Plant diversity of trampling disturbance Kobresia humilis community in Naqu, Tibet;

Considering the principle of radar jamming and the theory of image disposal,a new evaluation method of barrage jamming effect on ISAR based on the concept of equivalent number of looks(ENL) is proposed,it evaluates the jamming effect through calculating the difference of two picture s ENL,This method can reflect clearly distortion degree of the jammed target during the whole jamming process.

Based on the concept of correlation coefficient, this paper introduces an evaluation method of barrage jamming effect on ISAR.

Basing on the concept of Euclid distance space, this paper introduces an evaluation technique of barrage jamming effect on SAR.

Based on the quantitative study of the oppressive jamming process,the anti-jamming dynamic evaluation model of the radar networking system is discussed.

This kind of jamming not only could avoid the process of coherent radar for blanket jamming to improve the utility of jamming power,but also own better jamming effect than pure deception jamming.

The feasibility of blanket jamming against space-borne SAR is analyzed.

Research on assessment of noise jamming effect against SAR based on the moving windows detection capability;

This paper discusses the technology about active jamming space-borne synthetic aperture radar(SAR),including noise jamming and deception jamming.