Measurements and Applications
XPAA provides Spotlight, Stripmap and ScanSAR data for applications of environmental monitoring, disaster monitoring, resource management, topographic mapping, and information gathering.
Full Name
X-band Phased Array Antenna
Status
Being developed
Instrument Agencies
TASA
, Tron Future
Maturity
Instrument Type
Imaging microwave radars 
Geometry
Side-looking
Instrument Technology
Imaging radar (SAR)
Sampling
Imaging
Data Access
Constrained Access
Data Format
SICD (Level 1.1/1.5 product also named SLC/GRD data), SIDD (Level 2.1 product also named EEC data)
Resolution
Spotlight: 0.7-1 m, Stripmap: 3 m, ScanSAR: 10-15 m
[Best Resolution: 0.7m]
Swath
Spotlight: 5-8 km, Stripmap: 20 km, ScanSAR: 50-80 km
[Max Swath: 80 km]
Accuracy
Radiometric accuracy: 1 dB
Waveband
X-band: 9.65 GHz, 650 MHz bandwidth; single/dual/quad polarisation
Compiled from the 2026 Extended Parameters Survey, agency-nominated technical contacts and published user guides; not yet collected through the annual CEOS MIM survey.
Polarisation Channels
HH · HV · VV · VH
Polarisation Modes
single · dual · quad
Look Direction
Both (nominal Right)
Antenna
Phased array patch antenna — 3.75 × 1 m
Polarisation Notes
Tx: selected H or V (single channel, inter-pulse switchable); Rx: simultaneous H and V (dual channels)
Source
2026 Extended Parameters Survey (TASA, 2026-09-09)
Compiled from the 2026 Extended Parameters Survey, agency-nominated technical contacts and published user guides; not yet collected through the annual CEOS MIM survey.
| Mode | Resolution az × rg (m) | Swath (km) | Incidence (°) | Polarisation | NESZ (dB) | Bandwidth (MHz) |
|---|
| Spotlight Electronic azimuth-steering at fixed satellite attitude with quasi zero-Doppler | 1 × 1 | 7 | 25–45 | HH; VV; HH+HV; VV+VH | -12 | 650 |
| Stripmap Without electronic steering at fixed satellite attitude with quasi zero-Doppler | 3 × 3 | 20 | 25–45 | HH+HV; VV+VH; HH+HV+VV+VH | -17 | 150 |
| ScanSAR Electronic elevation-steering at fixed satellite attitude with quasi zero-Doppler | 15 × 15 | 80 | 28–42 | HH+HV; VV+VH; HH+HV+VV+VH | -23 | 50 |