Research on multi-channel receiving and decoding technology for mode S responding signal

In order to find a solution to the contradiction between the coverage area of a single antenna and operating range of a single antenna,and to achieve the goal of the broader airspace coverage and higher decoding rate,the method for receiving,decoding and integrated error correction of the mode S replies with multi-beam receivers is proposed.An experiment of receiving,decoding and integrated error correction is made by using of two-beam receiver,and three typical sets of decoded data are got.The paper makes a statistical analysis of these data,and the results show that method can not only cover broader airspace range to increase the amount of data,but also has a better integrated error correction capability in the area where two beams covered at the same time.