Automatic Antenna Tracker AAT for FPV drone video transmitter

What is an Automatic Antenna Tracker?

A device called an automatic antenna tracker can point a directional antenna towards a moving object, like a drone. The device is usually composed of a gimbal that can rotate an antenna in two directions, a controller to calculate the orientation and the location of the target and a communications link for sending and receiving data. Automatic antenna trackers can be used for applications that need long-range, reliable wireless communication. Examples include FPV (first-person view) flying, radio direction finding, and satellite communication.

Drone automatic antenna trackers track a drone using GPS data or telemetry signals and then aim its antenna towards it to increase video or data transmission quality. Some types, such as the AAT Auto Antenna Tracker Gimbal, even alter the frequency or channel of transceiver frequencies/channels for interference-free operation.

Automatic Antenna Tracker AAT User Manual

часто задаються

питання: Does your automatic antenna tracker support raw data or Mavlink data?

on the aircraft transceiver, the TTL port that Receives the NMEA-0183 даних, is different from the port that I will Send and Receive the Row data on it? Because I will use NMEA-0183 To Send TTL GPS DATA to the Transceiver on the aircraft, Please confirm with me the data link is configured to send and receive raw Data. Not Mav link protocol is it okay?

Відповідь: підтримка.

питання: Do your automatic antenna tracker with GPS and compass?

питання: How about the frequency range of your automatic antenna tracker AAT support?

питання: What is the HS code of your AAT?

Відповідь: Назва продукту: Direct Drive gimbal, Customs код HS: 8543709990.

питання: Does it support two antennae?

I have two antennas, one Yagi antenna designed for tracking at a frequency of 433MHz, and one patch antenna in microstrip design at a frequency of 5.8GHz for capturing the video signal from the drone.

Відповідь: We understand that your wireless video transmission and radio telemetry are two independent devices. Our automatic antenna gimbal has only a one-way high-frequency feeder connector and sliding track.
If your wireless video transmission and wireless data transmission have two different operating frequencies, you need two automatic antenna trackers to track.

питання: Our drone video transmission is RS232 data port, can you modify your automatic antenna tracker AAT to RS232 from default TTL?

Відповідь: Так, we can customize the data port to RS232.

питання: Can we send commands to the AAT? Наприклад, the antenna goes to a specific angle When the trajectory is tracking or the connection is lost.

I read the user manual but could not find the commands, When there is no data, I want the gimbal to point to 25 degrees in azimuth concerning the north and 40 degrees in elevation.

Відповідь: This requires programming software to connect to the gimbal.
You can run our program on your computer, or you can integrate our program into your ground station.

Here you can download our programmer.

MAVLinkProj.rar (sample code)

https://drive.google.com/file/d/1xEqn_lUoiieNuf7Aoh87d2-3bHTV0GUh/view?usp=sharing

Mavlink_MFD.rar (Протокол)

https://drive.google.com/file/d/1TosLRNbjT1OZl38g4QpKQ46nnGXIMFAo/view?usp=drive_link

питання: With the above software, I could not send a command. Must we use an upper TTL connector?

Does it have a specific setting? For integrating with our ground station, can you give us a sample code or a protocol?

Відповідь: use the lower (firmware update cable) to send the command (MAVLinkProj).

питання: What is the weight and size of the tracker only in the package?

Відповідь: 35x32x17cm, and 5.5kg

питання: The AAT sends a message 20hz to our ground station. We need a description of the parameters that have been sent. Two parameters Yaw and pitch is our command or the antenna’s real position?

Відповідь: Yaw and pitch are your command values. but the tracker executes the command fast. so you can consider it to be of real value.

питання: Your antenna tracking system has a rotary joint and slip ring. How much max RF power the rotary joint can accept? Like 10 ват або 50 watts or more.

Відповідь: No limits.

питання: We have a direct GPS feed coming from air unit via rs232. Format is NMEA.It’s a standard GPS string, please double confirm it.

Відповідь: Так, our engineer confirms that it is NMEA standard GPS string.

питання: What is the range of the automatic antenna tracker for a walk snail gimbal?

Відповідь: As for the transmission distance of the automatic pan-tilt flat antenna, we can understand it from a parameter. The gain of a 1.2-meter omnidirectional fiberglass antenna is about 7 дБі. проте, if it is a 40×40 cm directional antenna, its gain can reach 14-16 дБі, which means that the automatic antenna tracker with directional antenna has twice the antenna receiving sensitivity than the omnidirectional fiberglass antenna, and the supported transmission range can be more than twice as long.