Blind people can hear content of the special web page with sound navigation by using keyboard to control the browser.
盲人借助语音导航功能，通过键盘的上下左右键就能浏览特定网站的网页内容。
2
Radio altimeters measure the distance of an aircraft above the ground rather than above sea level, they are used in automatic navigation and Blind-landing systems.
无线电高度表测量的是飞机离地面而不是离海平面的距离，用于自动导航及仪表着陆系统上。
3
The blind adaptive beamforming algorithms using PN code are studied in this paper, based on the smart antenna anti-jaming application in satellite navigation and position system receiver.