本文分析了机载雷达相位中心偏移天线(DPCA)系统的杂波相关矩阵，讨论了系统的最佳改善因数以及系统参数对性能的影响。

This paper presents analyses of the clutter correlation matrix, optimal improvement factor and effects of parameters of an airborne radar displaced phase center antenna (DPCA) system.

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可实现电机输入电源功率因数的改善，减轻其容量。

It can obtain the improve of power factor of the input motor power, and can lighten its capacity.

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这时投切电容予以补偿，改善功率因数，达到节能的目的。

Then the capacitance is put in or taken out to compensate, so as to improve the power factor, and reach the aim of energy—saving.

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