A technique for receiving expanded scanning radiometer (S.R.) pictures

The modified versions of Improved TIR08 Operational Satellite Series ITOS-D (NOAA 2) and subsequent future satellites of U.S.A. shall hava Scanning Radiometer (S.R.) on board for direct read out of data both in the day as well as visible picture portion, which are infrared as well as visible picture portion, which are recorded said, to yield pictures of a width which is only one third of the AVCS pictures of ESSA-8 satellites. As these pictures of such narrow size are of only limited use to the forecasters, therefore a method has been developed to expand these pictures. It uses an APT recorder working at 48 r.p.m with double the normal speed of paper take and replacement of papar take and replacement of 3600-helix (full helix) wire by 1800-helix (half-helix) wire on the drum of the dimension recommended for normal reception of NOAA-2 pictures.