应答器传输模块抗干扰性量化及自动测试研究

为准确检测应答器传输模块(BTM)设备受外界干扰时的译码能力并提高整机测试的效率,使用虚拟仪器技术搭建BTM自动化测试平台,在进行BTM设备自动测试的同时增加抗干扰门限值的测定。利用自动测试平台分别将单频、调幅及高斯白噪声等多种类型的干扰信号自动与报文信号进行混合,按测试序列调整频偏及信号速率和信号功率,并能够实现通信环境模拟、测试结果自动判断等。研究结果表明,通过上述方法可以自动判断干扰信号对报文正常接收的影响程度,并可绘制BTM抗干扰性能门限图,将测试结果可视化呈现。该研究将为制定设备可靠性指标提供量化依据,为设备性能改进提供技术支撑。

Research on Quantifying Anti-interference Capability and Automatic Test of BTM

In order to accurately detect the decoding ability of Balise Transmission Module(BTM) equipment under external interference and improve the test efficiency of the complete machine, the virtual instrument technology is used to build BTM automatic test platform, and the anti-interference threshold value is added to the BTM automatic test. The automatic test platform is employed to mix various interference signals, such as single frequency, amplitude modulation and gaussian white noise, with message signals. The frequency deviation, signal rate and signal power are adjusted according to the test sequence. The communication environment simulation and the test result automatic judgment can be realized. The results show that the above methods can automatically determine the degree of influence of interference signals on the normal reception of message, draw BTM anti-interference performance threshold diagram and visualize test results. This study will provide quantitative basis for the establishment of equipment reliability index and technical support for the improvement of equipment performances.