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Local area multilateration (LAM) systems installed at airports suffer from multipath propagation caused by reflections from objects such as buildings, hangars, masts or shelters. Receiving multiple overlapped signals from different radio propagation channels deteriorates the time of arrival (TOA) estimation. In this paper the edge detection algorithm is used to estimate the TOA of 1,090 MHz Mode S...
In this article the first complete 1,090 MHz SSR receiving and precision time of arrival (TOA) estimation station field programmable gate array (FPGA) implementation and its analog electronic front-end is presented. The station is designed for local area multilateration (LAM), wide area multilateration (WAM) and automatic dependent surveillance-broadcast (ADS-B) systems. Furthermore it's fully international...
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