All band GNSS receiver

摘要

One embodiment of the present invention provides a signal-recording system. During operation, the system receives a plurality of radio frequency (RF) signals, separates the RF signals to obtain a first group of RF signals in a first RF band and a second group of RF signals in a second RF band, and simultaneously down-converts the first group of RF signals to a first group of low intermediate-frequency (low-IF) signals in a first IF band and the second group of RF signals to a second group of low-IF signals in a second IF band. The system further converts the first group of low-IF signals and the second group of low-IF signals to the digital domain, and simultaneously processes all of the converted low-IF signals.

主权项

1. A method, comprising:
receiving a plurality of radio frequency (RF) signals; separating the RF signals to obtain a first group of RF signals in a first RF band and a second group of RF signals in a second RF band; simultaneously down-converting the first group of RF signals to a first group of low intermediate-frequency (low-IF) signals in a first IF band and the second group of RF signals to a second group of low-IF signals in a second IF band; combining the first group of low-IF signals and the second group of low-IF signals to produced a combined low-IF signal; converting, using an analog-to-digital converter (ADC) module, the combined low-IF signal to digital domain to obtain a combined digital signal; and processing the combined digital signal, which involves applying digital filters to the combined digital signal to produce a separate output signal from each digital filter's output.