D
Daisuke Sakaizawa
Researcher at Japan Aerospace Exploration Agency
Publications - 28
Citations - 256
Daisuke Sakaizawa is an academic researcher from Japan Aerospace Exploration Agency. The author has contributed to research in topics: Lidar & Spectrometer. The author has an hindex of 8, co-authored 26 publications receiving 242 citations.
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Journal ArticleDOI
Development of 16 μm continuous-wave modulation hard-target differential absorption lidar system for CO_2 sensing
Shumpei Kameyama,Masaharu Imaki,Yoshihito Hirano,Shinichi Ueno,Shuji Kawakami,Daisuke Sakaizawa,Masakatsu Nakajima +6 more
TL;DR: It is shown that a stable CO(2) concentration measurement corresponding to a fluctuation of 4 ppm (rms) has been achieved in 32 s measurement intervals and the 1 km path.
Journal ArticleDOI
Feasibility study on 16 μm continuous-wave modulation laser absorption spectrometer system for measurement of global CO_2concentration from a satellite
Shumpei Kameyama,Masaharu Imaki,Yoshihito Hirano,Shinichi Ueno,Shuji Kawakami,Daisuke Sakaizawa,Toshiyoshi Kimura,Masakatsu Nakajima +7 more
TL;DR: A feasibility study is carried out on a 1.6 μm continuous-wave modulation laser absorption spectrometer system for measurement of global CO(2)concentration from a satellite and the systematic errors caused by unwanted backscattering from background aerosols and dust aerosols can be reduced to less than 0.26%.
Journal ArticleDOI
Ground-based demonstration of a CO2 remote sensor using a 1.57μm differential laser absorption spectrometer with direct detection
TL;DR: In this article, a 1.57-µm laser remote sensor using differential absorption spectrometry is developed as a candidate for the next space-based mission to observe atmospheric CO2 and/or other trace gases.
Journal ArticleDOI
Performance improvement and analysis of a 1.6 μm continuous-wave modulation laser absorption spectrometer system for CO 2 sensing
Shumpei Kameyama,Masaharu Imaki,Yoshihito Hirano,Shinichi Ueno,Shuji Kawakami,Daisuke Sakaizawa,Masakatsu Nakajima +6 more
TL;DR: The process to achieve this highly specific measurement of small fluctuations in CO(2) corresponding to a precision of 4 parts per million (ppm) with a measurement interval of 32 s is presented.
Journal ArticleDOI
An airborne amplitude-modulated 1.57 μm differential laser absorption spectrometer: simultaneous measurement of partial column-averaged dry air mixing ratio of CO 2 and target range
Daisuke Sakaizawa,Shuji Kawakami,Masakatsu Nakajima,Tomoaki Tanaka,Tomoaki Tanaka,Isamu Morino,Osamu Uchino +6 more
TL;DR: In this paper, the authors demonstrated simultaneous measurements of the partial column-averaged dry air mixing ratio of CO2 and target range using airborne amplitude-modulated 1.57 μm differential laser absorption spectrometer (LAS).