The author also makes some Suggestions for frequency selection of digital carrier and parameters selection of spectrum shaping filter.
对数字载波的频率及频谱成形滤波器的特性参数的选择提出了建议。
In tracking aspect, use carrier tracking loop based on Kalman filter to improve tracking performance.
在跟踪方面，采用了基于卡尔曼滤波的载波跟踪环来提高跟踪环的性能。
Porous ceramics may be used as high-temperature filter, catalytic carrier, porous electrode for fuel cell, and bioceramics, etc.
多孔陶瓷可用作高温过滤材料、催化剂载体、燃料电池的多孔电极、生物陶瓷等。
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