4 million ha in 1991, 13% lower than the area under maize. Rice constituted about 16% of total crop production and 66% of total cereal production. SAR Land Applications - Bilko Exercise Rice in the Philippines Importance of rice Agriculture, including forestry and fisheries, contributed approximately 22% to total GDP of the Philippines in 1990. Classify the area based on the 4 ratio images and interpret the results.Create ratio images between images 1 and 2, and images 2 and 3 for both polarisations.Create and interpret a colour composite of the three HH images.Perform a speckle filter to each image.Extract the region of interest from the larger image.Convert the 1 look SLC data into 1 look Power image.At the end of the exercise you should be able to Note that the ASAR AP data have already been focused and provided in SLC format. Three ENVISAT ASAR AP (HH/HV) data (hence 6 images) have been acquired in an area, mainly covered by rice, in the Philippines on 13 November 2003, 18 December 2003, and 22 January 2004. The aim of this exercise is to map the rice fields at the different acquisition dates, and classify the area based on the emergence of rice from the rice paddies.
For each crop season it is important to know the rice cultivated areas, which strongly depend on the water availability. SAR Land Applications - Bilko Exercise Overview, aim and objectives The Philippines have 2 crop season per year: June-October and December-April. For advanced processing of SAR data users should consider other software packages discussed in chapter 6 of the "Background and Theory". However, it lacks some of the advanced 'black-box' algorithms of more specialist software, and does not provide the facility for automated processing. Its strength lies in its transparency, which makes students consider the effects of different processing steps on the reliability and validity of remote sensing products. Please note that the Bilko software is designed primarily for training purposes. You may also find it useful to refer to theoretical part of the tutorial when you carry out the practical work. 1 in particular provide necessary information for the successful completion of the exercise. We recommend that you read through the Background and Theory before starting this practical. Answers and Examples – model answers to questions from both parts of the tutorial, including screenshots of what the students may expect to see when working with Bilko. This Bilko Exercise – a computer practical using Bilko software with Enivsat-ASAR data, allowing students to apply theoretical knowledge to the processing and interpretation of actual SAR data. Background and Theory – an overview of the principles behind SAR remote sensing, data processing techniques, examples of land applications, and current and future sources of SAR data. SAR Land Applications - Bilko Exercise Introduction This SAR Land Applications Tutorial has three main components: I.
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