Planetary plasma measurement technology

Plasma is a key element of planetary environment, which is critical for understanding the planetary evolution history and mechanism. The plasma environment is related to the magnetic field and atmosphere status of the planet. The technology of planetary plasma measurement has been made a great progress in the recent several decades. In-situ measurement and remote sensing are mostly applied in the planetary plasma measurement. The typical instrument for in-situ plasma measurement is electrostatic and magnetic analyzer. The remote sensing is mostly relied on the radio-plasma interaction. Here, we review the progress of the planetary plasma measurement, the basic concept and design of typical plasma instrument in the successful missions. These can also offer a prospective on planetary plasma measurement in the near future.