20:
44:
267:
303:
175:(30 m along the equator) and coverage includes Africa, Europe, North America, South America, Asia, and Australia. A derived one arcsecond dataset with trees and other non-terrain features removed covering Australia was made available in November 2011; the raw data are restricted for government use. For the rest of the world, only three arcsecond (90 m along the equator) data are available. Each one arcsecond tile has 3,601 rows, each consisting of 3,601
292:
32:
670:
Farr, Tom G.; Rosen, Paul A.; Caro, Edward; Crippen, Robert; Duren, Riley; Hensley, Scott; Kobrick, Michael; Paller, Mimi; Rodriguez, Ernesto; Roth, Ladislav; Seal, David; Shaffer, Scott; Shimada, Joanne; Umland, Jeffrey; Werner, Marian; Oskin, Michael; Burbank, Douglas; Alsdorf, Douglas (2007). "The
123:
data, the SRTM payload was outfitted with two radar antennas. One antenna was located in the
Shuttle's payload bay, the other – a critical change from the SIR-C/X-SAR, allowing single-pass interferometry – on the end of a 60-meter (200-foot) mast that extended from the payload bay once the Shuttle
278:
The elevation datasets are affected by mountain and desert no-data areas. These amount to no more than 0.2% of the total area surveyed, but can be a problem in areas of very high relief. They affect all summits over 8,000 meters, most summits over 7,000 meters, many Alpine and similar summits and
257:
The terminology regarding versions and resolutions can be confusing. "SRTM1" and "SRTM3" refers to the resolutions in 1 and 3 arc-seconds, not the versions of the format. On the other hand, "SRTM4.1" refers to a specific filled version by CGIAR-CSI. It is recommended to add a "v" in front of the
341:
web site. The United States
Government announced on September 23, 2014 over a United Nations Climate Summit that the highest possible resolution of global topographic data derived from the SRTM mission will be released to public. Before the end of the same year, a 1-arc second global digital
320:
The void-filled SRTM data from
Viewfinder Panoramas by Jonathan de Ferranti are high quality at full SRTM resolution. The data is filled using local survey maps and photographs. The OpenTopoMap website uses this fill. It has been partially updated for the 1-arcsecond release in the
785:, International Journal of Geographical Information Science, 21:9, 983–1008 – 'the ‘finished’ grade version of the data (also referred to as Version 2) still contains data voids (some 836,000 km^2)'; 836,000 is 0.164% of the Earth's 5.1×10^8 km^2 surface
342:
elevation model (30 meters) was released. Most parts of the world have been covered by this dataset ranging from 54°S to 60°N latitude except for the Middle East and North Africa area. Missing coverage of the Middle East was completed in August 2015.
517:
1248:
Hennig, T., Kretsch, J, Salamonowicz, P, Pessagno, C, and Stein, W., The
Shuttle Radar Topography Mission, Proceedings of the First International Symposium on Digital Earth Moving 2001, Springer Verlag, London,
317:
The USGS HydroSHEDS dataset was generated for hydrological applications and is suitable for consistent drainage and water flow information. References are provided on the algorithms used and quality assessment.
1012:
310:
Groups of scientists have worked on algorithms to fill the voids of the original SRTM (v2.1) data. Three datasets offer global coverage void-filled SRTM data at full (3-arcsecond) resolution:
283:
from surrounding data, and may therefore be very inaccurate. If the voids are large, or completely cover summit or ridge areas, no interpolation algorithms will give satisfactory results.
325:
In
November 2013, LP DAAC released the NASA Shuttle Radar Topography Mission (SRTM) Version 3.0 (SRTM Plus) Product collection with all voids eliminated. Voids were filled primarily from
600:
254:(ASI). The resulting dataset is usually called SRTM/X-SAR, or SRTMX for short. The grid resolution is high at 25 meters, but it has many gaps. The data was made public in May 2011.
1182:"Comparison of free high-resolution digital elevation data sets (ASTER GDEM2, SRTM v2.1/v4.1) and validation against accurate heights from the Australian National Gravity Database"
1434:
374:
242:
Version 3 (2013), also known as SRTM Plus, is void-filled with ASTER GDEM and USGS GMTED2010. This release is available in global 1-arcsecond (30 meter) resolution since 2014.
