In some industrial GPS receivers, there was a FPGA, a very capable ADC, and a PLL. Logic was split between the analog incoming section and the digital processing section. Maxim components were used frequently as it they had excellent engineering support (sampling esp.) from the vendor. IIRC, there were Flash EEPROMs rated for 10k block writes (only!) but were reliable up to low 100k's.
In some industrial GPS receivers, there was a FPGA, a very capable ADC, and a PLL. Logic was split between the analog incoming section and the digital processing section. Maxim components were used frequently as it they had excellent engineering support (sampling esp.) from the vendor. IIRC, there were Flash EEPROMs rated for 10k block writes (only!) but were reliable up to low 100k's.
PS: Alum of Trimble Nav Ltd radio group.