scholarly journals A TWO-STEPS RADIOMETRIC CORRECTION OF SPOT-4 MULTISPECTRAL AND MULTITEMPORAL FOR SEAMLESS MOSAIC IN CENTRAL KALIMANTAN

2017 ◽  
Vol 11 (2) ◽  
pp. 97
Author(s):  
. Kustiyo ◽  
Ratih Dewanti ◽  
Inggit Lolita Sari
Keyword(s):  
Standard Deviation ◽  
Linear Function ◽  
Correction Method ◽  
Band 3 ◽  
Forest Area ◽  
Viewing Angle ◽  
Radiometric Correction ◽  
Central Kalimantan ◽  
Digital Number ◽  
Offset Coefficient

This research analyzed the radiometric correction method using SPOT-4 imageries to produce the same reflectance for the same land cover. Top of Atmosphere (TOA) method was applied in previous radiometric correction approach, this TOA approach was upgraded with the reflectance effect from difference satellite viewing angle. The 250 scene of Central Kalimantan SPOT-4 imageries from 2006 until 2012 with varies viewing angle was used. This research applied two-step approaches, the first step is TOA correction, and the second step is normalization using a linear function of reflectance and satellite viewing angle. Gain and offset coefficient of this linear function was calculated using an iterative approach to producing the same reflectance in the forest area. The target of iterative processed is to minimize the standard deviation of a digital number from a forest area in the selected region. The result shows that the standard deviation of a digital number from a forest area in the two steps approach are 8.6, 16.5, and 16.8 for band 1, band 3 and band 4. These values are smaller compared with the standard deviation of digital number result from TOA approach are 15.0, 28,3 and 34.7 for band 1, band 3 and band 4.  Decreasing the standard deviation shows the homogeneity of forest reflectance that could be seen in the seamless result. This algorithm can be applied for making seamless SPOT-4 mosaic whole of Indonesia.

scholarly journals KEANEKARAGAMAN JENIS TUMBUHAN PAKU (PTERIDOPHYTA) DI KAWASAN HUTAN TUMBANG MANGGU, KECAMATAN SANAMAN MANTIKEI, KABUPATEN KATINGAN, KALIMANTAN TENGAH

EKOLOGIA ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 1-13
Author(s):  
Sri Hartini
Keyword(s):  
Local Communities ◽  
Forest Area ◽  
Central Kalimantan ◽  
Number Of Species ◽  
Asplenium Nidus ◽  
Almost All ◽  
Helminthostachys Zeylanica ◽  
Dicranopteris Linearis

Research on the diversity of ferns in the forests of Tumbang Manggu, Sub-district Sanaman Mantikei, Central Kalimantan, has been done. The study was conducted in March – April 2016  by using explorative methods. The results show, at least 28 species of ferns were found in the forest area, of which 16 species are terrestrial ferns and 12 species of epiphytic ferns. These species are included in 22 genera and 14 families. Huperzia and Pyrrosia are most abundant, each genus were consists of 3 species. The most rich families in term number of species are Polypodiaceae and Lycopodiaceae, with 6 species and 4 species respectively. Abundance of each species in the region was different, Blechnum orientale L., Dicranopteris linearis (Burm. f.) Underw., Lycopodiella cernua (L.) Pic. Serm., and Vittaria scolopendrina (Bory) Schkuhr ex Thwaites were found in large quantities and spread almost all over the region. Asplenium nidus L., Drynaria quercifolia (L.) J. Sm., Stenochlaena palustris (Burm. f.) Bedd., Lygodium circinatum (Burm. f.) Sw., Pyrrosia lanceolata (L.) Farw., Nephrolepis falcata (Cav.) C. Chr. and Vittaria ensiformis Sw. were found in considerable numbers. Asplenium pellucidum Lam., Athyrium bantamense Milde, Helminthostachys zeylanica (L.) Hook. and Tectaria crenata Cav. were found in small quantities and only in certain places. Local communities around the region have not much utilizing the ferns yet.

Non-Uniformity Correction Method Based on Standard Deviation Value Compensation after Moment Matching

2013 ◽  
Vol 33 (12) ◽  
pp. 1211002
Author(s):  
祝善友 Zhu Shanyou ◽  
张桂欣 Zhang Guixin ◽  
巩彩兰 Gong Cailan ◽  
祝令亚 Zhu Lingya ◽  
赫华颖 He Huaying ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Correction Method ◽  
Moment Matching

scholarly journals Konflik Tata Ruang Kehutanan Dengan Tata Ruang Wilayah (Studi Kasus Penggunaan Kawasan Hutan Tidak Prosedural Untuk Perkebunan Sawit Provinsi Kalimantan Tengah)

