Take two cases: since the tsunami, Sri Lanka's largest telephone company has started an early-warning system which would send SMS messages to every mobile phone in an area at risk of flooding.
举两个事例：海啸发生以来，斯里兰卡最大的电话公司已经启动了一个预警系统，后者将向处于洪水泛滥危险区域内的每一部移动电话发送短消息。
This paper deduces the equation of jamming airborne early warning radar with multi-jammer, simulates the target exposed area that multi-system joint jammers jam the airborne early warning radar.
推导了多部干扰机干扰空中预警雷达的干扰方程，仿真了多系统联合干扰机载预警雷达时目标的暴露区。
It provide wide area surveillance with longer early warning time than other common radar.
它能够提供大范围的早期预警且预警时间远远超出一般雷达。
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