The factors which have influence over the null depth and zero point position of two basic microwave antenna difference beams are analyzed theoretically from the point of engineering application.
从工程应用的角度出发，在理论上分析了影响两种基本类型微波天线差波束的零值深度、零点位置等指标的因素。
It transforms the double-differential carrier observation equation using null space transformation so that it need not to resolve real-time three-dimensional position parameters.
对单个历元的双差载波相位观测方程进行零空间变换，避免了实时变化的三维位置参数求解；
Then, switch S1 to the "measure" position and adjust RT2 to null any voltage offset referred to the output voltage.
然后，转换S1到“测量”位置，并调整RT2到涉及输出电压的所有无效的电压偏置。
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