Recent technology enables us to design sophisticated navigation systems and improve the capability of positioning and guidance of aircraft. This development can satisfy increasing demands on the air space capacity and on the economy of the commercial flights. Finally, the influence on the environment is diminished when the time of flight is decreasing, which can be achieved also due to a better navigation solution. This paper introduces the design of the navigation receiver, which benefits from the advanced FPGA technology. The developed receiver consists of the analog RF frontend followed by the IF conversion, ADC, and the DSP part. It possesses the capability to process up to 10 navigation sources together. Then, the navigation solution can profit from the higher number of independently measured data to achieve precise and reliable estimation of an aircraft position. Secondly, this paper presents the idea and experimental solution for an approach-to-landing navigation system. The designed system is based on the TDOA positioning methods accompanied with an ILS transmitting channel, which distributes lateral and vertical trajectory error corrections. This system is one of the possible navigation data source for the previously described multiple source navigation signal receiver.
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