KySat-2
Kentucky Space
KySat-2 is the second satellite to be entirely designed, built, and tested by students of the University of Kentucky and Morehead University. Development of the satellite began in 2011, shortly after the launch of KySat-1. KySat-2 features a 5 megapixel digital camera, a temperature sensor, a 3-axis MEMS rate gyroscope, a 3-axis magnetometer, and a “stellar gyroscope” which was developed by University of Kentucky students. Once in orbit, the satellite will use RF signals to communicate with the ground station, receiving commands and transmitting data and photos.
NASA-Catalog: 39384
Beacon
437.405 MHz, 9k6 FSK AX.25 FM, 1 watt, 15 – 45 sec beacon interval
Call
KK4AJJ
Status
decayed
Orbital Parameter
NORAD 39384 COSPAR designator 2013-064-E Inclination 40.507 RA of A. Node 222.863 Eccentricity 0.0002165 Argument of Perigee 321.128 Revs per day 15.24152979 Period 1h 34m 28s (94.47 min) Semi-major axis 6 871 km Perigee x Apogee 492 x 495 km BStar (drag term) 0.000860810 1/ER Mean anomaly 38.947
Mission
The primary objective of KySat-2 is proof of concept. Using lessons learned from KySat-1, SSL has spent the past two years designing, revising, and optimizing KySat-2. KySat-2 will demonstrate key technologies developed by University of Kentucky and Morehead University students. These include a distributed network computing architecture, power and radio systems, and a “stellar gyroscope” for attitude determination. If successful, KySat-2 will serve as a standard on which to base future satellites built by the lab.
Telemetry
[78 Bytes KISS Frame (without CRC)]
ctrl: 3 PID: F0 {UI} 59 Payload Bytes
from KK4AJJ to CQ:
1 > D5 CE 36 63 33 16 0F 00 00 00 00 06 03 05 03 06 03 06 03 27
21 > 32 FF F4 0A 42 00 01 03 B1 00 00 00 00 00 43 FF FE FF FE 27
41 > 32 03 03 07 03 05 03 FD BE 17 00 01 00 2E 30 77 3A 94 05
Links und weitere Informationen
http://ssl.engineering.uky.edu/kysat-2-dashboard/
KySat-1
Kentucky Space
NASA’s Educational Launch of Nanosatellites also called ELaNA mission has selected a Kentucky built satellite called KySat-1 to fly in its “Glory” mission scheduled for February 2011. The satellite was designed and developed by the Kentuky Space, a non-profit consortium of members including several universities across the state including Kentucky Community and Technical College System. The satellite is about 4 inches and weighs around 2.2 pounds. The satellite includes a camera and a 2.4 gigahertz industrial scientific and medical band radio that will be used to test high-bandwidth communications that will support a scientific outreach program for grade schools students.
NASA-Catalog: ?
Uplink
145.850 MHz, FM
Downlink
436.975 MHz, FM 1k2 AFSK and CW beacon (FM)
Call
KYSAT-1
Status
The satellites were launched from Vandenberg Air Force Base at 10:09:45 UT Friday, March 4 on an Orbital Sciences Taurus XL rocket. The rocket’s fairing, the part of the rocket which covers the satellite on top of the launcher, did not separate properly so the Taurus XL did not have enough velocity to enter orbit.
CW beacon
FM modulated pseudo-CW beacon every five minutes. The frequency of the audio signal is 400 Hz @ 32 wpm. The message is encoded using ITU-R M.1677 International Morse Code. The message that will be transmitted is “KYSAT-1? followed by the battery voltage to the tenth volt, e.g. 7.8v, and the processor temperature to the hundredth degree C, e.g. 12.34C, i.e. an entire sample message will look like KYSAT-1 7.8v 12.34C.
e.g. KYSAT-1 65.5V 24.16C
AX.25 Digital Beacon
FM modulated AX.25 encoded digital beacon every 2.5 minutes. The digital beacon consists of a header, six binary-coded decimal numbers separated by commas, and a 8 bit bitfield consisted of eight ascii bytes showing either a 1 or 0.
- The header is T#
- The BCD are three digit numbers which correspond to, in order:
- The bitfield is eight 1 or 0 which will display a 1 if during the current day, from left to right:
i.e. a complete packet will look like: T#120,086,120,086,086,115,10001111
Homepage und weitere Informationen
http://kysat.typepad.com