion algorithm, and the purpose of high-precision measurement is achieved on the basis of keeping the original advantages of the two measurement methods.

Description

technical field [0001] The invention relates to the technical field of flight system simulation and space positioning, in particular to a head posture recognition method based on data fusion. Background technique [0002] Most modern fighter jets are equipped with a helmet-mounted aiming system, which allows the pilot to control weapon aiming and radar scanning by turning his head. Before the pilot formally trains on the real machine, he must undergo strict helmet aiming training in the flight simulator. Due to the complex functions and high cost of the real machine helmet aiming system, in the flight simulator, if the pilot wants to turn his head To control functions such as weapon aiming and radar scanning, it is necessary to develop a low-cost helmet aiming system simulation device, in which the core device is the head rotation angle measurement device. [0003] At present, there are two commonly used head rotation angle measurement devices, one is to measure the head ro...

AI Technical Summary

Problems solved by technology

The former can measure the head rotation angle and has a large measurement range, but the data has drift, and the longer the use time is, the greater the drift will be; the latter can also measure the head rotation angle, and the measurement results are highly accurate, but in the case of only one infrared scanner Lower measurable range is small

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