該文介紹了基于磁盤(pán)陣列的合成孔徑雷達(dá)超高速原始回波數(shù)據(jù)記錄器的結(jié)構(gòu)組成、工作原理及性能特點(diǎn)，討論了兩種數(shù)據(jù)包的分配方案：基于先后順序的數(shù)據(jù)包分配方案和基于統(tǒng)計(jì)特性的動(dòng)態(tài)數(shù)據(jù)包分配方案，并指出了這兩種方案各自的優(yōu)缺點(diǎn)。最后，給出了兩種方案實(shí)現(xiàn)結(jié)果的性能參數(shù)對(duì)比表。
關(guān)鍵詞：SAR原始數(shù)據(jù)；高速數(shù)據(jù)記錄；磁盤(pán)陣列

Abstract: In this article, an ultra-high speed SAR raw data recorder based on disk array is introduced, including its construct, working principle, and main features. Two kinds of data packet allocating method are proposed: the sequential allocating method and a dynamic allocating method based on statistical characteristics of the recording ability of each disk, also, the advantages and disadvantages of each method are pointed out. The performance table of two methods is put forward at the end of this article.
Key words：SAR raw data; High speed data recording; Disk array