PDS: The Planetary Atmospheres Node
- Sensor I-V sweeps (at least ±50 V range)
- Low frequency (f: 0.05-10 Hz) E-field power
- E-Spectra measurements up to 2 MHz
- White noise (50 kHz-2 MHz) sounding
The LangMuir Probe and Waves (LPW) instrument utilizes cylindrical sensors on two 7-meter booms to assure one is always outside the spacecraft wake. Characteristics of the instrument are:
Measurement Objectives
LPW measures electron density (ne) and temperature (Te) in the upper atmosphere and electric field wave power at low frequencies - important in determining ion heating. The LPW data is used to locate the ionopause, derive recombination rates and provide an estimate of Poynting flux into the ionosphere and ionosphere heating rates (with MAG). Wave spectra of naturally emitted and actively simulated Langmuir waves are used to calibrate density measurements.
Useful Mission Documents
Archive Bundle Contents
Selecting and Requesting Data - The following index can be downloaded and edited to contain data that conform to your needs. This allows you to understand the scope of the data set and to tailor your request for specific products.
Citing Data Sets for Publications (to be developed)
Other Useful Products for Interpreting the Data
Measurement Objectives
LPW measures electron density (ne) and temperature (Te) in the upper atmosphere and electric field wave power at low frequencies - important in determining ion heating. The LPW data is used to locate the ionopause, derive recombination rates and provide an estimate of Poynting flux into the ionosphere and ionosphere heating rates (with MAG). Wave spectra of naturally emitted and actively simulated Langmuir waves are used to calibrate density measurements.
Useful Mission Documents
Mission Description
Spacecraft Description
Software Interface Specification (SIS) - Description of the instrument and data structures
Calibration Document - Description of calibration methods
Spacecraft Description
Software Interface Specification (SIS) - Description of the instrument and data structures
Calibration Document - Description of calibration methods
Archive Bundle Contents
Documentation - Directory containing the document collection, which includes references to refereed journals using this instrument, and information about calibration and explanation of data structures.
Raw Data - Directory containing the raw data files
Calibrated Data - Directory containing the calibrated data files
Derived Data - Directory containing advanced products
Raw Data - Directory containing the raw data files
Calibrated Data - Directory containing the calibrated data files
Derived Data - Directory containing advanced products
Selecting and Requesting Data - The following index can be downloaded and edited to contain data that conform to your needs. This allows you to understand the scope of the data set and to tailor your request for specific products.
As-flown Index - List of actual observations in order of
acquisition
Requesting Data You will need to upload your edited file
Requesting Data You will need to upload your edited file
Citing Data Sets for Publications (to be developed)
Other Useful Products for Interpreting the Data
References - Publications by team members
Other Potential Relevant Data - Data that may be relevant from missions other than MAVEN
SPICE - Archived MAVEN SPICE ancillary data providing observational geometry (positions, orientations, instrument pointing, time conversions, etc.) are available from the PDS NAIF Node.
Other Potential Relevant Data - Data that may be relevant from missions other than MAVEN
SPICE - Archived MAVEN SPICE ancillary data providing observational geometry (positions, orientations, instrument pointing, time conversions, etc.) are available from the PDS NAIF Node.
