In order to detect the sea sediment heat conductivity efficiently and accurately and solve the problems of the currently used huge equipment that with low precision and unhandy operation and maintenance,a new system consisting of many separate subminiature heat conductivity in-situ detection probe and gravity sampling equipment is developed.

The result is fine, which shows that the data snooping method with the new weighting function can locate all the measurements with blunders of the framework accurately and effectively in the case that the accuracy of distance measurements are different and a few blunders coexist.

Reliability analysis and data snooping are important contents in quality control of adjustment system.

By considering the quantitative relation between the residual error and the true error,this paper focuses on the data snooping and the iterative methods of weight defining for the robust estimation which are used to detect gross error.

By controlling the diffusion of exploratory message with optimal hops in free space model, the energy consumption can be more efficient.

At first the article analyses directed diffusion routing, then poposes a way which uses nodes’ regional information to control the initial interest diffusion and the diffusion of exploratory message with optimal hops.

Based on the parsing of Vehicle-Infrastructure Integration probe data collection process and basic rules,a Ⅶ probe data collection simulation methodology through the COM interface of a commercial traffic simulator,named as VISSIM,was put forward.