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1.前言 ADS-B(Automatic Dependent Surveillance-Boadcast)是实现ADS功能的一种新概念。它通过全向广播机载GPS信息,实现定位信息的空/地或空/空传递,从而可以同时为多种用途的用户提供广泛的服务。近来美国航空无线电技术协会(RTCA)为ADS-B作了如下定义:“ADS-B是一种基于飞机的应用系统,它将飞机的经度、
1. Introduction ADS-B (Automatic Dependent Surveillance-Boadcast) is a new concept of ADS functionality. It broadcasts airborne GPS information omnidirectionally and enables air / ground or air / air transmission of positioning information to provide a wide range of services to users of multiple purposes at the same time. The American Society of Radiocommunications Technology (RTCA) has recently defined the ADS-B as follows: ”ADS-B is an aircraft-based application that combines the longitude,