星载三极子天线电磁波参数最佳估计算法
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摘要
星载探测对仪器重量和体积的要求都很苛刻,而通常三极子天线需要一部三通道接收机以实现电磁波参数估计,不但重量和体积较大,而且存在通道串扰和增益不平衡的问题。该文提出两种基于时分技术的三极子天线估计电磁波参数的算法,使得一个三极子天线只需要一部单通道接收机,不但减小接收机的体积、降低接收机的重量和费用,而且克服了通道串扰和增益不平衡的问题。仿真结果证明了算法的有效性。
It is well-known that restricts on weight and volume of spaceborne sensing instruments are strict. Single tripole antenna usually needs one three-channel receiver to estimate the parameters of electromagnetic waves. When the weight of the receiver is high and the volume is big, channel garbling and gain imbalance exist. This paper puts forward two algorithms based on Time Division(TD) method with tripole antenna for parameter estimation of electromagnetic waves. The two methods make it possible that a single tripole antenna needs only a one-channel receiver, which not only decreases the volume and weight of the receiver, but also reduces the cost and overcome channel garbling and gain imbalance. The simulations prove the validity of the proposed algorithms.
引文
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