| 摘要: |
| 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。 |
| 关键词: 短波干扰 有效压制功率 自适应调制 自动重传请求 半功率 迭代计算 |
| DOI： |
|
| 基金项目:国家高技术研究发展计划（863计划）项目(2011AA7074117) |
|
| A new method for effective blanket power estimation of shortwave propagation based on iterative computation |
| YUAN Xiao-hua,LUO Wu-zhong,ZHENG Hui |
| (National Key Laboratory of Blind Signals Processing, Chengdu 610041, China) |
| Abstract: |
| Estimation of effective blanket power is an important work of shortwav
e 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 pr
esent to estimate the effective blanket power in light of mechanism of adaptive
modulation and automatic repeat request in shortwave communication.The relations
hip between effective balnket power and effective blanket coefficient is derived
,then the principle of iterative jamming algorithm for adaptive adjustment and a
utomatic repeat request is presented,finally the flowchart of halfpower iterat
i
ve computation algorithm and computer simulation results are given.The results s
how that the new algorithm realizes accurate computation of effective blan
ket 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. |
| Key words: shortwave jamming effective blanket power adaptive modulation automatic repeat
request half-power iterative calculation |
《电讯技术》编辑部 