Application of Dual Frequency Comb Method as an Approach to Improve the Performance of Multi-Frequency Simultaneous Radiation Doppler Radar for High Temperature Plasma Diagnostics oleh Tokihiko Tokuzawa, Shigeru Inagaki, Michiaki Inomoto, Akira Ejiri, Tatsuhiro Nasu, Toru Ii Tsujimura, Katsumi Ida