Back Soil Moisture Active Passive Catalan Soil Moisture Active Passive German رطوبت خاک فعال و غیرفعال Persian SMAP (satellite) French Soil Moisture Active Passive Galician Soil Moisture Active Passive ID Soil Moisture Active Passive Latvian/Lettish Soil Moisture Active Passive Portuguese Soil Moisture Active Passive Swedish ซอยล์มอยซ์เจอร์แอคทีฟพาสซีฟ Thai
.jpg) An artist rendering of the Soil Moisture Active Passive spacecraft. | |
| Mission type | Earth observation |
|---|---|
| Operator | NASA |
| COSPAR ID | 2015-003A |
| SATCAT no. | 40376 |
| Website | smap |
| Mission duration | 3 years (nominal) [1] Elapsed: 9 years, 5 months, 14 days |
| Spacecraft properties | |
| Manufacturer | Jet Propulsion Laboratory |
| Launch mass | 944 kg |
| Payload mass | 79 kg |
| Dimensions | 1.5 x 0.9 x 0.9 m |
| Power | 1450 watts |
| Start of mission | |
| Launch date | 31 January 2015, 14:22 UTC [2] |
| Rocket | Delta II 7320-10C [3] |
| Launch site | Vandenberg, SLC-2W |
| Contractor | United Launch Alliance |
| Entered service | August 2015 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Sun-synchronous |
| Perigee altitude | 680.9 km |
| Apogee altitude | 683.5 km |
| Inclination | 98.12° |
| Period | 98.5 minutes |
| Epoch | 15 October 2019, 23:39:39 UTC[4] |
SMAP · Earth
Soil Moisture Active Passive (SMAP) is a NASA environmental monitoring satellite that measures soil moisture across the planet. It is designed to collect a global 'snapshot' of soil moisture every 2 to 3 days. With this frequency, changes from specific storms can be measured while also assessing impacts across seasons of the year.[5] SMAP was launched on 31 January 2015.[2] It was one of the first Earth observation satellites developed by NASA in response to the National Research Council's Decadal Survey.[6][7]
NASA invested US$916 million in the design, development, launch, and operations of the program.[8]
An early fault in a radar power supply limited the resolution of the radar data collected from 2015 onwards.
- ^ "SMAP Mission Brochure" (PDF). NASA.gov. Archived from the original (PDF) on 2015-03-22. Retrieved November 16, 2022.
- ^ a b "NASA SMAP "Here I go!!!!"". NASA/Jet Propulsion Laboratory. 31 January 2015. Retrieved 31 January 2015.
- ^ Ray, Justin (16 July 2012). "NASA gives the Delta 2 rocket a new lease on life". Spaceflight Now. Retrieved 17 July 2012.
- ^ "SMAP - Orbit". Heavens-Above. 15 October 2019. Retrieved 16 October 2019.
- ^ "SMAP Mission Description". NASA JPL. Retrieved November 16, 2022.
- ^ O'Neill, Peggy; et al. (2010). The NASA Soil Moisture Active Passive (SMAP) Mission: Overview. 30th IEEE International Geoscience and Remote Sensing Symposium. 25–30 July 2010. Honolulu, Hawaii. NASA. hdl:2060/20110015242.
- ^ "Decadal Survey". NASA. Archived from the original on 25 August 2009.
- ^ Cite error: The named reference
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