Software wave receiver for the SS-520-2 rocket experiment

Abstract

A software wave receiver was aboard the SS-520-2 rocket as a part of the plasma wave analyzer and successfully accomplished waveform observations and spectral observations. In the present paper, we describe the specifications and roles of the software wave receiver on the SS-520-2 rocket experiment. This receiver consists of a waveform receiver using real-time data compression and a spectral receiver with high time and frequency resolution using a programmable down converter. We report here on the first flight test of the new plasma wave receiver to be used for future planet explorers and space observation missions. Every 0.5 s, spectra of a 3-MHz signal with 0.3-kHz resolution are obtained, and the data compression of waveforms with the bandwidth of 15 kHz are performed. Although the sweep time was occassionally affected if the data were not compressed enough, no data were lost during the flight.

Plasma wave observation using waveform capture in the Lunar Radar Sounder on board the SELENE spacecraft

“…Thus, a digital sweep frequency analyzer with very high time and frequency resolution can be realized. This technique was first implemented for the HF receiver in the PWA onboard the SS-520-2 rocket experiment (Hashimoto et al, 2003). The HF receiver onboard the SS-520-2 rocket experiment measured only 1 component of the electric field.…”

“…In the SS-520-2 rocket experiment, a lossy compression method was adopted (Hashimoto et al, 2003). In the SELENE mission, however, we adopt a range coder that is one of lossless compression algorithms (Range Encoder Homepage, 1999).…”

“…The WFC is a software receiver (Hashimoto et al, 2003) in which most of the functions are realized by a digital signal processor (DSP) and programmable down convertCopyright c The Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS); The Seismological Society of Japan; The Volcanological Society of Japan; The Geodetic Society of Japan; The Japanese Society for Planetary Sciences; TERRAPUB. ers (PDC) implemented on the WFC board.…”

“…This kind of digital receiver was designed, for example, for the low-frequency receiver (LFA) on board the NOZOMI spacecraft . This technique was further developed for the plasma wave analyzer (PWA) for the SS-520-2 rocket experiment (Hashimoto et al, 2003). In the development process of the onboard software for the WFC onboard the SELENE spacecraft, we have additionally implemented several techniques of digital signal processing to extract important data for each scientific objective by adequately changing the observation mode and reducing the total amount of telemetry data.…”

Data Analysis of the TK-1G Sounding Rocket Installed with a Satellite Navigation System

“…Since 1945 when the first one was launched, various kinds of sounding rockets have appeared, such as America's famous SCIFER-2 (Sounding of the Cleft Ion Fountain Energization Region) sounding rocket [8], Japan's S-310, S-520, and SS-520 series of sounding rockets [9], Europe's REXUS (Rocket Experiments for University Students) series of sounding rocket, and so on [10]. In order to acquire various sounding data, the sounding rocket tends to carry different sondes, such as TOTAL (stands for total number density), CONE (Combined sensor for Neutrals and Electrons), and the recently used LITOS (Leibniz-Institute Turbulence Observations in the Stratosphere) [11][12][13][14].…”