First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies

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Springer Science & Business Media, Feb 14, 2003 - Science - 563 pages
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In 1995, the German Space Agency DARA selected the CHAllenging Minisatellite Payload (CHAMP) mission for development under a special support programme for the space industry in the new states of the unified Germany, with the Principal Investigator and his home institution GFZ Potsdam being ultimately responsible for the success of all mission phases. After three years of spacecraft manufactur ing and testing, the satellite was injected successfully into its final, near circular, almost polar and low altitude (450 km) orbit from the cosmodrome Plesetsk in Russia on July 15, 2000. After a nine month commissioning period during which all spacecraft systems and instruments were checked, calibrated and validated, the satellite has been delivering an almost uninterrupted flow of science data since May 2001. Since this date, all science data have been made available to the more than 150 selected co-investigator teams around the globe through an international Announcement of Opportunity. The scientific goals of the CHAMP mission are to gain a better understanding of dynamic processes taking place in the Earth's interior and in the space near Earth. These goals can be achieved by improved observation of the Earth's gravity and magnetic fields and their time variability with high-performance on-board instru mentation and by exploring the structure of the Earth's atmosphere and ionosphere through radio occultation measurements.
 

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Contents

CHAMP Orbit and Gravity Instrument Status
3
On Board Evaluation of the STAR Accelerometer
11
Determination of CHAMP Accelerometer Calibration Parameters
19
CHAMP Accelerometer and Star Sensor Data Combination
26
CHAMP Clock Error Characterization
32
Determination of the CHAMP GPS Antenna with Respect to Satellites Mass Center
38
Spaceborne GPS for POD and Earth Science
42
The CHAMP Orbit Comparison Campaign
53
Improving the Definition of Cratonic Boundaries Utilizing the Lithospheric Magnetic Field derived from CHAMP Observations
275
Crustal Magnetisation Distribution Deduced from CHAMP Data
281
Multiscale Downward Continuation of CHAMP FGMData for Crustal Field Modelling
288
CHAMP Enhances Utility of Satellite Magnetic Observations to Augment NearSurface Magnetic Survey Coverage
296
Comparing Magsat Ĝrsted and CHAMP Crustal Magnetic Anomaly Data over the Kursk Magnetic Anomaly Russia
302
CHAMP Ĝrsted and Magsat Magnetic Anomalies of the Antarctic Lithosphere
309
Separation of External Magnetic Signal for Induction Studies
315
TwoDimensional Spatiotemporal Modelling of Satellite Electromagnetic Induction Signals
321

