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Instrument details
Acronym
HAIRS
Full name
High Accuracy Inter-satellite Ranging System
Purpose
Solid Earth - Observation of the gravity field along the orbit
Short description
Two-frequency ranging, in K-band (24 GHz) and Ka-band (32 GHz)
Background
New development
Scanning Technique
N/A
Resolution
N/A
Coverage / Cycle
N/A
Mass
Power
Data Rate
Providing Agency
NASA
Instrument Maturity
Flown on an R&D satellite
Utilization Period:
2002 to 2017-10-27
Last update:
2021-06-15
Detailed characteristics
Satellites this instrument is flying on
Note: a red tag indicates satellites no longer operational, a
green tag indicates operational satellites, a blue tag indicates
future satellites
Instrument classification
Other payload component Gravity sensing system
WIGOS Subcomponents
Subcomponent 1 Gravimetry sensing system
Mission objectives
Primary mission objectives Gravity field Gravity gradients Secondary mission objectives Show all Show fewer
Tentative Evaluation of Measurements
The following list indicates which measurements can typically be
retrieved from this category of instrument. To see a full Gap Analysis by Variable,
click on the respective variable.
Note: table can be sorted by clicking on the column headers
Variable Relevance for measuring this variable Operational limitations Explanation
Geoid 3 - high Highly indirect. Multi-satellite system to reconstruct the Earth's gravity field, hence the geoid
Gravity field 1 - primary Assimilation in gravity model needed. Multi-satellite system to reconstruct the Earth's gravity field
Gravity gradients 1 - primary Assimilation in gravity model needed. Satellite-to-satellite tracking system to reconstruct the Earth's gravity field
Instrument: HAIRS