The total electron content derived by existing ground-based GNSS (Global Navigation Satellite System) receivers is used to construct a network of space buoys for real time monitoring traveling ionospheric disturbances triggered by tsunami waves. This space buoy network shall act as a tsunami early warning system confirming the tsunami originpropagation.

IDEASSat is a 3U CubeSat comprising of self-developed ionospheric payload, electrical power, command & data handling, structural,thermal subsystems, as well as COTS UHF, S-band communications,attitude determinationcontrol subsystems. Following successful integration, test, launch,activation, the returned flight data was used to verify system designworkmanship, providing useful information for design refinements for future NCU spacecraft.

Compact Ionospheric Probe (CIP) is an all-in-one plasma sensor to optimizely install on CubeSat platform with sampling rate up to 1,024 S/s to measure ionospheric plasma concentrations, velocities,temperatures over a wide range of spatial scales in a time-sharing way.

A prototype propulsion control system for CubeSat is designed. For the demonstrationpreliminary dynamic verification of the system on earth we use four thrusters to perform the yawpitch controleach thruster provides a thrust of 600mN. The result shows that the propulsioncontrol system both have good performance.

The purpose of this project is building a multi-function communication experimental payload for a CubeSat named PEARL (Propagation Experiment using kurz-Above-band Radio in Low earth orbit）. The payload comprises Software-Defined Radio (SDR) Platform, K/Ka-Band RF frontendantennas.

PEARL is a 6U CubeSat with a Ku/Ka-band Communication Payload (KCP) to provide a high throughput satellite communication networka CIP to monitor connection quality of global satellite communicationsoutage of navigation signals.

"NCU/GPSARC developed a 1DVAR RO data retrieval system, which retrieves the FORMOSAT-7 (FS7) RO refractivity to obtain atmospheric temperaturemoisture profiles. The high vertical resolution atmospheric soundings are comparable with radiosondes. The system is one of the components of the TROPS,it is operationally performed by CWB TACC. Based on Chen et al. (2020), we further apply the nonlocal RO operator with FS7 data in an advanced hybrid data assimilation system for the detection of tropical cyclogenesis. The processing systemdetection platform have been implemented at GPSARC."

This technology is developedcontrolled by the National Central University, Central Weather BureauAcademic Sinica. The processing system is housed at NCUtechnical support is served in Taiwan to the global. The data is acquiredpreprocessed by CWB,followed by the invention of the cloud properties retrieval algorithm package by NCU. The final retrieval algorithm package is evaluatedenhanced by the local observation from Academic Sinica. Therefore, the processing system can be assured for its performancereliability. This state-of-the-art technology has been recognizedapproved by AGU JGR-Atmospheres, the leading journal in Q1 level of the related research community by the anonymous peer reviewing in June 2020.

Active phased arrays of antennas suffer from fabrication discrepancy at mmW frequencies for 5G/B5G. To accelerate the piece-by-piece calibration procedure, a bottleneck to cause high fabrication cost, a highly efficient electronic-scan based technique is developed. By avoiding the time-consuming mechanical probing, the developed technique is particularly applicable to production line operation to

mmW 5G/B5G/6GLEO satellites use large active antenna arrays of more than 1000 elements. A number reduction aided by low cost intelligent panels is developed to reduce at least 60 cost. AiPAiM are used to compact the array with reconfigurability at low power losses. The gains are compensated by phase-reconfigurable AiP/AiM to feed smart multi-beam panels of large apertures. It may steer directional beams by operating the active RF modules tightly fed by AiP/AiM based arrays. Tile architecture can be implemented using multiple AiPs/AiMs for flexible array configurations.

Concerning the uncertainty of assuming well-mixed aerosols within the planetary boundary layer, a sensible aerosol vertical distribution described by a log-normal fitting function is proposed to provide more realistic single-peak extinction profile with a decadal MPL in situ dataset. The performance of fitted single-peak aerosol profiles can reach up 0.8973 of correlation coefficient when considering the seasonal variations in PBLH and the surface layer height of well-mixed aerosols. Eventually, not only the aerosol extinction profile but also the 3-dimensional distribution are promising to be created from satellite AOD retrieval with PBLH information for providing accurate PM2.5 monitoring over a regional scale.