CHAMP Orbit Determination with GPS PhaseConnected Precise Point Positioning
59
Kinematic and Dynamic Determination of Trajectories for Low Earth Satellites Using GPS
65
CHAMP DoubleDifference Kinematic POD with Ambiguity Resolution
70
Approaches to CHAMP Precise Orbit Determination
78
STAR Accelerometer Contribution to Dynamic Orbit and Gravity Field Model Adjustment
85
Impact of different data combinations on the CHAMP Orbit Determination
92
CHAMP Rapid Science Orbit Determination Status and Future Prospects
98
Orbit Predictions for CHAMP Development and Status
104
Thermospheric Events in CHAMP Precise Orbit Determination
112
New Global Gravity Field Models from Selected CHAMP Data Sets
120
First Insight Into Temporal Gravity Variablility from CHAMP
128
CHAMP Gravity Field Recovery with the Energy Balance Approach
134
Preliminary Analysis of CHAMP State Vector and Accelerometer Data for the Recovery of the Gravity Potential
140
CHAMP Precise Orbit Determination and Gravity Field Recovery
146
Gravitational Field Modelling From CHAMPEphemerides by Harmonic Splines and Fast Multipole Techniques
153
Evaluation of Geoid Models with GPSLevelling Points in Sweden and Finland
159
Geophysical Impact of Field Variations
165
CHAMP Mass Displacements and the Earths Rotation
174
CHAMP Gravity Anomalies over Antarctica
180
Assimilation of Altimeter and Geoid Data into a Global Ocean Model
187
Total Density Retrieval with STAR
193
Earth Magnetic Field
201
CHAMP ME Data Processing and Open Issues
203
Ion DriftMeter Status and Calibration
212
CO2 A CHAMP Magnetic Field Model
220
Decadal and Subdecadal Secular Variation of Main Geomagnetic Field
226
Wavelet Based and Standard Methods
233
Improved Parameterization of External Magnetic Fields from CHAMP Measurements
239
Monitoring Magnetospheric Contributions using GroundBased and Satellite Magnetic Data
245
The Background and the Role of the CHAMP Mission
251
A Comparison of Global Lithospheric Field Models Derived from Satellite Magnetic Data
261
Mapping the Lithospheric Magnetic Field from CHAMP Scalar and Vector Magnetic Data
269
NightTime Ionospheric Currents
328
Multiscale Determination of Radial Current Distribution from CHAMP FGMData
339
Ionospheric Currents from CHAMP Magnetic Field Data Comparison with Ground Based Measurements
347
Mapping of FieldAligned Current Patterns during Northward IMF
353
FieldAligned Currents Inferred from LowAltitude EarthOrbiting Satellites and Ionospheric Currents Inferred from GroundBased Magnetometers Do ...
361
Neutral Atmosphere and Ionosphere
369
GPS Radio Occupation with CHAMP
371
Validation and Data Quality of CHAMP Radio Occultation Data
384
Global Climate Monitoring based on CHAMPGPS Radio Occultation Data
397
Initial Results on IonospherePlasmasphere Sounding based on GPS Data Obtained On Board CHAMP
408
Backpropagation Processing of GPS Radio Occultation Data
415
Combination of NOAA16ATOVS Brightness Temperatures and the CHAMP Data to get Temperature and Humidity Profiles
423
An Improvement of Retrieval Techniques for Ionospheric Radio Occultations
430
Validation of Water Vapour Profiles from GPS Radio Occultations in the Arctic
441
Comparison of DMIRetrieval of CHAMP Occupation Data with ECMWF
447
The Assimilation of Radio Occultation Measurements
453
Status of Ionospheric Radio Occultation CHAMP Data Analysis and Validation of Higher Level Data Products
462
NWP Model Specific Humidities Compared with CHAMPGPS and TERRAMODIS Data
473
Analysis of Gravity Waves from Radio Occultation Measurements
479
GPS Atmosphere and Ionosphere Methods used on Ĝrsted Data and Initial Application on CHAMP Data
485
Combining Radio Occultation Measurements with Other Instruments to Map the Ionospheric Electron Concentration
491
Vertical Gradients of Refractivity in the Mesosphere and Atmosphere Retrieved from GPSMET and CHAMP Radio Occultation Data
500
Observation of Reflected Signals in MIRGEO and GPSMET Radio Occultation Missions
508
Assimilation Experiments of Onedimensional Variational Analyses with GPSMET Refractivity
515
Monitoring the 3 Dimensional Ionospheric Electron Distribution based on GPS Measurements
521
Comparison of Three Different Meteorological Datasets ECMWF Met Office and NCEP
528
Radio Occultation Data Processing at the COSMIC Data Analysis and Archival Center CDAAC
536
Verification of CHAMP RadioOccultation Observations in the Ionosphere Using MIDAS
545
Approach to the CrossValidation of MIPAS and CHAMP Temperature and Water Vapour Profiles
551
Author Index
557
Keyword Index
561
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About the author (2003)

Hermann Luhr, Jahrgang 1953, verheiratet, zwei erwachsene Tochter. Wohnt in Schoningen, Niedersachsen. Er schreibt Romane um Ratsel der Vergangenheit oder mysteriose Geschehnisse. Buchveroffentlichungen: "Die Kristallpyramide," 2008 "Verschollene Welten," 2013 Beide Bucher sind auch als E-Book erhaltlich.

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