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Eko N Setiawan ◽  
Ahmad Maryudi ◽  
Ris H Purwanto ◽  
Gabriel Lele
Keyword(s):  
Land Use ◽  
Oil Palm ◽  
Spatial Planning ◽  
Forest Area ◽  
Forest Conversion ◽  
Spatial Integration ◽  
Central Kalimantan ◽  
Government Administration ◽  
The Government ◽  
Spatial Plan

AbstractLaw No. 26 Year 2007 on Spatial Planning (UUPR) mandated that all levels of government administration, ranging from the national, provincial, district/ city are obligated to prepare Spatial Plan (RTR). Until 2012, Central Kalimantan is one of the provinces which have not completed its Spatial Plan; one of the reasons was the lack of spatial integration of forestry spatial planning and provincial spatial planning of Central Kalimantan.The absence of spatial integration of forestry and provincial spatial planning of Central Kalimantan has the implication in triggering conflicts of land use. Forest areas were converted into oil palm plantations without any official procedures. There are 282 units of oil palm companies, occupying 3.9 millions hectares of forest area, with non-procedural procedures to convert forest area into oil palm plantation.To resolve this problem, the Government has revised the regulation of forest conversion by issuing PP No. 60/2012, provides opportunities for oil palm plantations, which under the Law of Forestry located in forest area but based on RTRWP of Central Kalimantan lies on APL or cultivation area, given the opportunity to re-apply the permit/license.  IntisariUndang- Undang No. 26 Tahun 2007 tentang Penataan Ruang (UUPR) mengamanatkan bahwa semua tingkatan administrasi pemerintahan, mulai dari nasional, provinsi, kabupaten/kota diwajibkan menyusun Rencana Tata Ruang (RTR). Kalimantan Tengah sampai dengan tahun 2012 merupakan salah satu Provinsi yang belum menyelesaikan Tata Ruang, salah satu penyebabnya karena belum adanya padu serasi antara tata ruang kehutanan dengan tata ruang Provinsi Kalimantan Tengah.Implikasi dari tidak adanya padu serasi antara tata ruang kehutanan dengan tata ruang provinsi Kalimantan Tengah adalah terjadinya konflik dalam penggunaan ruang, dimana terjadi penggunaan kawasan hutan tidak prosedural untuk perkebunan sawit di dalam kawasan hutan di Provinsi Kalimantan Tengah sebanyak 282 unit perusahaan sawit seluas 3,9 juta hektar.Upaya penyelesaian permasalahan penggunaan kawasan hutan untuk perkebunan sawit di Provinsi Kalimantan Tengah diakukan dengan revisi kebijakan tentang alih fungsi hutan PP nomor 60 tahun 2012 yang memberikan kesempatan bagi perkebunan sawit yang berdasarkan Undang-Undang Kehutanan berada di dalam kawasan hutan namun berdasarkan RTRWP Provinsi Kalimantan Tengah berada di kawasan APL maupun budidaya, diberikan kesempatan untuk mengurus perijinannya.

Research on Real-Time Laser Range Finding System

2013 ◽  
Vol 347-350 ◽  
pp. 1053-1058
Author(s):  
Fang Xiu Jia ◽  
Ji Yan Yu ◽  
Zhen Liang Ding ◽  
Feng Yuan
Keyword(s):  
Standard Deviation ◽  
Real Time ◽  
Amplitude Spectrum ◽  
Correction Method ◽  
Laser Range Finder ◽  
Range Finder ◽  
Measurement Standard ◽  
Laser Range ◽  
Frequency Correction ◽  
Better Than

Phase shift laser range finder, as a large-scale, high-precision measurement method, is widely used in industrial and military fields. The traditional laser range finder can not meet the need of real-time, high resolution measurement because of its low anti-jamming capability and time-consuming measurement. Owing to this, multi-channel transmitting and receiving system for phase shift laser range finder based on parallel DSP was designed. Multi-frequency modulation laser can be transmitted and received at the same time, improving the measurement speed and avoiding the wrong data fusion because of target moving. The distance was got by measuring the phase difference between the measurement signal and reference signal, and the Doppler velocity of the target is got by measuring the measurement signals frequency, The measurement signals reference signals were acquired by parallel AD convertors, the phase difference between them was calculated adopting all-phase FFT(apFFT). A new frequency correction method was proposed according to the amplitude spectrum acquired by apFFT, Amplitude spectrum is expanded into Taylor series and the correction value of frequency is calculated by relationship of spectrum lines. Monte Carlo simulation results proved that the new frequency correction method had higher resolution and better stability than Rife method and centro-baric method. The experiments is implemented on a precision guide of 3m-long, on the condition that the sampling frequency of AD converter is 937.5KHz, the apFFT transform point number is 4096, distance and velocity results can be obtained each 10ms, experiments prove that the distance measurement standard deviation better than 0.09mm and the velocity measurement standard deviation better than 0.022m/s are obtained. The system can meet the need of high accuracy ,real-time distance measurement of moving target.

