The study of ionospheric scintillation factors for geodetic-type receivers is one of the key approaches to achieving dense ionospheric scintillation monitoring. While several geodetic-type ionospheric scintillation factors have been developed, the lack of open-source platforms for calculating these factors limits their promotion and application. To address this, this paper develops a Matlab-based software for multi-GNSS ionospheric scintillation index calculation and analysis, named as M_ISSION. The software is designed for geodetic GNSS receivers with 30s-sampling interval. The main features of this software are as follows. (1) It supports the calculation of five scintillation factors, including \({\sigma }_{\phi f}\) , ROTI, IAATR, AATR, and DIXSG. (2) It can process the observations from four GNSS systems, i.e. GPS, GLONASS, Galileo, and BeiDou. (3) It can perform temporal and spatial disturbance analysis based on scintillation factor calculation results. The software has a clear interface and is user-friendly. To verify the accuracy and precision of this software, long term GNSS observations are collected from the high-latitude region of Canada, with scintillation monitoring results from ionospheric scintillation monitoring receiver (ISMR) as a reference. The accuracies of the \({\sigma }_{\phi f}\) , ROTI, IAATR, and AATR factors calculated by the software are evaluated and proved with the following aspects, i.e. the scintillation amplitude, the scintillation event occurrence rate. Furthermore, the DIXSG index, derived from the software, is analyzed by comparing it with the Interplanetary Magnetic Field (IMF) Bz component, the Dst index, and the regional ROTI grid. This analysis aims to validate its effectiveness in representing the spatio-temporal characteristics of regional ionospheric disturbances. This software is expected to provide technical support for the promotion and application of various geodetic-type scintillation factors.
