用微带阵列实现智能天线能够满足系统小型化、造价低的要求，这在现代通信中有着广泛地应用前景。
Microstrip antenna arrays can meet smart antenna's demands of miniaturization and low cost and will be used widely in modern communication systems.
系统结构简单、使用方便、造价低廉、便于维护，适合于实验教学应用。
It is simple in structure, convenient to operate, low cost, easy to maintain and suitable for experiment and teaching.
使用位置差分法将减少目标位置监测系统的造价，使目标用户设备简单、造价低，而且重量轻（因为在军事上对于目标携带设备的重量要求往往很苛刻）
This method will reduce the cost of target monitoring DGPS system, and simplify the target borne equipment to reduce the weight of the equipment.
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