The Deep Space Tt&c Pseudo-code Synchronization Technology Based On Ccsds Research And Hardware Implementation

With the continuous development of deep space exploration, human exploration farther, also put forward higher requirements for aerospace technology. Regenerative pseudonoise range can eliminate channel noise to the ranging of forward link and improve signal quality of return link ranging,the precision of ranging and shorten the the ranging capture time.That very suitable for deep space missions. The Recommendation of CCSDS has cleared method of regenerative pseudonoise ranging applications, the world is also a research and testing in accordance with this standard, regenerative pseudonoise ranging gradually be used for a new deep-space missions,which is trend in deep space technology development.In this thesis, we have researched regenerative pseudonoise system based on the CCSDS deep space monitoring and control system and its hardware implementation, have given T2B and T4B combination of principles and characteristics of simulation analysis, have introduced regenerative pseudonoise ranging process.have given synchronization programs about regenerative pseudonoise,have done functional simulation about ranging code tracking capture and forwarding module.have built FPGA digital signal processing platform for the completion of the regeneration pseudo code ranging tracking system hardware circuit design and debugging, have successfully developed a deep space transponder, and have tested from the transparent forwarding and regeneration forwarding comparison, capture time and ranging jitter for regeneration pseudo code ranging tracking system. The test results show that:Deep space transponder has transparent forwarding and renewable forwarding two pseudo code ranging mode, capture time synchronization and ranging accuracy meet the target requirements.