Based on analysis of car anti-collision system technology, radar system selection is described.

在分析汽车防撞系统技术的基础上，阐述了毫米波汽车防撞雷达的体制选择问题。

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But like radar technology, ADS-B currently relies on ground stations to relay information, making it useless over remote areas.

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The latest version has new sensor capabilities, employing Multi-Platform Radar Technology for improved surveillance .

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That said, the event occurred a century ago when the high seas lacked advanced radio and radar technology.

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