VENμS (Vegetation and Environment New micro (μ) Satellite) is a micro satellite launched in 2017 by the Israeli Space Agency (ISA) and the French Centre National d’Etudes Spatiales (CNES). VENμS is a research satellite containing two very different devices: an electric Hall effect thruster and a multispectral optical camera. This paper focuses on the multispectral camera. The camera provides images at a resolution of 5 m, with a field of view of 27 km, and the orbit of the satellite was chosen to allow us to revisit of each observed site with constant angles every second day. In November 2020, VENμS ended the first phase of its mission. This phase, called VM01, allowed us to provide about 150 accurate time series over selected scientific sites over almost three years. Extensive work was conducted to calibrate the camera and assess the quality of the products. Not everything worked as planned before launch and a large amount of work was necessary to correct some defects of the camera or to improve the geometric registration of images. This article establishes the image quality VM01 final assessment including the presentation of radiometric and geometric calibration methods, the estimation of instrument performances and their associated temporal stabilities and the monitoring activities. In addition, it highlights the whole mechanism of data programming, reception and production. The end of VM01 phase is not the end of the VENμS mission, and a new phase started on a one-day repeat orbit.

Planned to be launched in 2026, the TRISHNA mission (Thermal infraRed Imaging Satellite for High-resolution Natural resource Assessment) aims at providing visible and infra-red measurements with a worldwide coverage, for continents and coastal ocean. During its 5-year mission lifetime, it will acquire signal of the surface-atmosphere system with a 60-meter resolution. With such characteristics, TRISHNA mission can be considered as a precursor for future missions, such as SBG (NASA) or LSTM (ESA/COPERNICUS), with which a synergy has been established to allow a long term data inter-comparison.Resulting from a cooperation between CNES and ISRO, TRISHNA mission will take advantage of two mission centers, in France and in India, to provide users with Level 1C, 2 and 3 products. Based on identical algorithms specifications and products definitions, these ground segments will process and deliver data with Near Real Time demonstration objectives. Indeed, to allow quick decisions, some Level 2 products (for instance water stress indexes) shall be made available to users in less than 12 hours after acquisition.This presentation will give an update of the status of TRISHNA mission, focusing on the details of products which will be provided and their potential application in environmental remote sensing. The French ground segment will also be described to enhance how TRISHNA data will be processed and delivered.