Skip to main content

Table 5 Observation modes with their specifications

From: The Plasma Wave Experiment (PWE) on board the Arase (ERG) satellite

Receiver

Data products

Mode

Specification

Data rate (bps)

(a) Continuous data

EFD

(f < 256 Hz)

    

3104 (Apo.)/9248 (Peri.)

Waveform

DPB (dual probe)

Apo-mode

64 Hz × 16bit × 2ch

2048

  

Peri-mode

256 Hz × 16bit × 2ch

8192

 

SPB (single probe)

 

8 Hz × 8bit × 4ch

256

Spectrum

DPB (dual probe)

 

8bit × 1ch × 100 points/s

800

OFA

(f < 20 kHz)

    

8600

Spectrum

OFA-SPEC

OFA_500MS

Δt = 0.5 s, freq. = 66 points

2112

 

E: 1ch

OFA_1S

Δt = 1.0 s, freq. = 132 points

 
 

B: 1ch

OFA_2S

Δt = 2.0 s, freq. = 264 points

 
  

OFA_4S

Δt = 4.0 s, freq. = 528 points

 

S-Matrix

OFA-MATRIX

E: 4 elements

B: 9 elements

The time and frequency resolution changes in conjunction with the OFA-SPEC

Time resolution (Δt) is 1/8 of the OFA-SPEC, while the number of frequency points is the same as the OFA-SPEC.

3848

Complex

OFA-COMPLEX

E: 2 ch

B: 3 ch

2640

HFA

    

1018 (Nominal)/1822 (PP-mode)

 E: 10 k–10 MHz

Spectrum

E: 2ch

EE-mode

Δt = 8.0 s, E(480 pts.) × 2ch

992

 B: 10 k–100 kHz

 

E: 1ch + B: 1ch

EB-mode

Δt = 8.0 s, E (480 pts.) B (160 pts.) Phase of E*B (160 pts.x2)

992

  

E: 1ch

PP-mode

Δt = 1.0 s

1796

Receiver

Data products

Mode

Specification

Data amount(/s)

(b) Burst data

EFD

(f < 256 Hz)

Raw data

(DPB + SPB)

EFD burst

Identical with the raw data produced by the EFD (see Table 3)

24.6 kbit

WFC

(f < 20 kHz)

Waveform

Chorus burst

65,536 Hz × 5ch (E × 2ch, B × 3ch)

2.88 Mbita

EMIC burst

1024 Hz × 5ch (E × 2ch, B × 3ch)

81 kbit

  1. aData amount in chorus burst mode is compressed to ~ 55% from the original data