low-cost UAV Radio Data Link

विषयसूची

1. परिचय

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.

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

2. Technical specifications

पैरामीटर	कीमत
Maximum Operating Range	25किमी
Operating Height	10-5000एम
Max UAVs Speed	100m/s
Frequency Band	यूएचएफ (upper 400MHz)
Frequency Channel Selection	हाँ
Frequency hopping	वैकल्पिक (is preferred)
UAV module Transmit Power	2डब्ल्यू
GS module Transmit Power	10डब्ल्यू
आधार - सामग्री दर	See the below figures (software selectable in range of 1kbps to 500kbps)
Packet transmission delay	≤ 5 मिलीसेकंड
Error detection	CRC
Channel Coding (FEC)	हाँ
Encryption	हाँ
Senstivity	−122dBm@20केबीपीएस −199dBm@40केबीपीएस −111dBm@230केबीपीएस −108dBm@500केबीपीएस
MIMO Antenna	वैकल्पिक
Operation mode	बिंदु से बिंदु तक (GS to one UAV) Point to MultiPoint (GS to maximum 12 UAVs on air, इसके साथ ही)
Receive satuation power	10dBm
No damage receiver power	20dBm
Boot time	Less than 2sec
Operationg time	अधिकतम 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. नेटवर्किंग प्रकार

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.

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

4. Electrical and Interface

पैरामीटर	कीमत
UAV Installed Module
इनपुट वोल्टेज	9~18V
आनुक्रमिक द्वार	1, RS-422
Serial Baud Rate	9600~460800bps,
एंटीना कनेक्टर	हाई स्कूल
Interface Connector	J30J or DB type
वजन	Less than 150g
आकार (एलएक्सडब्ल्यूएक्सएच)	8 × 8 × 3 सेमी
GS Installed Module
इनपुट वोल्टेज	9~18V
Serail Port	1, RS-422
Serial Buad Rate	9600~460800bps,
ईथरनेट	RJ-45, 100एमबीपीएस
एंटीना कनेक्टर	N-Type
Interface Connector	J30J or DB type
वजन	Less than 500g
आकार (एलएक्सडब्ल्यूएक्सएच)	15 × 10 × 4 सेमी

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. कृपया नीचे दिए गए लिंक की जाँच करें.