5:15 PM - 6:45 PM
[PCG20-P05] Development of the miniaturized and low-power plasma wave receiver for use on CubeSat
Keywords:CubeSat, Plasma wave receiver
Recently, CubeSat has been used actively in plasma wave observation. CubeSat is a standardized small satellite of 10 cm cubic size, which plays an important role in increasing observation opportunities and enabling simultaneous multi-point observations with high spatial resolution. However, due to their limited size and power constraints, it is difficult to install a high-performance plasma wave instrument on a CubeSat.
We propose a new miniaturized and low-power plasma wave receiver for installation on CubeSat. The new receiver divides the observation band into three frequency bands in the analogue circuit and is configured to significantly reduce power consumption in spectrum observation by reducing the sampling frequency in the low-frequency band. Such analogue circuits have been developed as Application-Specific Integrated Circuits (ASICs) in previous studies and are much smaller than conventional circuits. We use a small microcontroller, RP2040, to control the analogue circuits and digital signal processing such as Fast Fourier Transform. The RP2040's CPU core, Cortex M0+, is power efficient, but does not have high computing performance. Therefore, the ADC is controlled by hardware included in RP2040 called Programmable I/O in the new receiver. This allows the ADC control and FFT calculation to be performed in parallel for efficient processing. A breadboard model is currently under development, which will perform 6 channels of A/D conversion and FFT.
In our presentation, we will show the details of the breadboard model developed and the results of the performance evaluation.
We propose a new miniaturized and low-power plasma wave receiver for installation on CubeSat. The new receiver divides the observation band into three frequency bands in the analogue circuit and is configured to significantly reduce power consumption in spectrum observation by reducing the sampling frequency in the low-frequency band. Such analogue circuits have been developed as Application-Specific Integrated Circuits (ASICs) in previous studies and are much smaller than conventional circuits. We use a small microcontroller, RP2040, to control the analogue circuits and digital signal processing such as Fast Fourier Transform. The RP2040's CPU core, Cortex M0+, is power efficient, but does not have high computing performance. Therefore, the ADC is controlled by hardware included in RP2040 called Programmable I/O in the new receiver. This allows the ADC control and FFT calculation to be performed in parallel for efficient processing. A breadboard model is currently under development, which will perform 6 channels of A/D conversion and FFT.
In our presentation, we will show the details of the breadboard model developed and the results of the performance evaluation.