Study Of Spread Spectrum Receiver

This paper describes a spread spectrum receiver, which is equipment in self-determination outer measuring systems. It consists of two parts: fast capture and track systems. Its main function is receiving capture scout demodulation and transmit spread spectrum signal coming from the objects. The purpose of fast capture is getting the return spread spectrum signals immediately, and then, track channels start tracking and demodulating the signals. In the paper, the modules of capture and track are both completed by FPGA. A large scale FPGA chip integrated many special chips together, which makes the whole system integrated and compact. Moreover, using DSP to write the control words for the usual interface. The above-mentioned measures make the spread spectrum receiver realized flexibly. The experiments imply the scheme accurate and feasible.