7、Mach Zehnder heterodyne interferometer for high precision displacement measurement
11、Puts forward a simple method to demarcate the input output characteristic and resolution of the measurement system of heterodyne interference.
15、Photonic RF phase shifters based on OTTD (optical true time delay), heterodyne mixing technique and vector sum technique were introduced. The principles and features were proposed and analyzed.
2、That's a heterodyne receiver.
6、Base on the heterodyne laser Doppler theory, a heterodyne laser Doppler vibrometer (LDV) with fiber structure was designed and implemented.
12、The spectrum form of square-wave controlled laser, optical signal heterodyne detecting device and principle of electrical signal demodulation are considered with emphasis.
17、Sound field and spectra thereof were investigated experimentally by utilizing the heterodyne analysis technique, so that both the screech and the wide-band noise can be recorded and studied.
5、sweep frequency heterodyne-type analyzer
13、The processing method of heterodyne signals combines integer measurement with fraction period measurement, so it has wide dynamic range and high resolution.
3、supersonic heterodyne receiver
10、The rhomb has been used in the CO2 laser heterodyne detection system, and the transfer efficiency is more than 93 %.
4、laser heterodyne acoustic sensor
16、The results indicate that the effects of atmospheric turbulence on the heterodyne receiver at a horizontal path are significant, but the effects at a slant path are much smaller.
14、This paper discussed an opto-heterodyne technique for small-plane-angle measurement with a frequency-stabilized longitudinal Zeeman laser as the light source.
1、separate heterodyne
9、Experiment results are shown with a heterodyne interferometer by using this method to measure the dynamic displacement of a PZT.
8、A heterodyne radio device in which one tube serves simultaneously as oscillator and detector.
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