The bit error ratio (BER) of the system over weak turbulence based on adaptive filter is below 10 ~ (-8), which can satisfy the communication requirement.

Making use of large inner capacity and programmable resource of a CPLD chip, a high speed UART with buffer bas been designed to meet communication requirement.

Without a stable and reliable terminal test system, communication requirement of users can not be satisfied well, and communication quality of users can not be quaranted.