Satelite alos pdf

Table 3: Statistical analysis of the altitude difference between control points and DEMs. Figure 4 shows the altimetric error their best application scale. It is important to highlight distribution of each DEM where it is possible to notice that this methodology has been used in several similar a positive distortion in all DEMs, as well as a higher studies such as Moura et al.

Table 5: Extracted points from the DEMs quantity and percentage which showed altimetric errors below 15 and 25 meters. In this sense, these DEMs can altimetric errors below 15 and 25 meters. In fact, ALOS and in similar areas. However, Andrades Filho and Rossetti free that can make these comparisons possible, such stated that SRTM products have a higher as, for instance, the control points of the high potential for delineating morpho-structural accuracy altimetric network used in this study, thus lineaments when compared to ALOS PALSAR.

Thomas et al. Nonetheless, banks of the Brazilian highways. But it is worth the results presented by Mantelli et al. Particularly in this study, we found that all four Regarding the Brazilian cartographic accuracy assessed DEMs can support several types of standard, the results presented by Moura et al. However, future DEMs assessments should DEMs for watersheds with little rugged relief, but for be based on the accuracy of a specific application, watersheds with higher slopes and higher drainage such as hydrodynamics modelling as well as they density, the results showed compatibility with scales should investigate the correlation between altimetric of , and smaller than this.

Geocarto International, 33 11 , Japan Aerospace Exploration Agency. Sensing, 33 4 , Retrieved 16 Arabameri, A. Alaska Satellite Facility: Fairbanks, Alaska. Liu, J. Secretaria do Planejamento e da Mantelli, L.

Hazra P and Krishna A P Spatio-temporal and surface elevation change assessment of glaciers of Sikkim Himalaya India across different size classes using geospatial techniques; Environ. Chinese Soc. Remote Sens.

Spatial Inform. LeFavour G and Alsdorf D Water slope and discharge in the Amazon River estimated using the shuttle radar topography mission digital elevation model; Geophys. Hazards Earth Syst. Indicators 7 2 — Asian Earth Sci. Earth Observ. Moosdorf N, Cohen S and von Hagke C A global erodibility index to represent sediment production potential of different rock types; Appl.

Earth Syst. Soil Sci. Paul F and Haeberli W Spatial variability of glacier elevation changes in the Swiss Alps obtained from two digital elevation models; Geophys. Model Analytics 2 21— Polonica 85 45— Change — Frequenz 55 75— Two partially snow-covered volcanoes can be seen above and below the lakes on the right, while plains stretch out to the west in a nearly vegetation-free environment. It is considered one of the driest places on Earth, as moisture from the Amazon Basin is blocked by the Andes to the east, as well as from the Pacific Ocean by the Chilean Coastal Range to the west.

Pacific Ocean currents and wind circulation also play a major role in the desert climate. Figure Flinders Ranges, South Australia. The geosyncline consists of sedimentary rocks in a basin that were folded about million years ago and have been eroded to the current landscape.

In this image, the different colors show the different layers of rock. Some of the oldest fossilized animal life have been found in parts of the Flinders Ranges. Running up the middle of this image is a long, narrow gorge — typical of the ranges.

Along the right side of the image, the terrain is flat with a long, straight road running north—south. Numerous creeks appear like veins across the entire image. The city can be seen in in the upper left corner, while large, irrigated agricultural plots appear like Braille across the image.

The two parallel runways of the Kufra Airport can seen between the city and the plots. Legend of Figure 23 : The agricultural plots reach up to a 1 km in diameter. Their circular shapes were created by a central-pivot irrigation system, where a long water pipe rotates around a well at the center of each plot. Since the area receives virtually no rainfall, fossil water is pumped from deep underground for irrigation. Although Libya has no permanent rivers or natural inland water bodies, it has various vast fossil aquifers — natural underground basins that hold enormous amounts of fresh water.

