Propagation performance of ADS-B signal in tropospheric atmospheric duct
There is a special atmospheric structure,namely"atmospheric duct",in the troposphere atmospheric environment,which can cause over-the-horizon propagation or blind spots on radio wave propagation.At present,the atmospheric duct can be inverted and detected to a certain extent by radar and GNSS signals,but there are some shortcomings.ADS-B signal has the characteristics of wide ap-plication range,high signal density and high real-time performance.The correlation between ADS-B signal and tropospheric atmospheric environment was analyzed and studied by using the characteristics of different energy loss of ADS-B signal affected by different atmospheric environment.Taking the ADS-B signal data in Wuhan area as an example,the path loss was simulated and analyzed based on the parabolic equation propagation theory,and the experimental verification was carried out.The re-sults show that there is a linear correlation between the ADS-B received signal and the simulation re-sults and the linear expression is given,which provides a reference for the subsequent use of ADS-B signal to invert the atmospheric duct.
tropospheric atmospheric ductparabolic equationADS-B signalpropagation loss
万方数据
维普
