By experiments,this paper analyses and corrects the imaging process of the actual DSA system based on the "equivalent single energy"model,and the results indicate the validity of this method.

the calculating concept was guoted,which of the internal force of the bent structuer in space,when analysing the internal force onsuch as the unit of the complex bent structuer,the relation between the equivalent element length and the assigning modulus,in order to get the certain reckoning and electricity calculating means,and verify by the fact that the example is in progress.

According to the geometry of the bistatic translational invariant SAR,the paper derived a precise bistatic SAR range equation which was consisted of a equivalent monostatic range and a range compensation term and might precisely described the bistatic range history.

Based on the energy equivalence principle, the elastic modulus of Al2O3f/Al composite was predicted by means of the Finite Element Method.

An anisotropic damage tensor is defined from the view of energy and constitutive equations of anisotropie damage for elasticity are derived using the hypothesis of energy equivalence.

The approach of energy equivalent principle is at first introduced inthis paper, and a new method based on the equivalent eigenvalues of the system is also suggested to reduce viscoelastic damping to a visco-damping model.

This paper discusses the limitations of traditional waveform measurement method,puts forward the "energy equivalent"measurement method based on digital receiver and high precision radar wave IF measurement method.