%0 Journal Article
%T 基于速率增强JTIDS波形的干扰检测与擦除方法<br>Jamming detection and erasing method based on the rate-enhanced JTIDS waveform
%A 张彧
%A 吴钊
%A 宋健
%J 清华大学学报（自然科学版）
%D 2015
%X 联合战术信息分发系统(JTIDS)是一种应用广泛的态势感知数据链。为解决速率增强JTIDS波形在部分频带阻塞干扰下性能恶化的问题, 该文提出了一种低复杂度的干扰检测与擦除策略。首先对每个脉冲的信噪比(SNR)进行估计, 并对脉冲进行粗分类。接着, 估计出整个时隙内普通脉冲的平均SNR。最后, 对脉冲进行精细分类, 并依据一定的策略给每个脉冲赋予一个擦除因子。仿真表明: 该方法能极大减小部分频带阻塞干扰对解调性能的影响, 显著降低误码率。该方法复杂度低, 易于实现。<br>Abstract：Joint tactical information distribution system (JTIDS) is a kind of widely used situational awareness data-link. To solve the performance deterioration problem of the rate-enhanced JTIDS in the presence of partial-band barrage jamming, a low complexity method for interference detection and erasure is proposed. First of all, the signal-to-noise ratio (SNR) of each pulse is estimated and the pulse is classified roughly. Then, the average SNR of all the normal pulses in the time slot is estimated. Finally, a fine pulse classification is performed, and each pulse is given an erasure-factor in a certain strategy. Simulation shows that this method greatly eases the effects of the partial-band barrage jamming on the reception performance and significantly reduces the bit error rate. The method is low complexity and easy to implement.
%K 速率增强联合战术信息分发系统
%K 干扰检测
%K 擦除因子
%K 信噪比估计
%K &lt
%K br&gt
%K rate-enhanced joint tactical information distribution system (JTIDS)
%K interference detection
%K erasure factor
%K signal-to-noise ratio estimation
%U http://jst.tsinghuajournals.com/CN/Y2015/V55/I8/821#ReferenceTab