ADS-B is also a relatively inexpensive technology.

并且ADS - B技术相对来说是成本较低的技术。

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With ADS-B, velocity changes are broadcast almost instantaneously as part of the State Vector report.

使用ADS - B技术速度变化传播信号作为状态向量报告一部分，几乎是一瞬间就能探测到。

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An ADS-B based system, on the other hand, would listen for position reports broadcast by the aircraft.

从另一方面来说基于ADS - B技术的系统会准确记录回复的飞行器位置传播信号报告。

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

BBC: The key to preventing lost planes

Meanwhile, the Federal Aviation Administration continues to spend hundreds of millions of dollars on ADS-B.

FORBES: Next-Gen Air Traffic Control Vulnerable To Hackers Spoofing Planes Out Of Thin Air

An FAA ADS-B security action plan identified and mitigated risks and monitors the progress of corrective action.

FORBES: Next-Gen Air Traffic Control Vulnerable To Hackers Spoofing Planes Out Of Thin Air