Inlet flow distortion measurements are usually carried out using discrete pressure and temperature rakes. These devices are however poorly adapted to highly distorted flows where non-intrusive methods could be better suited. Well known non-intrusive methods usually require seeding particles, the use of which can be troublesome during engine operation and can account for significant release of fine particles in the atmosphere. The main objective of the current topic is to design, develop a non-intrusive, seedless measurement system, set-up and validate it at laboratory level and provide a demonstrator which will then be tested on a realistic aerodynamic test rig. Please refer to the full topic descriptions document published in this call.