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在航天测控系统中,校相是日常设备维护必不可少的手段之一。通常情况下,校相的相位修正值是运用软件无线电的方法计算而得。矢量电压表是一种能同时测量信号幅度和相位的仪器,具有精度高、频带宽、灵敏度高的特点。利用矢量电压表测量和差通道相位差,计算出相位修正值,在硬件设备上实现了相位快速校准。该技术已在工程中成功实现。
In the space flight measurement and control system, the appearance of the faculty is one of the essential tools for routine equipment maintenance. Normally, the phase correction of the calibration phase is calculated using the software radio method. Vector voltmeter is a kind of instrument that can measure signal amplitude and phase at the same time. It has the characteristics of high precision, wide frequency band and high sensitivity. The phase correction value is calculated by vector voltmeter measurement and phase difference of the differential channel, and the phase fast calibration is implemented on the hardware device. This technology has been successfully implemented in the project.