In this letter, we present a method to design an elevation beam pattern mask for spaceborne synthetic aperture radar (SAR) to reduce the range ambiguity. The proposed two-way elevation beam pattern mask, which require...
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In this letter, we present a method to design an elevation beam pattern mask for spaceborne synthetic aperture radar (SAR) to reduce the range ambiguity. The proposed two-way elevation beam pattern mask, which requires relatively low sidelobe levels only in the direction of strong range ambiguous echoes, can be highly suitable for enhancing the range ambiguity to signal ratio (RASR). The power levels of the different ambiguous echoes are estimated based on the backscattering coefficient model and satellite geometry. To meet the two-way beam pattern mask, both transmit and receive beam patterns are synthesized simultaneously through the minimax algorithm. To confirm the effectiveness of this mask design method, the RASR performance is evaluated by using various swaths.
With the development of artificial intelligence, the game algorithm between humans and machines has also attracted the attention of many people. Among them, the algorithm of chess has fascinated countless programmers....
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With the development of artificial intelligence, the game algorithm between humans and machines has also attracted the attention of many people. Among them, the algorithm of chess has fascinated countless programmers. The author has a lot of experience in the algorithm of six chess due to the influence of computer game competitions. For this reason, I will introduce some of these algorithms, such as maximum and minimum values. algorithm, pvs algorithm.
Suppose we are given two disjoint linearly ordered subsets A and B of a linearly ordered set C, say A = {a1 2 m} and B = {b1 2 n}. The problem is to determine the linear ordering of their union (i.e. to merge A and B)...
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