BackForward Satellite: PIESAT-1 

Satellite details
Acronym PIESAT-1
Full name PIESAT-1 (also known as Hongtu-1)
WIGOS Station Identifier ---
Satellite Description
  • First X-Band interferometric SAR constellation of 4 satellites in hub and spoke formation
  • PIESAT-1 A01 (hub)
  • PIESAT-1 B01, B02, B03 (auxiliary)
  • Main mission land surface mapping and terrain elevation 
  • Significant contribution to disaster monitoring
Mass at launch Dry mass 320 kg
Data access link
Data access information
  • Data commercially available from PIESAT
Orbit Sunsynchronous orbit Altitude 530 km
Inclination 97.5 °


Space agency CASC
Status Operational
Details on Status
(as available)
Launch 30 Mar 2023 EOL ≥2033
Last update: 2023-11-23
Associated satellite programme and related satellites

Note: red tag: no longer operational , green tag: operational , blue tag : future

Satellite Payload

All known Instruments flying on PIESAT-1

Acronym Full name
Show instrument status and calibration
Satellite frequencies for Earth Observation, data transfer and platform communications and control
Earth observation MW frequencies
Service Sensing mode Frequency (GHz) Bandwidth (MHz) Polarisation Comments
SAR active 9.65 GHz 10 MHz X-Band SAR