Heavy amounts of rainfall seeped underground to saturate subsurface sandstone, penetrating as deep as 4 km. Over the central high plains, the entire Lake Tersakan on the left side is seen, with part of Lake Tuz in the upper right corner. Legend to Figure 24 : While some of the surrounding land of Lake Tersakan shows the patchwork of agriculture, other areas are prone to the seasonal flooding of salty water.

During the summer months, however, the lakewater recedes to expose a thick layer of salt. The salt from Lake Tuz is also mined, providing over half of the salt consumed in Turkey. In addition to its economic importance, the lake provides an important breeding ground for the Greater Flamingo and the Greater White-fronted Goose. Since the project didn't see any way in recovering the communication with the satellite, JAXA decided to complete operations with the spacecraft and ended the mission.

However, JAXA continues to investigate the causes of the power generation anomaly based on the data acquired from the satellite. ALOS, launched on January 24, , had been operated for over five years, which was its target life and well beyond its design life of three years, and it achieved many fruitful results related to Earth observations.

And thanks to Daichi's active contribution to overseas rescue operations at the time of major disasters, Japan received in return about 5, scenes of imagery from overseas at the time of the Great East Japan Earthquake in March through the International Charter Space and Major Disasters and from Sentinel Asia Ref.

As a consequence, all the onboard observation devices were turned off due to the anomaly of power generation reduction. JAXA is investigating the cause of this problem while taking necessary measures.

The reef provides a significant habitat for threatened species, including marine turtles, manatees and the American marine crocodile.

Legend to Figure 25 : In the upper-central part of the image, an underwater sinkhole known as the Great Blue Hole appears as a dark blue circle. Surrounded by the shallow waters of the coral reef, the Great Blue Hole measures over m in diameter and about m deep. Formed when the sea level was much lower, rain and chemical weathering eroded the exposed terrain. Water later filled the hole and covered the area when the sea level rose at the end of the ice age. The earthquake and tsunami caused severe damage in many cities, and more than 20 thousand people were killed and lost their homes.

Legend to Figure 27 : The image was caputerd on Sept. In the Betsiboka estuary, Madagascar's argest river flows into Bombetoka Bay, which then opens into the Mozambique Channel. The red colouring of the sandbars and islands between the 'jellyfish tentacles' comes from sediments washed from hills and into the streams and rivers during heavy rain. The seaport city of Mahajanga can be seen in the upper-left corner of the image. ALOS was a Third Party Mission of ESA utilizing its multi-mission ground systems of existing national and industrial facilities and expertise to acquire, process and distribute data from the satellite.

With an area of sq km, Lake Garda is the largest lake in Italy and the third largest in the Alpine region. It was formed by glaciers flowing out of the Alps during the last Alpine ice age, which ended around 12 years ago. East of the lake is the Adige River, flowing south before curving east toward Verona and then to the Adriatic Sea. As of August , the total images observed accumulated to 48,, scenes, and post-disaster observations have been provided Ref.

This represents the world's first data transmission test of this kind. In addition, the criteria for RSP control sub-satellite point cross-track control were changed to improve SAR interferometry. The calibration parameters for STT and the precision attitude determination system were updated; furthermore the paddle drive control law software was reprogrammed in AOCS to improve attitude stability.

This required the execution of two sky maneuvers for seven days in total. ALOS retreated automatically into the safe mode LLM initiated by attitude check due to a software bug in a ground system and two operational problems. On February 20, , a first post-disaster emergency monitoring was performed for the Leyte Island landslide of the Philippine.

The objective is to obtain high-resolution stereo data pixel size of 2. Each of the three telescopes employs a three mirror type optics design 30 cm aperture diameter and 2 m focal length and several CCD detectors for pushbroom scanning. Six or eight silicon CCDs pixels each are physically aligned at each telescope's focal plane. Of the 40, pixels per telescope, 14, pixels are electronically selected and transferred to the ground station.

They are used to estimate gain and offset of the amplifiers. AVNIR-2 is calibrated using internal calibration lamps. During the commissioning phase, an extensive calibration and product validation campaign is being conducted.