521:
329:, and secondarily from USGS GMTED2010 – or USGS National Elevation Dataset (NED) for the United States (except Alaska) and northernmost Mexico according to the announcement.
799:
539:
732:
1005:"NASA Shuttle Radar Topography Mission (SRTM) Global 1 arc second Data Released Over the Middle East - LP DAAC :: NASA Land Data Products and Services"
1910:
1260:
Li, P.; Li, Z.; Muller, J.-P.; Shi, C.; Liu, J. (November 2016). "A new quality validation of global digital elevation models freely available in China".
1392:
1030:
626:
1004:
782:
761:
1181:
1323:
1124:"Comparison and validation of recent freely-available ASTER-GDEM ver1, SRTM ver4.1 and GEODATA DEM-9S ver3 digital elevation models over Australia"
555:"Comparison and validation of recent freely-available ASTER-GDEM ver1, SRTM ver4.1 and GEODATA DEM-9S ver3 digital elevation models over Australia"
1056:
445:
911:
1123:
554:
239:
Version 2.1 (~2005) is an edited version of v1. Artifacts are removed, but voids are not yet filled. There are 1-arcsecond data over the US.
279:
ridges, and many gorges and canyons. There are some SRTM data sources which have filled these data voids, but some of these have used only
1964:
359:
133:
125:
350:
In early June 2011, there were 750,000 confirmed users of SRTM topography dataset. Users in 221 countries have accessed the site.
200:
The
Shuttle Radar Topography Mission is an international project spearheaded by the U.S. National Geospatial-Intelligence Agency (
2023:
1651:
1385:
724:
656:
369:
201:
182:
cells. The dimensions of the three arcsecond tiles are 1201 x 1201. The original SRTM elevations were calculated relative to the
518:"NASA Shuttle Radar Topography Mission (SRTM) Version 3.0 Global 1 arc second Data Released over Asia and Australia Version 1.0"
143:
of latitude and one degree of longitude, named according to their south western corners. For example, "n45e006" stretches from
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2018:
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1997:
97:, to generate the most complete high-resolution digital topographic database of Earth prior to the release of the
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geoid separation values were added to convert to heights relative to the geoid for all the released products.
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232:
The USGS SRTM data is based on NASA's SIR-C instrument. It is available in at the following versions:
19:
1884:
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197:. They can be downloaded freely over the Internet, and their file format (.hgt) is widely supported.
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912:"NASA Shuttle Radar Topography Mission (SRTM) Version 3.0 (SRTM Plus) Product Release"
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1057:"SRTM vs ASTER elevation products. Comparison for two regions in Crete, Greece"
1055:
Nikolakopoulos, K. G.; Kamaratakis, E. K; Chrysoulakis, N. (10 November 2006).
885:
446:"SRTM vs ASTER elevation products. Comparison for two regions in Crete, Greece"
444:
Nikolakopoulos, K. G.; Kamaratakis, E. K; Chrysoulakis, N. (10 November 2006).
140:
60:
1217:
1156:
1147:
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472:
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1-arc second global digital elevation model (30 meters) is available from the
314:
The CGIAR-CSI version 4 provides the best global coverage using interpolation.
291:
2012:
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280:
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68:
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in 2003; the canister, mast, and antenna are now on display at the
1367:– Unofficial SRTM data with voids corrected using topographic maps
944:
855:
119:(SIR-C/X-SAR), previously used on the Shuttle in 1994. To acquire
113:
mission in
February 2000. The radar system was based on the older
1889:
1666:
1456:
1295:
974:
783:
An evaluation of void filling interpolation methods for SRTM data
725:"SRTM X-SAR - Digital Elevation Model (DEM) 10° Mosaics - Global"
412:
48:
139:
The elevation models are arranged into tiles, each covering one
1784:
1339:
1027:"DAPA's SRTM topography data reaches 750,000 users | DAPA"
176:
110:
1335:– Full resolution SRTM-based DEM for hydrological applications
375:
Advanced
Spaceborne Thermal Emission and Reflection Radiometer
208:, and the U.S. National Aeronautics and Space Administration (
1625:
1332:
795:
187:
183:
102:
1355:
1351:
536:"SRTM-derived 1 Second Digital Elevation Models Version 1.0"
413:"Shuttle Radar Topography Mission: Mission to Map the World"
193:
The elevation models derived from the SRTM data are used in
1949:
1661:
246:
The SRTM also carries the X-SAR instrument operated by the
209:
623:"Cannister/Mast, Shuttle Radar Topography Mission Payload"
387:
private data with higher resolution, from newer satellite
116:
Spaceborne
Imaging Radar-C/X-band Synthetic Aperture Radar
800:
31:
16:
Project to create a digital topographic database of Earth
1359:
1316:– arcsecond-resolution derived data covering Australia
1121:
552:
975:"U.S. Releases Enhanced Shuttle Land Elevation Data"
669:
332:
85:) is an international research effort that obtained
1122:Hirt, C.; Filmer, M.S.; Featherstone, W.E. (2010).
