1. The Scatterer of the fear of birth and death.

2. The Mett cross section applies to a point scatterer.

3. Modulated Scatterer Technique (MST) is the key to realize the method .

4. Parameter estimation of radar target scatterer plays an important role in the process of target characteristics analysis and target recognition.

5. Multiresolution analysis is used to estimate the scatterer spacing in biological tissue from the back-scattering signal.

6. In order to reconstruct the shape of scatterer D, we establish the relation between the scatterer and the far field pattern. The relation can be fixed by so called far field operator F.

7. If a scatterer like human head is used , intensity differences among microphones can be obtained efficiently.

8. Mean scatterer spacing( MSS ) is an important parameter for describing the biological tissue microstructure and its ultrasonic scattering characteristics.

9. Average scatterer spacing is one of the important parameters in describing the biological tissue microstructure and its ultrasonic scattering characteristics.

10. In this paper, a point scatterer model is given to simulate scattering of radar echoes by distributed targets such as ships.

11. A three-dimensional linearized elastodynamic inversion method to reconstruct the shape of scatterer has been investigated in this paper.

12. In this paper, a general representation for the radar cross-section of simply face-shaped scatterer with variance in these parameters is given.

13. The calculated field data are applied to reconstruct the contour projections of the scatterer successfully.

14. A general expression for the radar cross section (RCS) of an arbitrarily simple-shaped scatterer is synthesized after analyzing the scattering characteristics of the simple-shaped scatterers.

15. The existence of closed geodesic lines (oscillate loci) is proved. Although there are infinite closed loci on the surface of scatterer, they yield same result in determining SEM poles.

16. The time-spatial cross-correlation coefficient of the intensity fluctuation of the speckle is calculated for three surface correlation in ease of moving weak scatterer.

17. A new method for analyzing the Radar Cross Section (RCS) of a complex scatterer is put forward in the paper , which is a method of frequency characteristic extrapolating .

18. As for the deconvolution method used in estimation of actul scattered signal of deep scatterer in inhomogeneous soft tissue, the impulse response of transmission medium is a key .

19. This paper studied the lateral displacement-measurement technique by using the laser Doppler effect of the moving grating which acted as a scatterer.