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机载SAR中,天线稳定平台是为了消除载机飞行姿态变化对成像影响的关键设备。目前的天线稳定平台一般将陀螺仪安装在稳定平台上,由于受到高空低温、高湿和电机磁场等的干扰,稳定平台对其陀螺仪的工作精度和可靠性要求很高,对其防护要求也很高,增加了平台制造的难度和成本。本文提出将陀螺仪安装在载机内部,通过建立和分析陀螺仪矢量变换数学模型,能够正确获得稳定平台三轴上对应的角速度信号,并得到实验数据的证实。
In the airborne SAR, the antenna stabilization platform is the key equipment to eliminate the influence of flight attitude change on imaging. The current antenna stabilization platform generally gyroscope mounted on a stable platform, due to high altitude and low temperature, high humidity and motor magnetic field and other interference, the stability of the gyro platform for its accuracy and reliability of the demanding, and its protection requirements are High, increasing the difficulty and cost of platform manufacturing. In this paper, the gyroscope is installed inside the carrier. By establishing and analyzing the mathematical model of gyroscope vector transformation, the corresponding angular velocity signals on the three-axis of the stable platform can be obtained correctly and verified by experimental data.