553:Hirt, C.; Filmer, M.S.; Featherstone, W.E. (2010).
306:Example of relief map from SRTM1 (central Nevada)
124:was in space. The technique employed is known as
2010:
1314:Digital elevation data from Geoscience Australia
101:in 2009. SRTM consisted of a specially modified
270:SRTM void filling with spline interpolation in
35:The SRTM was flown on an 11-day mission of the
1338:Software that can read and process SRTM data:
1400:
1386:
1259:
625:. Smithsonian National Air and Space Museum.
405:
236:Version 1 (2003–2004) is almost the raw data.
1310:– Please read the accompanying documentation
286:
212:). NASA transferred the SRTM payload to the
132:was the prime contractor for processing the
1393:
1379:
1216:
1179:
1155:
692:
586:
214:Smithsonian National Air and Space Museum
781:Reuter H.I, A. Nelson, A. Jarvis, 2007,
360:Interferometric Synthetic Aperture Radar
301:
290:
265:
171:. The resolution of the raw data is one
134:interferometric synthetic aperture radar
126:interferometric synthetic aperture radar
42:
30:
18:
1064:International Journal of Remote Sensing
453:International Journal of Remote Sensing
439:
437:
435:
433:
370:National Geospatial-Intelligence Agency
2011:
866:from the original on 28 September 2014
1531:Multi-angle imaging spectroradiometer
1374:
939:
937:
922:from the original on 24 December 2013
892:from the original on 10 December 2009
1189:Australian Journal of Earth Sciences
1128:Australian Journal of Earth Sciences
979:JPL-Shuttle Radar Topography Mission
955:from the original on 6 February 2015
836:from the original on 21 October 2014
806:from the original on 16 October 2014
559:Australian Journal of Earth Sciences
430:
985:from the original on 23 August 2008
671:Shuttle Radar Topography Mission".
13:
1543:Tropospheric Emission Spectrometer
1308:NASA's server with SRTM data tiles
1253:
934:
629:from the original on 9 August 2014
546:
14:
2050:
1933:Mars Astrobiology Explorer-Cacher
1880:Nancy Grace Roman Space Telescope
1289:
796:"SRTM 90m Digital Elevation Data"
333:Highest Resolution Global Release
1998:Space Flight Operations Facility
1790:Shuttle Radar Topography Mission
1015:from the original on 2015-09-13.
659:from the original on 2016-12-30.
603:from the original on May 3, 2013
542:from the original on 2012-02-28.
261:
258:version number to disambiguate.
79:Shuttle Radar Topography Mission
71:, are visible in the foreground.
1847:Wide Field and Planetary Camera
1033:from the original on 2011-08-19
1019:
997:
967:
916:United States Geological Survey
904:
878:
860:United States Geological Survey
848:
830:United States Geological Survey
818:
788:
775:
764:from the original on 2018-05-20
746:
735:from the original on 2021-09-10
419:from the original on 2008-08-23
339:United States Geological Survey
55:the surface created using SRTM
23:SRTM Shaded Relief Anaglyph of
2024:Space synthetic aperture radar
1274:10.1179/1752270615Y.0000000039
758:DLR - Earth Observation Center
717:
663:
653:USGS Data Distribution Service
641:
615:
528:
510:
195:geographic information systems
105:system that flew on board the
1:
1927:Astrobiology Field Laboratory
1356:DG Terrain Viewer/Void Killer
1048:
1993:Near-Earth Asteroid Tracking
1853:Wide Field Infrared Explorer
1537:Soil Moisture Active Passive
1440:Atmospheric infrared sounder
1209:10.1080/08120099.2014.884983
1180:Rexer, M.; Hirt, C. (2014).
