A HIGH DATA RATE RECORDER FOR ASTRONOMY

被引：10

作者：

HINTEREGGER, HF ^{[1
]}

ROGERS, AEE ^{[1
]}

CAPPALLO, RJ ^{[1
]}

WEBBER, JC ^{[1
]}

PETRACHENKO, WT ^{[1
]}

ALLEN, H ^{[1
]}

机构：

[1] METRUM INFORMAT STORAGE,LITTLETON,CO 80122

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1991年 / 27卷 / 03期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

D O I：

10.1109/20.79088

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A magnetic tape recorder has been developed for the special requirements of radio astronomy and geodesy. These requirements include a high data rate, a high bit packing density, and long record times. The current version of this longitudinal recorder used by the very long baseline array (VLBA) records 5.5 Terabits on a 14-in diameter reel of inch-wide tape. A maximum record rate of 256 Mb/s is achieved in the VLBA configuration with one recorder operating at 4 ms and utilizing 32 of the heads in a single stack. Laboratory tests have been made at 1024 Mb/s with 4 headstacks, and we expect to be able to use this configuration for 2048 Mb/s operation at 8 m/s. A future version configured with the same number of new metal-in-gap (MIG) heads and metal evaporated (ME) tape should permit 4096 Mb/s at a doubled transition density of 4.5 fr/mu-m. Also, further reductions in trackwidth and tape thickness to less than 10 and 4-mu-m, respectively, are projected based on analysis of the tape path mechanics.

引用

页码：3455 / 3465

页数：11

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