新型陆基无线电导航系统所需辐射功率计算

Computation of Radiant Power for the New Type Onshore Radio Navigation System

提出了采用类似于GPS的伪噪声相位编码信号体制,构成一个具有较高定位精度的新型陆基无线电导航系统,系统面临的主要新问题是必须采用地波传播方式,传播衰减大,而大气噪声又成为主要的干扰因素。就特定海域分析和计算了大气噪声的功率谱密度,同时计算了在保证较高测量精度条件下所需要的最低场强,继而给出了无线电导航系统所需辐射功率的计算方法。通过实例表明,构成一个工作距离为1000km的新型陆基无线电导航系统在技术上是可行的。

New type onshore radio navigation system has a high precision of location,introducing pseudo random phasic coding technique similar to GPS.The main problem of the system is the mode of onshore propagation and attenuation.Atmospheric radio noise is the most important interferential factor.Radiant power of atmospheric radio noise and electric field intensity is computed precisely for given maritime space,and then the computational way of radiant power is given.Example of 1000 kilometer in metrical distance in...