For data acquisition or other signal prcoessing solutions, there are a couple of typical open-stand COTS approaches. With 3U or 6U OpenVPX, there are a wealth of module for SIG/INT, RADAR Signal Processing, Electronic Warfare, Situational Awareness, and other Mil/Aero applications. There come in rugged air-cooled or conduction-cooled options from several board vendors. OpenVPX is also used in some test/measurement, energy, and research/physics applications. However, VPX tends to have a higher price point than some other architectures. Pixus' OpenVPX solutions are design to reduce costs from chassis platforms to complete systems.
MicroTCA is an excellent platform for signal processing and it typically features lower SWaP-C (Size, Weight, Power, Cost -- although Power is application-dependent) than OpenVPX. However, the ecosystem is smaller, particularly for rugged systems. Let Pixus navigate you to the best solution for your application.
There are also small purpose-built and custom options available. Schedule a call with an industry expert on embedded technologies. We'll be happy to provide the Pros and Cons of the various architectures and guide you to the best option for your application.