Seawinds Instrument Specifications

Lauch -

• June 18, 1999

Orbit -

• Polar Orbit
• Eccentricity: 0.0001425
• Inclination: 098.6267°
• Perigee Height: 804 km
• Apogee Height: 806 km
• Right Ascension of Ascending Node: 255.8351°
• Argument of Perigee: 076.9019°
• Revolutions per Day: 14.25889067 (101 minute period)

Frequency:

• Carrier: 13.2 GHz
• Linear FM chirp of 250 kHz/ms

Timing:

• 5.3895 ms PRI; 1.49495 ms pulse width

Antenna:

• Rotating 1m parabolic dish; 18.0209 rpm
• Transmitts alternating H pol and V pol pulses
• Peak gain of 39.50 dB inner (H pol); 40.90 dB outer (V pol)
• 3 dB beamwidth of 2 degress, 20 dB beamwidth of 4 degrees
• Elevation angle of 39.876 degrees inner beam; 45.890 degrees outer beam

Power:

• Transmitts 110 Watts power per pulse

Measurements:

• Ground swath is 1,800 km in diameter.
• Wind cell resolution is 25 km

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