ENVIRONMENTAL MONITORING USING LISAT (LAPAN-IPB SATELLITE) AND LANDSAT 8 SATELLITE IMAGERY OVER PATI REGENCY, CENTRAL JAVA, INDONESIA

摘要

ABSTRACT: The LAPAN-IPB Satellite called "LISAT" is designed and developed by LAP AN Indonesia. Not so many papers are addressing LISAT data application for environmental monitoring. Therefore, it is important to evaluate whether or not LISAT data can be used for environmental monitoring compared to LANDSAT 8 OLI/TIRS satellite imagery. The objectives of this research are (1) to compare LISAT and LANDSAT 8 Satellite by identifying the landuse (settlements and vegetation ar) through composite band images visually, (2) NDVI values from two different satellites over Pati Regency in specific time of study. The result showed similar spatial data view because the spatial resolution for both data were relatively similar (LISAT: 18 m; LANDSAT 8: 30 m). But LANDSAT 8 had more sharp image compared to LISAT. Moreover, LISAT image was not too focused (blur) compared to LANDSAT 8. However, the spatial data produced from LISAT was good enough as it is a new launched satellite, where LANDSAT is a well-known satellite. LISAT can be used for land monitoring because of its 30 m resolution images compared to others moderate resolution images. Nevertheless, NDVI data showed different range values between LISAT and LANDSAT 8. Value of NDVI derived from LISAT data was ranging between -1 to -0.006. while LANDSAT 8 was ranging -0.38 to 0.7. Minus value of NDVI derived from LISAT data was produced because LISAT data provided by LAP AN did not have absolute radiance values, only raw digital values. The next plan of this study is to normalized the digital number value and the information wiill be given from LAP AN.