Method and system for parallel frame synchronization detection

The invention discloses a method and a system for parallel frame synchronization detection. The method comprises the following steps of firstly, for the parallel multipath data output by an analog-digital converter of a receiving end, respectively performing branch parallel autocorrelation calculation and branching, and performing parallel cross-correlation calculation for the corresponding frame head data in a frame head sequence locally cached at the receiving end, obtaining the parallel autocorrelation calculation result and the parallel cross-correlation calculation result; then, according to the branching calculation result, dividing the data into an odd path and an even path, initially determining a frame synchronization locking port of the odd path and a frame synchronization locking port of the even path in the output port of the analog-digital converter, and finally, determining the final synchronization locking port according to the corresponding parallel autocorrelation calculation result of the synchronization locking port of the odd path and the synchronization locking port of the even path, and determining a frame synchronization initial position. By the method and the system, parallel frame synchronization detection is realized, and accuracy of frame synchronization detection is improved.