Frequency diversity array synthetic aperture radar high resolution and wide swath imaging method
A technology of frequency diversity array and synthetic aperture radar, which is applied in the field of radar, can solve problems such as the inability to realize wide swath scene imaging, and achieve the effects of reducing complexity, simplifying design, and improving spectrum structure
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[0033] The embodiments and effects of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0034] refer to figure 1 , the application scenario of the present invention is: a high-speed moving low-orbit satellite is used as a radar platform, the platform height is H, and the moving speed is v. The frequency diversity array can be equivalent to a one-dimensional equidistant linear array, the number of array elements is N, the axis of the array is parallel to the direction of radar movement, and the pulse repetition frequency of the array transmitting signal is f r , the transmit carrier frequency of the nth antenna is f n . The antenna beam points to the ground observation scene directly on the side of the array, and the width of the observation scene is the surveying and mapping bandwidth. W g express. The azimuth resolution required by the system is ρ a , the mapping bandwidth is W g , the maximum unambiguous di...
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