基于外辐射源的多基一次雷达在低空布局研究

Research on low-altitude layout of multi-base primary radar based on external radiation source

在我国空管安全监视中,对于监视精度的把控至关重要。近年来“低慢小”飞行器引起的航空不安全事件逐渐增多,增加了空域监视的难度。为了加强对于空域的有序管理,提高对于“低慢小”航空器的监视需求,提出了一种采用外辐射源作为发射端,只建立接收站的监视方式,通过对接收站进行合理的布局,对低空空域的“低慢小”飞行器进行监控使监视精度满足机场起落航线附近的监视要求。通过对HDOP进行推导得到精度因子作为评价该监视方式能否达到监视精度的指标,并对不同数目、接收站故障和接收站不同高度下的情况进行仿真,仿真结果表明,4个地面站在不同情况下的精度均小于推导的HDOP,证明该监视方式可以满足民航对于机场附近低空空域监视精度的需要。

In my country′s air traffic control security surveillance,the control of surveillance accuracy is very important.In recent years,aviation unsafe incidents caused by"low,slow and small"aircraft have gradually increased,increasing the difficulty of airspace surveillance.In order to strengthen the orderly management of the airspace and increase the monitoring requirements for"low,slow and small"aircraft,a monitoring method is proposed that uses an external radiation source as the transmitter and only establishes a receiving station.The monitoring of"low,slow and small"aircraft in low-altitude airspace enables the monitoring accuracy to meet the monitoring requirements near the airport′s take-off and landing route.By deriving the HDOP,the precision factor is obtained as an index to evaluate whether the monitoring method can achieve the monitoring accuracy,and the simulation results are carried out for different numbers of receiving stations,failures of receiving stations and different heights of receiving stations.The accuracy in all cases is less than the derived HDOP,which proves that this monitoring method can meet the needs of civil aviation for the monitoring accuracy of low-altitude airspace near the airport.