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中文摘要：
为了提高动中通系统的跟踪性能，在对动中通系统特性分析的基础上，借鉴参数优化的思想和方法提出了一种基于同时扰动随机逼近的步进跟踪算法，算法的核心思想是利用高效的同时扰动技术对跟踪的梯度进行估计，而且算法仅利用带噪声的信号强度的测量值对梯度进行估计。该算法能够同时驱动天线波束在方位面和俯仰面以接收信号的最陡上升方向即梯度方向跟踪目标卫星。计算机模拟分析结果表明该算法不仅是有效的，而且具有较强的鲁棒性。
英文摘要：
In order to improve the tracking performance of SOTM,an improved step tracking algorithm based on simultaneous perturbation stochastic approximation is proposed by employing the idea of parameter optimization after analyzing the system characteristics of SOTM.The main idea for this novel tracking algorithm is to use a highly efficient simultaneous perturbation approximation to the gradient using only two noisy measurements of the received signal strength.The antenna beam can be steered to track the target satellite in both azimuth and elevation planes simultaneously in the direction of steepest ascent of received signal by using the improved step tracking algorithm.Computer simulation results show that this novel tracking algorithm is indeed effective and robust.
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