塔康导航系统机载中频信号数字化技术

现用的塔康设备以模拟体制为主,难与数据设备系统交连,因而有必要进行数字化改进,基于软件无线电思想中的中频信号数字化技术已被广泛应用到现代通信领域。由FPGA和DSP构成的硬件系统为先进数字信号处理技术的实用化、工程化提供了实现平台。首先分析了塔康导航信号特点,然后运用数字信号处理技术,结合大规模数字集成电路,在FPGA和DSP搭建的硬件平台上讨论并实现了塔康导航系统机载中频信号的数字化处理,所得结果证明,所采用的算法达到了塔康系统的性能要求,并且较之传统的模拟机载系统具有节省功耗、空间的优点。

Digital Implement Technology of TACAN IF Signal

Mainly consisted of simulating system,the present TACAN equipment is difficult to associate with the date equipment system and is necessary to make digital improvement.The digital technology of IF signal,which is on the basis of Software Radio,has been used broadly in the current communication field.The hardware system made up of FPGA and DSP is the implement platform of advanced digital signal processing technology used in the practical projects.First,the characteristics of TACAN signal are analyzed;Second,the IF signals are processed by using digital technology on the basis of a hardware system which is composed by FPGA and DSP.The result proves that this algorithm meets the performance demand of TACAN system.Compared with the conventional system,TACAN provides many benefits in the economization of power and space.