scholarly journals A Practical Pyrgeometer Using the Representative Angle

2009 ◽  
Vol 26 (3) ◽  
pp. 647-655 ◽  
Author(s):  
Satoshi Sakai ◽  
Aya Ito ◽  
Kazuhiro Umetani ◽  
Isao Iizawa ◽  
Masanori Onishi
Keyword(s):  
Standard Deviation ◽  
Correlation Coefficient ◽  
Spectral Sensitivity ◽  
Zenith Angle ◽  
Street Canyon ◽  
Correction Method ◽  
Directional Response ◽  
Household Appliances ◽  
Spectral Correction ◽  
New System

Abstract A simple directional pyrgeometer is tested and compared with a conventional standard pyrgeometer. The system presented in this article has a narrow directional response and points to the representative zenith angle of 52.5°. Because of its directional response, it can be used in a street canyon or in a forest provided that a small part of the sky is visible at the representative angle. The system can be assembled using inexpensive parts that are widely used in household appliances. As this system does not have a flat spectral sensitivity, a spectral correction method is also presented. The results show that the output of the new system agrees well with that from a conventional pyrgeometer (Kipp & Zonen CG3). The correlation coefficient is 0.995 and the standard deviation is 5.6 W m−2 for 1-h averaged values.

scholarly journals NOAA-AVHRR Orbital Drift Correction: Validating Methods Using MSG-SEVIRI Data as a Benchmark Dataset

2021 ◽  
Vol 13 (5) ◽  
pp. 925
Author(s):  
Yves Julien ◽  
José A. Sobrino
Keyword(s):  
Time Series ◽  
Standard Deviation ◽  
Land Surface ◽  
Correction Method ◽  
Drift Correction ◽  
Noaa Avhrr ◽  
Coarse Spatial Resolution ◽  
Orbital Drift ◽  
Better Than

National Oceanic and Atmospheric Administration–Advanced Very High Resolution Radiometer (NOAA-AVHRR) data provides the possibility to build the longest Land Surface Temperature (LST) dataset to date, starting in 1981 up to the present. However, due to the orbital drift of the NOAA platforms, no LST dataset is available before 2000 and the arrival of newer platforms. Although numerous methods have been developed to correct this orbital drift effect on the LST, a lack of validation has prevented their application. This is the gap we bridge here by using the 15 min temporal resolution of Meteosat Second Generation–Spinning Enhanced Visible and Infra-Red Imager (MSG-SEVIRI) data to simulate drifted and reference LST time series. We then use these time series to validate an orbital drift correction method based on solar zenith angle (SZA) anomalies that we presented in a previous work (C1), as well as two variations of this approach (C0 and C2). Our results show that the C0 method performs better than the two others, although its overall bias absolute value ranges up to 1 K, while standard deviation values remain around 3 K. This is verified for most land covers, for all NOAA platforms, and these statistics remain mostly stable with noise on SZA time series (from 0° to ±10°). With this study, we show that orbital drift correction methods can be thoroughly validated and that such validation should aim toward bias absolute values below 0.1 K and standard deviation values around 1.4 K at coarse spatial resolution. To validate other orbital drift correction approaches, the drifted and reference time series used in this work are freely available for download from the first author’s webpage. This will be the first step toward the building of an orbital-drift-corrected long-term LST dataset.

scholarly journals Populasi Buaya Senyulong (Tomistoma schlegelii) di Taman Nasional Tanjung Puting Kabupaten Kotawaringan Barat Kalimantan Tengah

2020 ◽  
Vol 1 (3) ◽  
pp. 187-193
Author(s):  
Sosilawaty ◽  
Mohamad Rizal ◽  
Johansyah ◽  
Reynol Sainz Situmeang
Keyword(s):  
Standard Deviation ◽  
Population Density ◽  
Southeast Asia ◽  
National Park ◽  
West Java ◽  
Central Kalimantan ◽  
Brunei Darussalam

Indonesia known as center of Senyulong Crocodile (Tomistoma schlegelii) habitat in Southeast Asia, beside Sarawak and Peninsula Malaysia, Thailand and Brunei Darussalam. In the country, the crocodile can be found in East Sumatra, Kalimantan, and West Java. This research aims to determine the population and structure of Senyulong Crocodile (Tomistoma schlegelii) in Tanjung Puting National Park in West Kotawaringin District, Central Kalimantan. As the results, as many as 56 individuals of Senyulong Crocodile were found in the Camp Leakey Area (Sekonyer Kanan River) to Muara (Muara Ali) within the park, including 8 adult individuals, 15 individual children, and 33 individual infants. Opportunities for the appearance of one individual in the census (p) are 0,58 with a standard deviation (S) of 3.90. Population density (N) estimated about 16.09 individuals. The average observed individual from each observation (x?) was 9.33 individuals.

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