The CHAOTIQ project proposes the theoretical and experimental study of chaotic vibrating reverberation chambers (CVRC) (generally called VIRC in the literature) made of a metallic tent attached on a light frame. This low-cost test facility (compared to existing faradized enclosures) has the advantage of being quickly removable and mobile, which generates a major change compared to the current situation: the displacement of the test facility towards the system to be tested. The objective is to prove that it is the first “2-in-1” electromagnetic test facility able to be used both as a “low uncertainty” RC and as a “virtual” anechoic chamber for antenna characterization, stealth measurement (RCS, ISAR) and electromagnetic compatibility (EMC) applications. Proposed in the early 2000s, this test facility has been the subject of little academic work since, apart from its inventor (F. Leferink) and some rare teams at the international level (including XLIM and the CRT CISTEME). Many fundamental questions linked to their functioning therefore remain to be clarified. In particular, the particular expected performance of CVRCs that we intend to highlight and the original applications planned within the framework of this project have not been considered until now (apart the EMC tests). Indeed, the stirring technique achieved by the continuous movement of the entire canvas over the time should theoretically allow two particularly interesting properties to be accessed : • the direct path between the transmitting antenna and the object to be tested (receiving antenna, target for stealth measurements, etc.) is likely the only invariant path over time within the CVR, which would help to filter all the indirect paths and therefore to make it possible to obtain a “virtual” anechoic chamber (at the cost of reproducing the measurement for a sufficient number of independent states of the CVRC); • the probable opportunity to obtain in a CVRC a very large number of uncorrelated realizations (potentially far greater than the number obtained in a “classic” parallelepipedical RC) making it possible to obtain a “low uncertainty” RC (potentially proportional to the time acquisition) while shortening the testing time compared to conventional RCs. During the project, emphasis will be placed on the development of experimental conditions, theoretical concepts, post-processing methods and determination of measurement uncertainty during 1) characterization (radiation pattern, efficiency, ...) of miniature and / or integrated and / or non-connectorized antennas, an emerging theme in the context of antenna measurement, in particular for future 5G millimeter bands, 2) measurement of RCS in particular at low frequency (when the absorbers in traditional anechoic chambers are only partially effective) of targets having a spread response over time and 3) EMC radiated immunity tests carried out in a changing environment as a function of time. The proposed project which respects the dual civil / military nature of the ASTRID AAP is likely to have repercussions in the future on related themes in RC such as broadband characterization of material or shielding or in bioelectromagnetism. The project consortium draws on the skills of the XLIM laboratory (project coordinator) and the CRT CISTEME in terms of characterizing the performance of RCs, design and characterization of antennas, RCS measurements in anechoic and reverberant environment, optimization of EMC tests as well as the know-how of J. DUBOIS SAS in the design of CVRCs and their associated stirring processes.