RECTANGLE Sp. z o.o. is a hi-tech SME established to develop innovative products and solutions dedicated to autonomous transport & logistics, aviation, critical infrastructure, public security & safety and defence. The RECTANGLE team specializes in the development of navigation algorithms and software, radio navigation systems, inertial navigation systems, active location systems based on radar, optical or sound, RF interference & jamming detection and mitigation, sensor & data fusion, command & control on-board systems, FPGA technology, Systems-on-a-Chip, electronic design and telecommunication solutions. The RECTANGLE team was involved in a large number of initiatives distinguished by a high innovation potential. Special attention should be paid to projects concerning the development of electronic devices dedicated to navigation and telecommunication purposes. In addition to working on the hardware, the RECTANGLE also developed embedded software as well as sensor fusion-based navigation algorithms, including those based on Artificial Intelligence methods.