Comprehensive understanding of Beidou short message communication - Skylab
Home
Products
GNSS Module
Single GPS Module
Beidou Module
GLONASS Module
RTK GNSS Module
GNSS timing Module
GPS Receiver G-mouse
GNSS Module with Antenna
Single Frequency GNSS Module
Dual Frequency GNSS Module
Inertial navigation GNSS Module
GPS Module
GPS Module For Car
GPS Module For Drone
MTK GPS Module
USB GPS Module
Micro GPS Module
WiFi Module
AP/Router WIFI Module
ESP8266 WIFI Module
IOT UART WIFI Module
USB WIFI Module
SDIO WIFI Module
SPI WIFI Module
5GHz WIFI Module
Camera WiFi Module
WIFI 6 Module
Drone WiFi Module
Dual-band WIFI module
WIFI Bluetooth Combo Module
Bluetooth Module
Bluetooth 4.2 Module
Bluetooth 5.0 Module
Bluetooth 5.2 Module
nRF52810 BLE Module
nRF52832 BLE Module
nRF52840 BLE Module
Bluetooth Beacon
BLE 4.0 Beacon
BLE 4.2 Beacon
BLE 5.0 Beacon
Card Beacon
Sensor Beacon
Helmet Beacon
Mini Beacon Tag
Road Stud Beacon
Tamperproof Beacon
Asset Tracking Beacon
Indoor Navigation Beacon
Wearable Wristband Beacon
Proximity Marketing Beacon
Cattle Sheep Ear Tag Beacon
BLE&WiFi Gateway
Indoor IoT Gateway
Outdoor IoT Gateway
BLE 4.2 WIFI Gateway
BLE 5.0 WIFI Gateway
4G Cat1 IoT Gateway
4G/5G Bluetooth Gateway
Explosion-proof IoT gateway
UWB Module
nRF52832/DW1000 UWB Module
nRF52840/DW1000 UWB Module
GD32F130G8U6/DW1000 UWB Module
UWB Ranging Module
Long Distance UWB Module
UWB Anchor
TWR UWB Ranging Anchor
TDOA UWB Positioning Anchor
UWB Positioning Anchor Antenna
UWB Positioning Engine Server
UWB Tag
UWB Card Tag
UWB Bracelet Tag
UWB Asset Tracking Tag
GPS Tracker
Vehicle GPS Tracker
Pet GPS Tracker
2G GPS Tracker
3G GPS Tracker
4G GPS Tracker
Demo Kit & Software
GPS Module Demo Kit
WFI Module Demo Kit
Bluetooth Module Demo Kit
UWB System Demo Kit
Bluetooth Printer And Software Kit
IoT Gateway Management System
Solution
Asset Tracking
Forklift Anti-collision
Coal Mine Solution
Cattle Ear Tag Solution
Hospital Solution
Indoor Positioning
GNSS Positioning
IoT Solution
Smart Home
Smart Building
Tracker Solution
Indoor & Outdoor Positioning
Customization
News
Contact
GET A FREE SAMPLE
--><br>SHARES
Comprehensive understanding of Beidou short message communication
low power
power supply
-->
--><br>SHARES
2024-07-25/ By Admin
The Beidou system integrates Beidou short message communication with the characteristics of mixed constellations and system advantages to achieve integrated communication and navigation. The Beidou system exclusively achieves short message function and communication integration through active positioning RDSS. The Beidou short message SMS service is divided into SMS services provided to users in the Asia Pacific region and SMS services provided to users worldwide. The regional SMS adopts the RDSS system, and users cannot independently complete distance calculation. They need to send positioning requests and information to GEO satellites, which forward them to the ground center. The ground center completes the user's position calculation and transmits the position and related information back to the user through the satellite. RDSS adopts an active system with limited user capacity, and Beidou-3 has significantly expanded the regional SMS service capacity. When a handheld terminal sends a short message, the current location information can be simultaneously sent to the platform or other terminals, and the platform and terminal can parse or display the sender's latitude and longitude.
The process of sending short messages is as follows:
1) The short message sender first encrypts the communication request signal containing the receiver's ID number and communication content, and forwards it to the station via satellite;
2) After receiving the communication request signal, the ground center station adds it to the continuously broadcasted outbound broadcast message after decryption and re encryption, and broadcasts it to users via satellite;
3) The receiving user machine receives the outbound signal, demodulates and decrypts the outbound message, and completes one communication. The transmission delay of short message communication is about 0.5 seconds, and the highest frequency of communication is also once per second.
Generalized RDSS system: The user machine receives RDSS and RNSS1 signals broadcasted by a GEO satellite, as well as RNSS2 signals from at least one MEO or IGSO satellite. The user machine measures the time difference between RNSS2 and RNSS1 signals, and then sends this parameter to the control station through GEO satellites. The main control station can use these parameters to calculate the user's machine position and perform bidirectional timing. The user machine can communicate with the main control station in both directions through GEO satellites.
RNSS+message communication system: using RNSS signals from the Beidou Navigation Constellation for user position...