Development And Research On The Short Wave's Real-time Channel Estimaing System

This paper results from 'the Digital Anti-interference Transceiver',which is preliminary studied in 'the Ninth Five-Year Plan' and will be put into effect in 'the Tenth Five-Year Plan' by Headquarters of the general staff. The new generation of digital anti-interference transceiver mainly applies to the following digital businesses:Intermediate-Frequency (IF) digitize,Frequency-Hopped communication,data transmission,Link Quality Analysis (LQA),Automatic Link Establishment (ALE) and High-Frequency adaptation etc. It is compatible with the former transceiver. Meanwhile,on principle of modularization,standardization and serialization,it implements functional modularization,structural modularization,the interface between modules standardization,and fixed structure standardization. This is beneficial to its functional extension and equipment maintaining,and it is also convenient for software upgrade in future. This paper mainly fulfills realizing the Real Time Channel Estimate (RTCE) Technology of adaptive High-Frequency (HF),which is one of the digital businesses. That is,in order to obtain a satisfied communication quality,in every group of beforehand setting channel,by means of Link Quality Analysis (LQA) during two side's calling,answering and recognizing period,every channel will be arranged in prior order,the best communication channel can be found automatically,and the link can be set in the best frequency so as to raise the level anti-interference,and ensure our army's ability in fighting.