基于公钥基础设施的Hadoop安全机制设计

为了满足运载火箭遥测系统集成验证的测试需求，同时提升测试设备的通用性，降低测试设备的研制成本，本文采用面向信号的设计思想，设计了一种简洁高效的遥测系统自动化测试平台。该测试平台基于PXI总线开发，通过采取多路复用开关与输入输出模块相结合的设计思路，可实现多参数的巡检测试及同时测试，使测试平台具有较好的通用性和灵活性，在硬件设备不做更改的前提下可适用于多型运载火箭的测试需求，同时研制成本大幅降低；通过接收解析箭上遥测数据，测试过程无需人工干预，实现了自动化测试与自动化判读。通过试验验证，该测试平台工作稳定，能较好的满足多型运载火箭遥测系统集成验证测试需求，同时该平台的设计方法为同类测试系统的设计提供了一种思路。

Design of security mechanism in hadoop based on PKI

In order to meet the testing requirement of launch vehicle telemetry system, a automatic test platform of the telemetry system is designed. Through the combination of multiplexing switches and I/O module, the platform can be used to realize inspection testing and concurrent testing for multiple parameters, which makes the platform have good flexibility. By receiving and resolving the telemetry data of launch vehicle, it truly forms a automatic system to test and verdict automatically. The test platform has been applied in the integrated test of multi-type launch vehicle telemetry system, and has achieved good application effect.