Calibration of electron density obtained from whistler inversion with in-situ satellite measurements

The equatorial electron density obtained from whistler inversion has long been regarded as an effective tool for monitoring the plasmasphere from ground based measurements. However, as these inversion methods are based on various models, it is essential to validate them through comparison with in-situ density measurements. To date, no such comparison was made, mostly because no suitable in-situ was available.