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This part is stress test. We set the image payload size of each data packet to 1KB and increase the rate of sending SAR image data packets from 0 to 24Kpps in 2Kpps steps.
When the data transmission reaches about 16Kpps, the performance bottleneck of SARDDS interface has been reached. When the data transmission reaches about 16Kpps, the image payload information transmission rate (Rimage) is: 16MB/s. According to statistics, the size of each SAR image (Simage) is basically below 500KB. Therefore, it can be calculated that the refresh rate (Rrefresh) of the displayed SAR image in the SAR information display module is about: 32fps. As we all know, the minimum frame rate of smooth video viewed by human eyes is 24 frames per second (fps). This SARDDS interface supports the transmission of SAR image data to the SAR information display module for display at a maximum frame rate of 32 fps, which can ensure the smoothness of SAR image display. This shows that the data transmission bandwidth of the designed SARDDS interface is sufficient to meet the transmission of SAR image data.
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IEEE/ICACT20230222 Slide.14
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