Abstract: The anti jamming performance of transceiver relations security of inter-satellite links system, under high precision ranging and limited spaceborne processing capacity， increasing anti-interference part will increase the complexity of the transceiver and the introducing ranging error, so quantitative analysing natural ability against narrowband interference of spread spectrum ranging can provide decision to not need to take anti-jamming measures, under what conditions. It is important for optimizing system design. The paper takes the performance bound of against interference of inter satellite link transceiver as the research target. Researching on the key technical issues by quantitative calculation, analysis, design experiment test method and system, achieved the desired purpose.

Key words: Inter-satellite links, Antijamming, Narrowband, Performance