ADS-B signals reception: a Software Defined Radio approach

摘要

In Air Traffic Control, ADS-B (Automatic udDependent Surveillance - Broadcast) systems provide udsurveillance information as obtained by the cooperating udairplanes. This usage of air-derived data and of a common link udopens various issues: performance in dense traffic area, signals udvalidation and security. A Software Defined Radio (SDR) permits udthe needed flexibility and modularity in order to easily develop udprototypal devices for evaluation and test of novel enhancements udof ADS-B receivers. In this frame, a multi-channel receiver for ud1090 MHz ADS-B signals was implemented, using an array udantenna, a specific designed analog front-end and a software uddefined receiver. The device is useful to test signal processing udalgorithms and to analyse the channel traffic. The receiver is also udjointly used with another SDR device capable to generate 1090 udMHz traffic. With this configuration it is possible to generate udspecific traffic scenarios characterized by interferences from udmultiple sources and/or by jammer. This paper deals with the udhardware and set-up description, the presentation of the uddeveloped software receiver and its functions, and, finally, the udresults achieved using the system.