一种提高SFV测试准确度的通用编码调制设计

摘要

In order to solve the requirements for quality and diversity of code signal in testing all kinds of seekers, this paper presents a general design method based on arbitrary waveform generator for realizing the guidance signal source with coded modulation signal.The general idea of this method is shown as follows: firstly, MATLAB was used to establish a mathematical model of radio revision directive and carry out simulation;then it was loaded to arbitrary waveform generator with high performance;finally, LabVIEW interface control mode was applied to realize coded modulation.Before a test for other models, simulation and loading can be conducted again as required.In the paper, a complex radio revision directive was taken as an example to introduce actualization process.The new method improved phase noise and spurious indices of the signal source of seeker, increased the test accuracy of the sub feedthrough visibility(SFV) of seeker, and in addition, many models were verified by test.%为了解决在各种型号导引头测试时对编码信号品质和多样性的要求,提出了一种基于任意波形发生器的通用设计方法,用以实现携带编码调制信号的制导信号源.这种方法的大致思路是预先用MATLAB建立无线电修正指令的数学模型并进行仿真,并加载到高性能的任意波形发生器中,最后采用LabVIEW界面控制的方式实现了编码调制.在其他型号测试前,可以根据需要重新仿真和加载.以某种复杂无线电修正指令为例,阐述了实现步骤.新方法优化了导引头信号源的相位噪声和杂散指标,提高了导引头泄漏下能见度(SFV)测试准确度,并通过了多个型号的试验验证.