Analysis of Orthorectification Accuracy of Pleiades and SPOT6 Images For Mapping Basic of RDTR Coastal Area (Case Study: District of Jenu, Tuban)

Abstract

The coastal area of Tuban Regency in various spatial plans is planned to be one of the economic growth centers in East Java. The plan requires a detailed Spatial Plan (RDTR) map, especially the Coastal Area with high accuracy. However, the current RDTR map still lacks high accuracy. Therefore, the purpose of this research is to analyze the accuracy of high-resolution satellite image orthorectification, so that it can be used for making RDTR base map. In this research, orthorectification process is done by using satellite image data of Pleiades 1A and SPOT6 with Rational Polynomial Coefficient (RPC) method. As a supporting data are Ground Control Point (GCP) of 11 points and Independent Check Point (ICP) of 12 points and DEM Astrium Terra SAR-X data for satellite image altitude correction so that the image is upright. Based on the processing and data analysis, the accuracy horizontal image of Upright Pleiades 1A is 0.25 meters and the SPOT6 Upright image is 1.8 meters. Based on the horizontal accuracy value, the satellite images of Pleiades 1A and SPOT6 meet the horizontal accuracy standard of the base map scale of 1: 5000 and 1: 10,000 in accordance with Perka BIG No. 15 the year 2014. In addition, this research also conducted the perturbation of TSS of Pleiades 1A satellite image and SPOT6 using Laili algorithm 2015. From the result of image processing and ground truth data can be said that TSS concentration is low (<100 mg / l) according to Permen LH Number 01 of 2010. Thus can be said that marine waters in District of Jenu classified as clean and it does not affect shoreline changes. The result of correlation test of image TSS of Pleiades 1A and SPOT6 with ground truth data is very strong while image data of Pleiades 1A and SPOT6 with aerial photography data have low and very low correlation coefficient.