The fluxgate magnetometer of the Low Orbit Pearl Satellites (LOPS): overview of in-flight performance and initial results

Abstract. The Low Orbit Pearl Satellite series consists of six constellations, with each constellation consisting three identical microsatellites that line up just like a string pearls. first satellites were launched on 29 September 2017, an inclination ? 35.5? and 600 km altitude. Each satellite is equipped fluxgate magnetometers measure the in situ magnetic field its low-frequency fluctuations Earth's low-altitude orbit. triple sensor configuration enables separation stray effects generated by spacecraft from ambient (e.g., Zhang et al., 2006). This paper gives general description magnetometer including instrument design, calibration before launch, in-flight calibration, performance, initial results. Unprecedented spatial coverage resolution measurements allow for investigation dynamic processes electric currents ionosphere magnetosphere, especially ring current equatorial electrojet during both quiet geomagnetic conditions storms. Magnetic LOPS could be important studying method to separate their contributions Magnetosphere-Ionosphere (M-I) system.