| 摘要 |
A digital range correlator is disclosed which provides a correlation scheme which can be mechanized and produced repeatedly with minimal need for offsets and reduced power supply sensitivity. CCDs are eliminated and the need for channel-to-channel matching is obviated. The digital correlator (10) of the present invention includes an analog-to-digital converter (12) for converting an input analog signal into a digital signal to provide a plurality of digital words one corresponding to each range gate. An accumulator (22) is provided for summing the bits of each digital word to provide an accumulated sum for each range gate. The digital sums are compared in a processor (26) to identify the range gate of the target. In a specific embodiment, the invention allows for the incorporation of a correlation code. |
