关键词: 基于位置的服务, 地理定位, 经纬度, 代理服务器, 浏览器

Abstract: Geolocation function is an indispensable function in location based service. With the establishment of HTML5 specification, the main browsers support geolocation functions natively. This paper researches on the geolocation mechanism adopted on the main browsers, analyzes the query request and query response in detail. Then it pointes out the shortcoming of the current geolocation mechanism, which doesn’t allow users to choose the third-party geolocation server. This paper puts forward a method to give the users choice to select geolocation server according to the accuracy.
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Key words: LBS, geolocation, latitude and longitude, proxy, browser