недорогий БПЛА Radio Data Link

Зміст

1. введення

The digital data link modules are used for the communication between UAVs and the ground station (GS) to send data and receive commands. The two-way radio link must have high reliability and always be connected during the flight. Link module on UAV side must have a low price due to limitation on UAV total cost in mass production.

The main feature of this data link is the low rate of sending and receiving data to reduce the occupied bandwidth and subsequently increase the sensitivity of modules.

Примітки 1: The GS module must be capable of communicating with 12 UAVs simultaneously.

2. Технічні характеристики

Параметри	Значення
Maximum Operating Range	25км
Operating Height	10-5000м
Max UAVs Speed	100m/s
Діапазон частот	УВЧ (upper 400MHz)
Frequency Channel Selection	Так
Стрибкоподібні зміни частоти	Додатково (є кращим)
UAV module Transmit Power	2W
GS module Transmit Power	10W
Швидкість передачі даних	See the below figures (software selectable in range of 1kbps to 500kbps)
Packet transmission delay	≤ 5 мілісекунда
Виявлення помилок	CRC
Channel Coding (FEC)	Так
шифрування	Так
Senstivity	−122дБм@20кбіт/с −199дБм@40кбіт/с −111дБм@230кбіт/с −108дБм@500кбіт/с
MIMO Antenna	Додатково
Режим роботи	Від точки до точки (GS to one UAV) Point to MultiPoint (GS to maximum 12 UAVs on air, одночасно)
Receive satuation power	10дБм
No damage receiver power	20дБм
Час завантаження	Less than 2sec
Operationg time	Максимум 30 minutes continuously
Working tempearure	−20°𝐶 ~ + 60°𝐶

Three working modes for this digital data link can be considered, which are described in the following figures. According to the complexity and the cost of link module (specially on UAV side), each topology can be selected.

3. Тип мережі

1- The working frequency of all uplinks and downlinks are different (the nodes work in different channels).

2- The frequency of uplink and downlink for each node is the same but is different with other nodes.

3- The working frequency of all nodes is same as other nodes and GS is managing the nodes to avoid data loss and interference.

Примітки 2: In all the above three topologies, frequency hopping is a great advantage but is not a critical feature.

4. Electrical and Interface

Параметри	Значення
UAV Installed Module
Вхідна напруга	9~18В
Послідовний порт	1, RS422
Serial Baud Rate	9600~460800bps,
Роз'єм антени	SMA
Interface Connector	J30J or DB type
вага	Less than 150g
розмір (ДхШхВ)	8 × 8 × 3 см
GS Installed Module
Вхідна напруга	9~18В
Serail Port	1, RS422
Serial Buad Rate	9600~460800bps,
Ethernet	RJ-45, 100Мбіт/с
Роз'єм антени	N-Тип
Interface Connector	J30J or DB type
вага	Less than 500g
розмір (ДхШхВ)	15 × 10 × 4 см

Our low-cost UAV Radio Data Link does not has ethernet port, only serial port. The antenna connector is not N-Type, but SMA-Type. перевірте посилання нижче.