Judul: Pendugaan Hubungan Kondisi Topografi dengan Radiasi Spektral Citra Satelit TERRA MODIS L1B (Studi Kasus: Gunung Gede dan Gunung Salak)
Abstrak: The objectives of this research are estimate the spectral radiation relationship with the topography on forest land cover and analyze the relationship of surface temperature between altitude on forest land cover in the area of Mount Salak and Mount Gede derived from MODIS TERRA L1B imagery at long wavelength channel (spectral radiation emission ). Surface temperature derived from TERRA MODIS L1B data, it use channel 31 and 32 with a wavelength of 10.780 to 11.280 and 11.770-12.270 . Spectral emission of radiation (longwave thermal) response topography indicated by the correlation coefficient of -0.5 to -0.9 while the spectral reflectance of radiation (short wave) did not respond to the topography shown by fluctuations in the value of the correlation coefficient with a range of -0.7 to 0.3. TERRA MODIS L1B image data indicated by the response to topography radiation emission spectral response of the altitude. Based on data derived from MODIS TERRA L1B image is obtained inversely proportional relationship between the temperature of the surface topography. Highest value of surface temperature and the lowest occurred in September and May. With the same land cover (forest), solar zenith angle affects the surface temperature value. In addition, there are many other factors that affect the surface temperature, some of which are atmospheric effects (emission and scattering), the latitude and air density. MODIS sensor can respond to topography due to the influence of the moist air density and specific heat of air varies with altitude and pressure.
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Judul: Pendugaan Nilai Suhu Permukaan Berdasarkan Data Terra-MODIS L1B dan SRTM 90m
Abstrak: Land Surface Temperature (LST) is one of the best indicators of the energy balance at the earth's surface and a key parameter in the physics of land surface processes that combine the interaction between long wave energy flux at the surface and in the atmosphere. Several methods for determining the value of LST with remote sensing data have been widely developed one of which is the use of Terra-MODIS satellite. MODIS has a mission to monitor the phenomenon on the surface and the atmosphere so that users can find information changes that occur in near-realtime. The purpose of this study is develop methods and algorithms using satellite remote sensing Terra-MODIS data for prediction and mapping LST and determine the relationship of surface temperature derived from Terra-MODIS satellite data with surface topography and land cover. LST determination was done by using the split window algorithm by including the main factors such as emissivity and brightness temperature. The results showed that average of the highest LST that the Vidal algorithm. The relationship between LST and altitude be obtained average of the highest R2 is in June/July whereas the lowest is in September/October. Further, the relationship between LST and land cover be obtained average of the highest LST value is on open land and built land whereas average of the lowest value is forest land. Solar zenith angle is greatly affect sensor accuracy to determination LST value
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Judul: Desain Mekanisme Pengatur Bibit Nanas untuk Mesin Tanam Nanas.
Abstrak: Penanaman bibit nanas pada saat ini masih dilakukan secara manual dengan kapasitas rendah dan hasil penanaman yang kurang baik. Untuk memperbaiki hal itu, diperlukan mesin tanam nanas berkapasitas tinggi dengan hasil penanaman yang baik. Dalam mesin tanam nanas di mana bibit tertumpuk dengan posisi yang tidak beraturan, diperlukan mekanisme untuk mengatur posisi orientasi bibit nanas dan juga mengumpankan bibit nanas dalam posisi berdiri untuk ditanam. Tujuan dari penelitian ini adalah untuk merancang mekanisme pengatur bibit nanas tipe sucker untuk mesin tanam nanas. Mekanisme yang dirancang ini terdiri dari: 1) mekanisme pembawa bibit dari hoper bibit sekaligus memposisikannya secara tertidur satu persatu, dan 2) mekanisme pengumpan bibit dalam posisi berdiri. Mekanisme ini dirancang untuk dapat mengumpankan bibit dengan kecepatan 5.54 detik per bibit, dan unit conveyor pengarah bibit dirancang dengan kecepatan 0.081 m/s. Hasil pengujian prototipe mekanisme pengarah bibit ini menunjukkan bahwa conveyor pengarah bibit mampu membawa bibit, dan mengaturnya dalam posisi tertidur sebanyak 89.67 %. Unit penegak bibit dapat mengumpankan bibit dalam posisi berdiri sebanyak 92%. Mekanisme pengarah ini mampu mengumpankan bibit dengan kecepatan rata-rata 10.8 bibit per menit.
Keyword: Bibit nanas, conveyor, desain, mekanisme pengatur, mesin tanam