摘要
高频表面波雷达对发射功率要求很高,通常会采取功率空间合成的办法使数个较小功率的发射机合成一个较大的合成发射功率。首先介绍了子天线输入信号的幅相不一致对阵方向图产生的影响,然后讨论了不同的自适应算法的优缺点,选定了一种合适的算法并给出了硬件框图。选定的自适应控制算法具有较好的收敛性和稳态失调性,计算量小,实现简单,通过单片机及其外围模数、数模转换电路能够很方便的实现功放的幅相校准系统,使功放的输出信号的相位、幅度满足要求。
The transmitting power that the high-frequency surface-wave radar required is very high, so the power space synthesizing method is usually used to make several transmitters with less power synthesize a higher transmitting power. This paper introduces the influence of the amplitude and phase inconsistency of input signal of the sub-antenna on the directional pattern of antenna array firstlY, then discusses the merits and demerits of different adaptive algorithms, and selects a kind of appropriate algorithm and gives out the block diagram of hardware. The selected adaptive control algorithm has better performances of convergence and steady-state maladjustment, the calculating quantity is less and the realization is simple. The amplitude and phase correcting system of the power amplifier can be expediently realized through the single-chip as well as its peripheral analog- to-digital conversion circuit and digital-to-analog conversion circuit,which can make the phase and amplitude of the output signal of the power amplifier satisfy the requirements.
出处
《舰船电子对抗》
2009年第3期47-50,共4页
Shipboard Electronic Countermeasure
关键词
功率合成
递推最小二乘算法
最小均方误差
power synthesis
recursion least squares algorithm
least mean square error
