空间激光通信中智能高速模拟数据源的研制

Research on simulation data source of intelligent and high-speed in space laser communication

在开展综合信息系统演示试验前,为了实现激光通信系统的单独测试,需模拟各种载荷及误码率的测试。轻型、嵌入式、智能高速的模拟数据源必不可少。研制了一种基于FPGA的智能化模拟数据源,它不仅将多路视频、音频信号复合成一路高速数据流来模拟各种有效载荷(SAR,可见光,红外),它使得通信信号的速度达1.08 Gbps。而且可实现伪随机序列的传输,速度可达3 Gbps,用于误码率测试。其中高速的伪随机序列是速率智能可调节,速率范围750 Mbps到3 Gbps。数据传输的类型可选择,如:视音频的串行数据流,伪随机序列,模拟数据源。

In order to achieve a separate test of laser communication systems, various loads and bit error rate test need to be simulated. Light, embedded,intelligent and high-speed simulation data sources are essential. A FPGA-based intelligent simulation data sources were developed, it made multi-channel videos and audio signals to composite into one high-speed data streams ,which simulated a variety of payloads （SAR, visible, infrared） , and the speed of communication signal is 1.08 Gbps. And the pseudo-random sequence can be achieved, transmission speed is 3Gbps, which is used for the bit error rate test. High-speed pseudo-random sequence is adjustable in the rate-smart,rate range is from 750 Mbps to 3 Gbps. The type of data transmission can be selected, such as video and audio serial data stream, pseudo-random sequences and simulation the data source.