###### Abstract
The data obtained from GHGSat devices have already demonstrated their significance and relevance in terms of searching for point sources of pollution. The GHGSat-D satellite's mass is 15 kg, its spatial resolution is 50 \(\times\) 50 m\({}^{2}\) and it has a 12 \(\times\) 12 km\({}^{2}\) coverage [20]. The IKFS-2 FTIR spectrometer operating onboard the Meteor-M 2 satellite is described in [21]; it allows measurements of the gas composition of the atmosphere with a maximum bandwidth of up to 2500 km (with a point step of 100 km). The IKFS-2 FTIR spectrometer's instantaneous field of view (IFOV) is 40 mrad (35 km), its spectral range is 660-2000 cm\({}^{-1}\) and its mass is about 50 kg [22]. The GaoFen-5 satellite-II (GMI-II) uses spatial heterodyne spectroscopy (SHS) for quantitative monitoring of atmospheric greenhouse gases [23]. GaoFen-5 was developed by the China Aerospace Science and Technology Corporation, and has a liftoff mass of 2700 kg and a design life of 8 years [24]. GMI-II uses four IR bands for O\({}_{2}\), CO\({}_{2}\) and CH\({}_{4}\) in the visible and NIR spectral regions. The instantaneous spatial resolution is 10.3 km and the spectral resolution is 0.6 cm\({}^{-1}\) for the O\({}_{2}\) band and 0.27 cm\({}^{-1}\) for the CO\({}_{2}\) and CH\({}_{4}\) bands. The devices for measuring greenhouse gases discussed above have properties that make them useful for resolving a variety of issues in remote sensing of the Earth's properties. However, the creation of instruments for spacecraft in the CubeSat design is currently a critical endeavor. Due to its size and weight, most sensing equipment cannot be fitted in a CubeSat spacecraft. Even a low-resolution FTIR spectrometer such as the Bruker EM27/SUN [25] cannot be placed in the CubeSat. MeznSat-A is a 3U CubeSat for monitoring greenhouse gases using short-wave infrared (SWIR) spectroscopy. The spacecraft is equipped with an Argus 2000 spectrometer. The spectral range of the grating spectrometer is 1.0 to 1.65 \(\upmu\)m, and its spectral resolution is 6 nm across 100 spectral channels. In [26], a ground-based prototype of a multichannellaser heterodyne spectroradiometer for measuring CO\({}_{2}\) and CH\({}_{4}\) molecular absorption with an ultra-high spectral resolution of 0.0013 cm\({}^{-1}\) for a 2U CubeSat was developed. [PERSON]'s advantage [27] can produce a relative improvement in the signal-to-noise ratio (SNR) in FTIR spectrometers. Therefore, creating a compact FTIR spectrometer for the CubeSat platform is a crucial task for greenhouse gas remote sensing. Today, many CO\({}_{2}\) measurements are based on NDIR (non-dispersive infrared) spectroscopy [28; 29]. Devices of this type are simple, compact and quite cheap, but their spectral resolution is quite low (the filter bandwidth is more than 100 nm) [30]. FTIR spectrometers allow the recording of spectra in a wide range with a high resolution. This makes it possible to measure several greenhouse gas concentrations [31] simultaneously. A comparison of FTIR and NDIR measurements has shown a smaller variance in FTIR measurements [32]. This paper is devoted to the analysis of using infrared spectroscopy for remote measurements of greenhouse gas concentrations and the development of a compact, low-resolution FTIR spectrometer for the CubeSat spacecraft. We focus on CubeSat satellites because they are the cheapest to launch into space as an additional payload. Monitoring should be carried out by CubeSat spacecraft to solve the task of remote sensing in the field of greenhouse gas emissions.