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- | ====== Cubsats beacons ====== | + | ====== Receipt of data from CubeSat beacons ====== |
- | A beacon is called a periodically transmitted signal (once a minute or so), which contains the name of the spacecraft (call sign) and the most important telemetry - the voltage of the onboard power supply, the state of the batteries and solar panels, the temperature of various points of the device, and so on. | + | A beacon is a periodically transmitted signal (with the frequency of once a minute or near that) which contains the name of a spacecraft unit (the call sign) and the most important telemetry - voltage of onboard power supply sources, state of the batteries and solar panels, temperature of various points of the spacecraft unit, etc. |
- | The following software is used to receive lighthouses from cubsats: | + | The following software is used to receive beacons data from the CubeSats: |
- | * SDR # for receiving a radio signal; | + | * SDR# software for radio signal receipt; |
- | * Orbitron for tracking the satellite and taking into account the Doppler effect; | + | * Orbitron for satellite tracking and Doppler effect control; |
- | * Hs soundmodem for receiving command codes; | + | * Hs soundmodem for command codes receipt; |
+ | * | ||
+ | Launch the SDR# software and select the radio receiver type: RTL-SDR connected via USB. | ||
- | Launch SDR # and select the type of radio: RTL-SDR connected via USB. | ||
{{:06image002.png?200|}} | {{:06image002.png?200|}} | ||
- | In the Radio section, set the switch to WFM mode and set the Bandwidth to 12000. | + | Set the switch to the WFM mode and set the bandwidth to 12000 under the "Radio" inscription. |
{{:004.png?200|}} | {{:004.png?200|}} | ||
- | Make sure the “Filter Audio” checkbox is unchecked. | + | Make sure that the "Filter Audio" point is unchecked. |
{{:005.png?200|}} | {{:005.png?200|}} | ||
- | Next, you need to increase the signal gain. To do this, click on the gear. | + | Further you need to increase the signal amplification. To do this, click on the gear icon. |
{{:06image004.png?200|}} | {{:06image004.png?200|}} | ||
- | Move the slider so that the noise level rises by about 10dB. | + | Move the slider so that the noise level increases by about 10 dB. |
{{:05image012.png?200|}} | {{:05image012.png?200|}} | ||
- | This is what the kubsat lighthouse should look like. | + | A CubeSat beacon is provided in the following form. |
{{:007.png?200|}} | {{:007.png?200|}} | ||
- | In the Tracking DDE Client section, when Orbitron is connected correctly, information about the tracked satellite will appear. | + | Information about tracked satellites will appear in the field “Tracking DDE Client”, if Orbitron has been connected properly. |
{{:008.png?200|}} | {{:008.png?200|}} | ||
- | Launch Orbitron and update TLE first. Click on the tool button. | + | Launch Orbitron and update TLE firstly. Click the button with tools indication. |
{{:en:image_43.png?500|}} | {{:en:image_43.png?500|}} | ||
- | Press the zipper button to update the TLE. | + | Click on the lightning button to update TLE. |
- | + | ||
- | Then select the weather satellite information file. | + | |
{{:en:image_47.png?500|}} | {{:en:image_47.png?500|}} | ||
- | Click the Download TLE button. | + | Click on the “Load TLE” button. |
{{:en:image_26.png?150|}} | {{:en:image_26.png?150|}} | ||
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Download the cubesat.txt List | Download the cubesat.txt List | ||
- | {{:01image012.png?400|}} | + | {{:en:orbitron_3.png?400|}} |
- | In the side list on the right, only cubsats will appear. Select Aausat 4, BeeSat 2, Beesat 4, GOMX1, LilacSat2. | + | Only CubeSats will show up in the side list on the right. Select Aausat 4, BeeSat 2, Beesat 4, GOMX1, LilacSat2. |
- | The selected satellites will be shown in the main program window. | + | All selected satellites will be shown in the main software window. |
{{:009.png?600|}} | {{:009.png?600|}} | ||
- | Then go to the Calculation tab and click on the Calculation button. | + | Proceed to the “Calculation” tab and click the “Calculation” button. |
{{:en:image_48.png?400|}} | {{:en:image_48.png?400|}} | ||
- | The satellite will automatically calculate the time of flight. Go to the Rotor / Radio tab and make sure the tracking button is pressed. | + | The satellites' overflight times will be calculated automatically. Proceed to the "Rotor/Radio" tab and make sure the tracking button is pressed. |
{{:en:image_49.png?400|}} | {{:en:image_49.png?400|}} | ||
- | In the window with the receive frequency (Dnlink / MHz) the following correct frequency should be set: | + | The box with indication of the reception frequency (Dnlink/MHz) shall be used to set the following correct frequency: |
* BEESAT-2 435.950 MHz | * BEESAT-2 435.950 MHz | ||
* GOMX-1 437,250 MHz | * GOMX-1 437,250 MHz | ||
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{{:01image020.png?200|}} | {{:01image020.png?200|}} | ||
- | Select the audio source Input device - CABLE Output. | + | Select the sound source "Input device - CABLE output". Check the "AGWPE server port enabled" checkbox. It is also possible to check the "Color waterfall" checkbox. |
- | Check the AGWPE Server Port Enabled checkbox. | + | |
- | Additionally, you can check the Color waterfall checkbox. | + | |
{{:01image021.png?300|}} | {{:01image021.png?300|}} | ||
- | To test the HS soundmodem, enable LitSat-1 satellite recording. To do this, follow the link https://yadi.sk/d/iYDiVeAEos0yPQ and enable the recording. | + | In order to check HS soundmodem operation - enable signal recording from the LitSat-1 satellite. To do this, go to https://yadi.sk/d/iYDiVeAEos0yPQ and turn the recording function on. |
{{:01image022.png?400|}} | {{:01image022.png?400|}} | ||
- | Set the sound volume to maximum so that the waterfall is of this color. | + | Set the sound volume to maximum so that the waterfall has the necessary color. |
{{:01image023.png?400|}} | {{:01image023.png?400|}} | ||
- | After some time, satellite telemetry should appear in the HS soundmodem program window. | + | After a while the telemetry data received from the satellite should appear in the HS soundmodem software window. |
{{:01image024.png?600|}} | {{:01image024.png?600|}} | ||
- | Select the type of signal according to the type of cubesat received. | + | Select the type of a signal according to the type of the received beacon. |
{{:011.png?150|}} | {{:011.png?150|}} | ||
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- | + | Materials from https://r4uab.ru were used to prepare the task. | |
- | In preparing the lesson, materials from the site https://r4uab.ru were used | + | |