Structure of Doppler wind lidar based on F-P standard utensil and detection method thereof
A technology of Doppler wind measurement and laser radar, which is applied in the direction of measuring device, electromagnetic wave reradiation, radio wave measurement system, etc., can solve the problems of limited application range, unsuitable for spaceborne platform load, etc., and achieve the improvement of detection height, Measurement accuracy covers spatial extent, effects of high spatial and temporal resolution
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[0045] see attached figure 1 , the meanings of the symbols are: 1, mirror, 2, filter, 3, beam splitter, 4, right angle reflecting prism, 5, converging lens, 6, fiber, 7, two-in-one fiber coupler.
[0046] Typical Results of Measurements
[0047] The measurement of the transmittance curve of the double F-P etalon is obtained through the control of its cavity length by the CS100 control subroutine of the system operation control software. Figure 4 It is the transmittance curve of the double F-P etalon obtained by the cumulative average measurement of 500 pulses at 19:04 on April 27, 2005. The spectral center interval between channel 1 (solid circle) and channel 2 (dashed circle) is 228.2 MHz, the half-widths are 205.0MHz and 224.3MHz, respectively. The solid curve and the dashed curve are the corresponding fitting curves of the two channels, respectively, and their peak transmittances are 73.7% and 70.8%, respectively.
[0048] Due to the drift of the optical unit and electro...
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