826:"USGS HydroSHEDS References"
89:on a near-global scale from
7:
1512:Mars Reconnaissance Orbiter
353:
227:
218:Steven F. Udvar-Hazy Center
10:
2055:
1970:Table Mountain Observatory
206:U.S. Department of Defense
1983:
1942:
1919:
1898:
1885:Near-Earth Asteroid Scout
1867:
1796:Solar Mesosphere Explorer
1578:
1475:Large Binocular Telescope
1408:
1402:Jet Propulsion Laboratory
1319:Void filled SRTM data at
1148:10.1080/08120091003677553
1084:10.1080/01431160600835853
579:10.1080/08120091003677553
473:10.1080/01431160600835853
287:Void-filled SRTM datasets
2019:Digital elevation models
1975:Solar System Ambassadors
1802:Spaceborne Imaging Radar
888:. Viewfinder Panoramas.
886:"DIGITAL ELEVATION DATA"
398:
345:
87:digital elevation models
1960:NASA Deep Space Network
1808:Spitzer Space Telescope
1728:Mars Exploration Rovers
1519:Mars Science Laboratory
1446:Deep Space Atomic Clock
1360:Virtual Terrain Project
1296:Official NASA SRTM site
365:Digital elevation model
248:German Aerospace Center
186:ellipsoid and then the
107:Space Shuttle Endeavour
37:Space Shuttle Endeavour
2034:Spacecraft instruments
1525:Microwave limb sounder
1302:NASA MEaSUREs Products
307:
299:
275:
74:
40:
28:
2039:Topography techniques
1943:Related organizations
945:"USGS Earth Explorer"
673:Reviews of Geophysics
305:
294:
269:
130:Intermap Technologies
47:This NASA image used
46:
34:
22:
1988:JPL Science Division
1722:Mars Global Surveyor
1690:Mars Climate Orbiter
1365:Viewfinder Panoramas
918:. 30 November 2013.
862:. 6 September 2010.
832:. 5 September 2010.
729:European Data Portal
703:10.1029/2005RG000183
380:SRTM Water Body Data
297:Sierra Nevada, Spain
252:Italian Space Agency
204:), an agency of the
2029:2000 in spaceflight
1201:2014AuJES..61..213R
1140:2010AuJES..57..337H
1076:2006IJRS...27.4819N
685:2007RvGeo..45.2004F
571:2010AuJES..57..337H
465:2006IJRS...27.4819N
222:Chantilly, Virginia
157:and "s45w006" from
1326:2013-02-07 at the
1304:(SRTM V3 and more)
1218:20.500.11937/38264
1157:20.500.11937/43846
949:USGS-EarthExplorer
802:. 19 August 2008.
588:20.500.11937/43846
308:
300:
276:
109:during the 11-day
75:
41:
29:
2006:
2005:
1965:Goldstone Complex
1920:Canceled missions
1899:Proposed missions
1716:Mars Polar Lander
856:"USGS HydroSHEDS"
459:(21): 4819–4838.
65:Cape of Good Hope
39:in February 2000.
2046:
1868:Planned missions
1859:Lunar Flashlight
1470:Keck observatory
1409:Current missions
1395:
1388:
1381:
1372:
1371:
1298:(SRTM V1 and V2)
1285:
1268:(351): 409–420.
