Advanced Land Observing Satellite-4 “DAICHI-4” (ALOS-4) Phased Array type L-band Synthetic Aperture Radar-3 (PALSAR-3) Antenna Deployment Results

The Japan Aerospace Exploration Agency (JAXA) confirmed that the second wing deployment^*1 of the Phased Array type L-band Synthetic Aperture Radar-3 (PALSAR-3)^*2 antenna was successfully performed by receiving telemetry from the Advanced Land Observing Satellite-4 “DAICHI-4” (ALOS-4) at the JAXA Maspalomas station in Canary Islands, Spain at 22:07 on July 2, 2024 (JST). Although JAXA did not obtain the clear images of the deployed second wing.
All scheduled antenna deployment operations of PALSAR-3 have now been completed.
The deployment result of the SPAISE3^*3 antenna, for which data will be acquired later, will also be posted on the website.

*1: Second wing deployment
Deployment of the second wing of the PALSAR-3 antenna that had been folded up.

2: L-band synthetic aperture radar (PALSAR-3)
The L-band synthetic aperture radar (PALSAR-3: Phased Array type L-band Synthetic Aperture Radar-3) is a sensor that obtains information by irradiating the earth’s surface with radio waves and receiving the radio waves reflected from the surface.

*3: SPAISE3
The SPace-based Automatic Identification System Experiment 3 (SPAISE3) is a sensor that receives signals from the Automatic Identification System (AIS) installed on ships.

<Conceptual Imagery of DAICHI-4 PALSAR-3 Antenna Second Wing Deployment>
▶ DAICHI-4 (ALOS-4) CG movie
https://www.youtube.com/watch?v=lzMONfjs-Ew

★ Mitsubishi Electric Corporation is in charge of design and manufacturing as the prime contractor and is supporting the initial operations conducted by JAXA.

【Related Site】
Mitsubishi Electric Corporation – Space Systems
https://www.mitsubishielectric.com/bu/space/index.html

JAXA DAICHI-4 (ALOS-4) Project Page
https://global.jaxa.jp/projects/sat/alos4/