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- 3ae1e7e5-747f-4c06-a498-8a288a9ce026 definition "The Radio Plasma Imager (RPI) instrument on the IMAGE spacecraft is a low-power radar which operates in the radio frequency bands which contain the plasma resonance frequencies characteristic of the Earth's magnetophere (3 kHz to 3 MHz). RPI can locate regions of various plasma densities by observing radar echos from the plasma that are reflected where the radio frequency is equal to the plasma frequency. By stepping through various frequencies for the transmitted signal, features of various plasma densities can be observed and, by fitting contours and/or magnetospheric models to the features, a 3-D specification of the shape of the magnetosphere can be created. The RPI instrument consists of an electronics enclosure, four 250 m wire antennae with deployers (including switches and couplers), and a z-axis boom canister containing two 10 m lattice boom antennae and two preamplifiers. For more information, see: http://image.gsfc.nasa.gov/rpi/" @default.
- 3ae1e7e5-747f-4c06-a498-8a288a9ce026 id "1654526" @default.
- 3ae1e7e5-747f-4c06-a498-8a288a9ce026 path_id 02c354fd-8e2d-4825-b786-aa4b0782d1d6 @default.
- 3ae1e7e5-747f-4c06-a498-8a288a9ce026 path_id b2140059-b3ca-415c-b0a7-3e142783ffe8 @default.
- 3ae1e7e5-747f-4c06-a498-8a288a9ce026 path_id d8fc8d90-89b6-49c8-aeb7-c45afb8963d8 @default.
- 3ae1e7e5-747f-4c06-a498-8a288a9ce026 path_label "Instruments" @default.
- 3ae1e7e5-747f-4c06-a498-8a288a9ce026 path_label "Radio Wave Detectors" @default.
- 3ae1e7e5-747f-4c06-a498-8a288a9ce026 path_label "Solar/Space Observing Instruments" @default.
- 3ae1e7e5-747f-4c06-a498-8a288a9ce026 prefLabel "RPI" @default.
- 3ae1e7e5-747f-4c06-a498-8a288a9ce026 reference "" @default.
- 3ae1e7e5-747f-4c06-a498-8a288a9ce026 tag "Instruments" @default.