一种Ka频段双通道遥测设备的无杆标校方法研究

Ka频段双通道遥测设备的和、差通道存在相位差，并且随环境变化而变化，需要在基带终端通过校相才能实现相位差的校正，最终完成对目标的自主跟踪。在靶场中，以往都是通过架设标校杆进行基带校相，这种方法可以实现相位标校的目的，但是随着遥测设备作战领域已经向深海、高原等区域拓展，受到这些特殊位置环境等对架设标校杆的种种限制。本文重点研究了在高原环境下，不架设标杆校，通过偏馈天线发射信号，实现和、差通道相位零值标定的目的。本文给出了基于偏馈天线的无杆标校原理和方法，并通过实验验证了本文方法的有效性。

The Research on Rodless Calibration Method for Ka-band Dual Channel Telemetry Equipment

The sum and difference channels of Ka-band dual channel telemetry equipment have phase differences, which can vary with environmental changes. Phase correction is required at the baseband terminal to achieve phase difference correction and ultimately achieve autonomous tracking of the target. In the shooting range, baseband phase calibration was usually achieved by setting up calibration rods, which can achieve the purpose of phase calibration. However, with the expansion of telemetry equipment in the field of combat, it has expanded to areas such as deep sea and plateau. Due to the various limitations of these special location environments on setting up calibration rods, this article focuses on studying how to achieve the purpose of calibrating the phase zero value of the differential channel, without setting up calibration rods, transmit signals through biased antennas in plateau environments. This article presents the principle and method of rodless calibration based on biased antennas, and verifies the effectiveness of the proposed method through experiments.