Status of GRACE-FO accelerometers and of the future accelerometer development for next gravity missions

Bruno Christophe1, Bernard Foulon1, Françoise Liorzou1, phuong-Anh Huynh2, Vincent Lebat2 and Damien Boulanger2, (1)ONERA French Aerospace Lab, Palaiseau Cedex, France, (2)ONERA, the French Aerospace Lab, Châtillon, France