国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

Aiming at the problems that GPS cannot be used and INS status error diverges too fast due to signal loss in GNSS during military war, indoor and underwater, a visual aid navigation method based on continuous frame time difference was proposed. In order to restrain the rapid divergence of state errors and improve the performance of INS in long endurance work, the continuous frame difference method of machine vision was analyzed and improved in calculation. A time-difference vision/inertia combined system was designed and simulated. Results Compared with pure INS, RMSE reduced by 19.0% in the northbound position and 32.1% in the eastbound error, indicating that this method effectively inhibited the error divergence of pure inertial navigation speed and position, and extended the available time of inertial navigation.