The invention provides a distributed multi-site data synchronous acquisition method and
system based on a
white rabbit technology, and relates to the field of
radar data acquisition, and the method comprises the steps: carrying out the data interaction between a WR switch and a WR node through an
optical fiber based on the
white rabbit WR technology, so as to enable the WR node to output two paths of coherent 10MHz signals and PPS signals; the PPS
signal is sent to a
data acquisition board card as a reference
clock, and the 10MHz
signal is sent to a
clock power division circuit to divide a first path of
target signal and a second path of
target signal; the first path of
target signal is sent to the FPGA as a
system operation
clock, and the second path of target
signal is sent to the clock generation
chip circuit to generate an ADC sampling clock and a
system reference clock. According to the invention, time and frequency distribution is carried out by using a
white rabbit technology, instructions are synchronously acquired through PPS, distributed multi-site
data synthesis is realized, the target detection capability and the detection distance are increased, and the method is convenient to realize, high in reliability and excellent in performance.