Mosaic Aerial orthophotograph of the Historical PNOA-Government of La Rioja, year 1977

Black and white aerial orthophotography, with a spatial resolution of 1 m/pixel, produced from the interministerial photogrammetric flight (1973-1986) by the PNOA Histórico-Gobierno de La Rioja in ECW and JPEG format. The geodetic reference system is ETRS89, UTM projection at spindle 30. Result of composing a mosaic with the orthophotos corresponding to each sheet 5000. The tile is accompanied by a metadata file (xml). The date of taking the orthophotos is the year 1977.该数据集为黑白航空正射影像，空间分辨率为1米/像素，由里奥哈自治区政府历史版国家航空正射摄影计划（PNOA Histórico-Gobierno de La Rioja）开展的部际摄影测量飞行（1973年-1986年）所生成，存储格式为ECW与JPEG。其大地参考基准为ETRS89，采用UTM投影30带。本数据集由各对应1:5000比例尺图幅的正射影像拼接镶嵌而成，每个影像瓦片均附带XML格式元数据文件。该批正射影像的拍摄年份为1977年。