Table 1.

The main technical specifications of scientific payloads on the relay satellite platform.

Scientific payload	Specifications
LOVEX	Frequency: X (8–9 GHz) Band width: 64, 128, 256 and 512 MHz Gain: 28–62 dB Clutter suppression: ≤−50 dBc@0 dBm Harmonic suppression: ≤−35 dBc@0 dBm Noise factor: ≤3.5 dB
GENA	Neural atom species: H, O Energy range: 4–200 keV(H), 8–250 keV(O) Energy resolution: better than 1 keV@10 keV Fly time resolution: ≤1 ns Geometric factor: better than 14 cm2Sr Flux measurement sensitivity: better 3 counts/(cm2·s)
EUC	Double waveband central wavelength: 30.4 ± 0.5 nm, 83.4 ± 2.0 nm Spectral bandwidth: ≤5 nm@30.4 nm, ≤23 nm@83.4 nm Angular resolution: better than 0.3° Sensitivity: ≥0.4 counts/s/R/pixel @30.4 nm, ≥0.054 counts/s/R/pixel @83.4 nm Dynamic range: 0.01–15 R@30.4 nm, 0.1–300 R@83.4 nm Dark count rate: ≤1 counts/(cm2·s)