Research On Simulative Source Of Intelligentized Data In Space Laser Communication

Space laser communication is one of the most competitive technical approach in spacial information transmission,which bears the advantage of broadband,high speed,strong anti-intercept and anti-interference ability and the light small,etc.Before develop an integrated information system for demonstration and experiment, in order to achieve a separate test of laser communication systems, there need to simulate various loads and bit error rate test. Light, embedded, intelligent and high-speed simulate data sources is essential. This paper developed a FPGA-based intelligent simulative data source, it will not only make multi-channel video, audio signals to composite into one high-speed data streams to simulate a variety of payloads (SAR, visible, infrared), which makes the speed of communication signal1.08Gbps. And the pseudo-random sequence can be achieved transmission speeds of up to3Gbps, for the bit error rate test. High-speed pseudo-random sequence which is the rate-smart adjustable, rate range750M to3G. The type of data transmission can be selected, such as:video and audio serial data stream, pseudo-random sequences, simulative data source.