一种基于迭代计算的短波有效压制功率估计新方法

A New Method for Effective Blanket Power Estimation of Shortwave Propagation Based on Iterative Computation

短波压制式干扰设计中,基于链路损耗估算的有效压制功率估计误差大。针对此问题,提出了一种利用短波通信的自适应调制机制和自动重传请求机制,通过迭代干扰实现有效压制功率精确计算的方法。首先推导了有效压制功率和有效压制系数之间的线性关系,然后给出了针对自适应调整和自动重传请求的迭代干扰的算法原理,最后给出了半功率迭代计算的详细算法流程及计算机仿真结果。仿真结果表明,新算法靠有限次迭代干扰实现了有效压制功率的精确计算,相比传统的链路估算方法,能够快速地为干扰系统提供准确的发射功率值,将大大提高干扰效率和安全性。

Estimation of effective blanket power is an important work of shortwave sky wave jamming. In earlier works, the jamming power is obtained according to the worst loss of propagation, but the result may be much greater than what is practically needed. In this paper, an iterative jamming calculation method is present to esti- mate the effective blanket power in light of mechanism of adaptive modulation and automatie repeat request in shortwave . The relationship between effective balnket power and effective blanket coefficient is derived, then the principle of iterative jamming algorithm for adaptive adjustment and automatic repeat request is presented,finally the flowchart of half-power iterative computation algorithm and eomputer simulation results are given. The results show that the new algorithm realizes accurate computation of effective blanket power by using finite iteration,and can provide accurate transmitting power for jamming system rapidly compared with traditional link estimation algorithm, thus improving jamming efficiency and security greatly.