November 23, 2014 at 04:05The satellite is very simple - 2
The publication “Satellite is very simple” talked about how easy it is now to hear satellites in Earth orbits and about the ability to decrypt the received signals of some satellites. Unfortunately, this telemetry information remains inaccessible to interested parties.
And althoughspaceships plow the expanses of the Bolshoi Theater, satellites successfully enter orbit and transmit information about the experiments, but their owners can “hear” only a few minutes. Because the owners of various CubeSat publish instructions and software for receiving their satellites, hoping to get as much telemetric information from enthusiasts. For example, for Manfred Memorial Moon Mission (4M)A competition was held among enthusiasts who sent the largest number of telemetry received.
A possible solution to this issue could be the SatNOGS project , which is a project for the mass construction and deployment of amateur tracking stations around the world based on open source technologies and open standards.
The SatNOGS station is modular and can be easily modified. The station is connected to the Internet and is fully automated.
The following diagram shows the essence of the project:
Through the Global Management Network, observers interact with several tracking stations. The data collected will be available to the public through its own website.
SatNOGS Tracking Station is an azimuth-rotary device, antennas, LNA and an integrated system that receives planned operations from the Global Management Network, records the results of observations and sends them back to the Global Management Network.
The station configuration can be modified - factory or home-made azimuth-rotary device, different types of antennas:
Self-manufacture of the rotator and antennas is well illustrated , and the design uses readily available and cheap materials. for example, PVC water pipes:
The station consists of three parts:
Instrumentation is an antenna, diplexer, amplifier, RTL-SDR receiver, GPS, rotary device.
Odroid U3 - station computer on which the antenna control, processing of the operation queue, signal reception and decoding are assigned.
TP-Link TL-WR-703N - for accessing the Internet via WiFi.
The station is built from the following components:
All components are located inside an easily purchased electrical box:
In which the mechanical components made on a 3D printer and stepper motors are mounted first:
Then the electronic components are mounted there:
It remains to proceed with installing the software on the hardware .
Satellites are waiting!
And although
A possible solution to this issue could be the SatNOGS project , which is a project for the mass construction and deployment of amateur tracking stations around the world based on open source technologies and open standards.
The SatNOGS station is modular and can be easily modified. The station is connected to the Internet and is fully automated.
The following diagram shows the essence of the project:
Through the Global Management Network, observers interact with several tracking stations. The data collected will be available to the public through its own website.
SatNOGS Tracking Station is an azimuth-rotary device, antennas, LNA and an integrated system that receives planned operations from the Global Management Network, records the results of observations and sends them back to the Global Management Network.
The station configuration can be modified - factory or home-made azimuth-rotary device, different types of antennas:
Self-manufacture of the rotator and antennas is well illustrated , and the design uses readily available and cheap materials. for example, PVC water pipes:
The station consists of three parts:
- Instrumentation
- Odroid U3
- TP-Link TL-WR-703N
Instrumentation is an antenna, diplexer, amplifier, RTL-SDR receiver, GPS, rotary device.
Odroid U3 - station computer on which the antenna control, processing of the operation queue, signal reception and decoding are assigned.
TP-Link TL-WR-703N - for accessing the Internet via WiFi.
The station is built from the following components:
- 2 stepper motors
- 2 drivers A4988 stepper motors
- Arduino Micro (controls engines with Odroid U3 commands)
- TP-Link WR703N
- DVB-T receiver based on RTL2832U
- One directional antenna for ranges of 2 meters and 70 cm
- ODROID U3
All components are located inside an easily purchased electrical box:
In which the mechanical components made on a 3D printer and stepper motors are mounted first:
Then the electronic components are mounted there:
It remains to proceed with installing the software on the hardware .
Satellites are waiting!