VELOX-CI Tropical Climate Satellite
Objectives
VELOX-CI is a satellite program funded by EDB. The objective is to develop and launch a tropical weather monitoring satellite into a near equatorial orbit to take advantage of a high revisit rate over Singapore.
Scope of the program
- Development of a 3D atmospheric measurement payload comprises of a GPS occultation module and radio frequency probe
- Radiation tolerance computer board using hybrid hardware and software redundancy
- Hybrid Attitude Determination System (ADS) using GPS measurement
- Real-time star tracking algorithm for attitude determination
![Velox-CI](/images/librariesprovider112/satellite/velox-ci40cf64ac-00bb-4b9b-a5a8-70f803bf50cb.jpg?sfvrsn=472628a_5)
Orbit | Near equatorial orbit, altitude 550 km |
Mission Life | 3 years |
Dimensions | 615mm x 608mm x 848mm |
Mass | 123 kg |
Attitude Knowledge | less than 0.2 degree @ 3 sigma |
Pointing Accuracy | less than 2 degree @ 3 sigma |
Solar Panels | 24 series x 10 strings for 3 panels |
Battery Capacity | 20Ah @EOL |
RF Link | S-band Up/Downlink (32 kbps, BPSK) X-band Down-link (160Mbps) |
Payloads | Radio occultation payload Experimental RF probe |
![](/images/librariesprovider112/satellite/gps-ro.jpg?Status=Master&sfvrsn=f5e123a5_10)
![EQM Vibration Test EQM Vibration Test](/images/librariesprovider112/satellite/eqm-vibration-test-068365cd-e17f-4295-96a1-8f9732db1f20.jpg?sfvrsn=98f11bc9_3)
EQM Vibration Test
![Radio Occultation Payload Radio Occultation Payload](/images/librariesprovider112/satellite/radio-occultation-payloadd1559116-ba6b-4468-a669-a5c06c7841a4.jpg?sfvrsn=8e19a25_3)
Radio Occultation Payload
![Star tracking software Star tracking software](/images/librariesprovider112/satellite/vcip5cd3e111a-0896-4d70-8df5-63d0a427894c.jpg?sfvrsn=3ba0f34a_8)
Star tracking software