1245:
1243:
1241:
1235:
1229:. Archived from
1220:
1186:
1176:
1174:
1172:
1159:
1118:
1116:
1114:
1109:on July 21, 2011
1108:
1102:. Archived from
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520:. Archived from
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491:. Archived from
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25:Zagros Mountains
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1710:Mars Pathfinder
1587:Cassini-Huygens
1574:
1554:Voyager program
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1399:
1333:USGS HydroSHEDS
1328:Wayback Machine
1292:
1256:
1254:Further reading
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1236:on June 7, 2016
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694:10.1.1.102.9372
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1494:Perseverance
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1482:Mars Odyssey
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1261:
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1231:the original
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1104:the original
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838:. Retrieved
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728:
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676:
672:
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649:"What's new"
643:
631:. Retrieved
617:
605:. Retrieved
562:
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522:the original
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493:the original
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69:South Africa
1742:Opportunity
1601:Deep Impact
926:26 December
896:26 December
810:26 December
327:ASTER GDEM2
121:topographic
59:data. The
53:texture-map
2013:Categories
1638:spacecraft
1504:helicopter
1049:References
1037:2011-06-24
989:31 January
959:31 January
870:10 October
840:10 October
768:2021-02-14
739:2021-02-14
423:2009-04-26
389:TerraSAR-X
250:(DLR) and
99:ASTER GDEM
1621:Explorers
1567:Voyager 2
1560:Voyager 1
1502:Ingenuity
1488:Mars 2020
1344:GRASS GIS
1321:CGIAR-CSI
1282:129792781
1240:April 24,
1166:140651372
1113:March 10,
1092:0143-1161
711:140735782
689:CiteSeerX
597:140651372
481:0143-1161
272:GRASS GIS
180:bigendian
173:arcsecond
57:Elevation
1820:Surveyor
1814:Stardust
1768:QuikSCAT
1678:Magellan
1657:Herschel
1451:GRACE-FO
1430:ACRIMSAT
1348:SAGA GIS
1324:Archived
1031:Archived
1013:Archived
983:Archived
953:Archived
920:Archived
890:Archived
864:Archived
834:Archived
804:Archived
762:Archived
733:Archived
657:Archived
627:Archived
601:Archived
540:Archived
417:Archived
393:TanDEM-X
385:WorldDEM
354:See also
228:Versions
51:data to
1955:Caltech
1935:(MAX-C)
1911:FINESSE
1890:SPHEREx
1836:Ulysses
1779:Rosetta
1763:Pioneer
1757:Phoenix
1698:(MarCO)
1684:Mariner
1667:Jason-1
1646:Genesis
1632:Galileo
1457:InSight
1227:3783826
1197:Bibcode
1136:Bibcode
1100:1939968
1072:Bibcode
681:Bibcode
633:24 July
567:Bibcode
489:1939968
461:Bibcode
49:Landsat
1855:(WIRE)
1849:(WFPC)
1842:Viking
1792:(SRTM)
1785:Seasat
1773:Ranger
1734:Spirit
1672:Kepler
1539:(SMAP)
1533:(MISR)
1442:(AIRS)
1424:Psyche
1417:Euclid
1280:
1225:
1171:May 5,
1164:
1098:
1090:
754:"SRTM"
709:
691:
607:May 5,
595:
502:1 July
487:
479:
177:16 bit
141:degree
136:data.
111:STS-99
1929:(AFL)
1825:SVLBI
1804:(SIR)
1798:(SME)
1751:NSCAT
1744:rover
1736:rover
1652:GRACE
1626:GALEX
1545:(TES)
1527:(MLS)
1521:(MSL)
1515:(MRO)
1496:rover
1477:(LBT)
1435:ASTER
1278:S2CID
1234:(PDF)
1223:S2CID
1185:(PDF)
1162:S2CID
1107:(PDF)
1096:S2CID
1060:(PDF)
707:S2CID
593:S2CID
496:(PDF)
485:S2CID
449:(PDF)
399:Notes
346:Users
188:EGM96
184:WGS84
103:radar
1950:NASA
1662:IRAS
1594:Dawn
1549:SWOT
1464:Juno
1340:3dem
1242:2014
1173:2012
1115:2010
1088:ISSN
991:2015
961:2015
928:2023
898:2023
872:2014
842:2014
812:2023
635:2014
609:2012
504:2009
477:ISSN
210:NASA
166:44°S
159:45°S
152:46°N
145:45°N
95:60°N
91:56°S
83:SRTM
77:The
63:and
1270:doi
1249:UK.
1213:hdl
1205:doi
1152:hdl
1144:doi
1080:doi
699:doi
583:hdl
575:doi
469:doi
321:US.
220:in
202:NGA
169:5°W
164:to
162:6°W
155:7°E
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148:6°E
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