Method and apparatus for spreading signal acquisition and tracking

The present invention relates to a method and a device which are used for obtaining and tracking the spreading signal. The method comprises the following procedures: receiving the spreading signal; executing coherence integration to the spreading signal in order to obtain the coherence integration result of each coherence integration section; storing the coherence integration result to a memory; executing incoherent accumulation to the coherence integration result from the memory to form a signal strength; comparing the signal strength with the prearranged threshold quantity; and executing a special operation when the signal strength exceeds the threshold quantity. According to the invention, to facilitate that the detecting circuit obtains a higher updating rate and the searching and tracking of the spreading signal are improved, the range of the incoherent integration is continuous and is converted step by step, and a freedom with a larger incoherent section is provided. By using the device according to the