1970年至1990年由Nançay December Array在35 mm胶片卷上记录的数字化模拟光谱图
Digitizing analogic spectrograms recorded by the Nançay Decameter Array on 35 mm film rolls from 1970 to 1990
摘要：
南赛十月天线阵（NDA），现在已经超过40岁，每天在10到100 MHz的连续谱上获得木星和太阳低频无线电发射的观测结果，形成了这两个天体最大的LW无线电观测数据库。自1977年启用以来，它还间歇性地观测到强射电源。在此之前，在同一地点用一对安装在移动吊杆上的对数周期八木天线构成的干涉仪进行了十米波观测。这些观测是用一系列模拟记录器（1990年以前）和数字接收器（1990年以后）记录的，性能和灵敏度都在提高。NDA科学团队最近检索并清点了二十年（1970年至1990年）的模拟数据档案（35毫米胶片卷）。我们现在计划对这些观测数据进行存档，以恢复其科学价值，并将其纳入目前运行的数据库，数据库涵盖的时间跨度从1990年至今，每天仍在增加新的文件。这一现代化和可互操作的数据库具有虚拟观测台接口。这是促进科学数据利用的必要因素，包括长时间尺度的木星和太阳数据分析。我们介绍了这个项目的现状。
英文摘要：
The Nançay Decameter Array (NDA), which has now passed 40 years old, acquires daily observations of Jovian and Solar low frequency radio emissions over a continuous spectrum ranging from 10 up to 100MHz, forming the largest database of LW radio observations of these two bodies. It also intermittently observed intense radio sources since its opening in 1977. Before that date, decametric observations were conducted on the same site with an interferometer formed of a pair of log-periodic Yagi antennas mounted on mobile booms. These observations have been recorded with a series of analogic recorders (before 1990) and then digital receivers (after 1990), with increasing performances and sensitivities. The NDA scientific team recently retrieved and inventoried the archives of analogic data (35mm film rolls) covering two decades (1970 to 1990). We now plan to digitize those observations, in order to recover their scientific value and to include them into the currently operational database covering a time span starting in 1990 up to now, still adding new files every day. This modern and interoperable database has virtual observatory interfaces. It is a required element to foster scientific data exploitation, including Jovian and Solar data analysis over long timescales. We present the status of this project.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