Objective: provision of high-resolution 10 m multispectral data. The telescope aperture is 24 cm in diameter, it has a focal length of about mm. The silicon CCD detector arrays have pixels per line pushbroom type instrument. Applications: monitoring of regional environment land coverage and land-use maps, etc. Calibration: AVNIR-2 uses two onboard calibration lamps which are used for absolute and relative calibration sequences.

In addition, internal electrical calibration is provided. The SAR antenna is of size: 8. Electrical beamsteering in elevation is provided. The bandwidth is 28 MHz in single polarization and 14 MHz in the dual-polarization modes. Out of the 72 possible FB modes, two have been selected for operational use. Out of the 12 ScanSAR modes available, the sort-burst, HH polarization, 5-beam mode has been selected for operational support. Polarization is changed in every pulse of transmission signal, and dual polarization signals are simultaneously received.

The operation is limited in lower incident angle in order to achieve higher performances. At the nominal off-nadir angle The ALOS instruments are capable to observe the surface of the entire world within the following limits:. The objective is to provide support for precise orbit determination. The corner cubes are made of the highest quality fused silica. Their performance is optimized at the green wavelength nm. The corner cubes are symmetrically mounted on a hemispherical surface with one nadir-looking corner cube in the center, surrounded by an angled ring of eight corner cubes.

The significance of ALOS is its ability to provide global coverage of land observation and to transmit this huge amount of data acquired. The ALOS Data Node consists of one representative organization in each region and cooperative organizations including the data distributors. Example Data Nodes are: 74 75 RESTEC serves as the regional distributor in the Asia and Russian area as well as the coordinating agency among all of the regional distributors. ASF and its partners will provide Level 0, Level 1 and higher order products to commercial and research users throughout North, Central and South America.

ESA is supporting ALOS as a 'Third Party Mission', which means the Agency utilizes its multi-mission ground systems of existing national and industrial facilities and expertise to acquire, process and distribute data from the satellite. The aim is to dramatically increase the frequency of observations for earthquake hazards, the decline of forests and changing water resources in North and South America. The main concept of the ALOS data policy should be that each Data Node would be allowed to handle their regional data according to its own data policy.

International talks on this concept are about to produce an agreed inter-Node distribution policy defining an interface where the respective regional policies will meet. The whole mechanism will be a combination of de-centralized research and non-research data distribution.

A private consortium may be established for promoting commercial data use. At a multilateral level, nations have not been able to reach a coherent, effectively functioning data policy despite decades of lengthy discussions. If this Data Node concept is successfully implemented, it may demonstrate an effective model of a program-oriented approach to an integrated, disseminated data policy.

The agreements were finalized on Aug. Uo, T. Kawahara, M. Komar, J. Wang, T. Kimura, Editors, Jan. Iwata, K. Sato, R. Kashikawa, H. Takayasu, M. Chapel, R. Culp, ed , Vol. Suzuki, M. Tsuchiya, S. Saunier, P. Goryl, M. Bouvet, R. Santer, A. Gruen, K. Wolf, F.

Eriksson, G. Sandberg, L. Ulander, G. Smith-Jonforsen, B. Hallberg, K. Folkesson, J. Fransson, M. Magnusson, H. Lucas, J. Papathanassiou, N. Marquart, M. Zink, M. Meininger, P. Meadows, A. Rye, P. Wright, B. Tadono, M. Shimada, M. Watanabe, T. Hashimoto, T. Shimada, T. Hashimoto, J. Takaku, A. Mukaida, S. Fujimura, T.

Kimura, M. Miyauchi, N. Ito, T. Hamazaki, K. Rosenquist, M. Watanabe, K. Watanabe, A. Rosenquist, N. Moriyama, T. Moriyama, M. Tadono, H. Satake, S. Tsuchiya, O. Ochiai, T. Endo, H. Tanimoto, H. Shimada, H. Wakabayashi, T. Tadono, A. Rosenqvist, T. Ogawa, M. Shimada and T. The information compiled and edited in this article was provided by Herbert J. You are here Home. Parameter Panchromatic Sensor Spectral band panchromatic 0.