ALOS-4 current status

Satoko H. Miura; Yukihiro Kankaku; Takeshi Motohka; Kazuhide Yamamoto; Shinichi Suzuki

doi:10.1117/12.2599578

12 September 2021 ALOS-4 current status

Satoko H. Miura, Yukihiro Kankaku, Takeshi Motohka, Kazuhide Yamamoto, Shinichi Suzuki

Proceedings Volume 11858, Sensors, Systems, and Next-Generation Satellites XXV; 1185809 (2021) https://doi.org/10.1117/12.2599578
Event: SPIE Remote Sensing, 2021, Online Only

Abstract

This paper describes the current status of Advanced Land Observing Satellite-4 (ALOS-4) and its two instruments: Phased Array-type L-band Synthetic Aperture Radar-3 (PALSAR-3) and SPace based Automatic Identification System for ships Experiment (SPAISE3). PALSAR-3 is the successor of PALSAR-2 which is boarded on ALOS-2(Advanced Land Observing Satellite-2) and has 3m resolution and 200km observation swath by using Digital Beam Forming (DBF) technology. Its antenna consists of 5 panels and is about 20% larger than PALSAR-2, to get the same NESZ (Noise Equivalent Sigma Zero) performance for a wide observation swath. PALSAR-3 will be in the same orbit and observation geometry as PALSAR-2 to enable InSAR time series analysis over 10 years using both of PALSAR-2 and PALSAR-3 data. PALSAR-3 has several observation modes with different spatial resolutions to fulfill the mission requirements. In order to achieve temporally and spatially consistent data, systematic observation, a Basic Observation Scenario (BOS) will be defined. SPAISE3 is a high-performance satellite AIS receiver and the successor of SPAISE2 boarded on ALOS2. SPAISE3 has eight antennas and adopts ground-based DBF method as one of effective countermeasures against radio wave interference regions. Using this technology, the detection success rate of ships in heavy marine traffic area will be improved compared to SPAISE2.

Conference Presentation

Citation Download Citation

Satoko H. Miura, Yukihiro Kankaku, Takeshi Motohka, Kazuhide Yamamoto, and Shinichi Suzuki "ALOS-4 current status", Proc. SPIE 11858, Sensors, Systems, and Next-Generation Satellites XXV, 1185809 (12 September 2021); https://doi.org/10.1117/12.2599578

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available