Space optical terminal: 0.908 s mean acquisition
A 2026 field study reported a 0.908-second mean acquisition time and 120.16 µrad mean open-loop pointing error after star-referenced calibration.
- Team / system
- Changchun Institute optical-terminal field study
- Link geometry
- Ground field verification against stellar references
- Platform
- 150 mm periscope-type optical terminal
- Year / programme
- 2026
01 · SYSTEM
How it was achieved
The terminal used a two-axis coarse-pointing gimbal, a stellar-capture channel, coarse tracking, fine steering and a communication channel. A least-squares calibration based on stellar observations corrected structural and installation errors before repeated outdoor acquisition trials.
02 · EVIDENCE
Evidence snapshot
- 01
Mean open-loop pointing error reduced from 2,070.24 to 120.16 µrad.
- 02
Mean acquisition time measured at 0.908 s.
- 03
All reported trials completed acquisition in under one second.
- 04
Seven field campaigns covered varied initial attitudes.
03 · SIGNIFICANCE
Why it matters
Fast acquisition preserves more of a short satellite pass for data transfer and can reduce the overhead of reconnecting dynamic optical networks.
05 · REFERENCES
Sources & references
The values in this file are traced to the sources below. Record language follows the wording supported by the primary evidence.
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