Furthermore, a high-accuracy algorithm of heading error compensation is presented, which is based on the compass deviation decomposition and the datum axis of orthogonal correction.

Integrated heading system based on differential magnetic compasses;

Based on Granger Causal test and ADF test,a VAR model was developed and the impulse response function and variance decomposition method were employed for quantitative study of the relationships between the industrial output,industrial wastewater effluent,and technical efficiency of industrial water utilization.

On the base of the model,it analyzes the dynamic effects of the relationship between the highway and economic development by the pulse response function and the variance decomposition.

On the basis of the result unit root test, we established the VAR model and practice co integration test, and constituted the ECM and carry out Granger causality test, and analyzed series of hard wheat future and spot price by using variance decomposition and impulse responses function.

In addition, based on the concept of numerical dispersion of difference solution to the linear kinematic wave equation modeling the physical dispersion of the diffusive wave equation at some condition, a flood routing method with predictio.

Analysis of screw tuner based on wave equation finite difference method;

In this paper, the wave equation finite difference method is analyzed in XYZ system and the influence of perfect conductor surfaces and edges on electromagnetic fields is also discussed.

The paper proposes a new differential detection method of PCM/DQPSK signal.