The NASA Cyclone Global Navigation Satellite System (CYGNSS) Mission
The CYGNSS observatories are currently in Phase B development. In parallel with the hardware development, a detailed end-to-end simulator has been constructed in software that is designed to reproduce the expected measurements made on orbit by CYGNSS and, in particular, when it overflies TCs. The simulator includes realistic nature run models of the TC, realistic representations of the orbital geometries and measurement configurations of the GPS transmitting satellites and the CYGNSS receiving satellites, physically based electromagnetic scattering models for the surface interaction, and accurate simulations of the on-board signal processing performed by CYGNSS to form the Level 1 science data products – the Delay Doppler Maps (DDM). Wind speed retrieval algorithms are in development to make full use of the information contained in the DDMs.
An update on the current status of the mission will be presented, with emphasis given to the wind speed retrieval algorithm development and its predicted performance, and to the expected spatial and temporal sampling properties of the retrieved winds.
Supplementary URL: http://cygnss-michigan.org