vlg GNSS Receiver

　　I. Core Positioning and Product Classification (By Accuracy + Application Scenarios)

　　VLG GNSS receivers are based on "multi-constellation fusion positioning as the core, and industry demand as the guide," integrating four major global satellite systems: BeiDou, GPS, GLONASS, and Galileo. They are divided into three categories based on positioning accuracy and application scenarios, covering all needs from "meter-level consumer" to "centimeter-level mapping":

　　1. Consumer-grade GNSS Receivers (Meter-level Accuracy)

　　Form Features: Miniature modular (size ≤25mm×15mm×3mm, supports SMT mounting), integrated (pre-integrated with VLG Tracker and children's watches), some models have built-in LDS laser-engraved antennas (thickness ≤0.3mm, suitable for confined spaces);

　　Core Parameters:

　　Positioning Accuracy: Outdoor open scenes ≤3 meters, urban canyons ≤5 meters, indoor weak signal (GNSS+LBS fusion) ≤10 meters;

　　Constellation Compatibility: BeiDou-3 + B1I, GPS L1 C/A, GLONASS G1; Power consumption performance: Operating current ≤20mA (continuous positioning), standby current ≤5μA (intermittent positioning, 1 time/minute), compatible with battery-powered devices; Typical applications: Children's smartwatches (positioning + safety fence), pet trackers (track recording), consumer drones (hovering positioning), working in conjunction with VLG consumer-grade WiFi/Bluetooth modules to achieve integrated "positioning data + Bluetooth anti-loss" functionality.

　　2. Industrial-grade GNSS Receiver (Sub-meter to Decimeter Accuracy)

　　Form Factor: Board-type (supports DIN rail mounting, compatible with industrial cabinets), external mount (IP65 protection, compatible with outdoor equipment), standard SMA antenna interface (expandable to VLG high-gain ceramic antenna);

　　Core Parameters:

　　Positioning Accuracy: Sub-meter (≤0.8 meters in open outdoor scenarios), Decimeter (≤0.3 meters with SBAS satellite-based augmentation enabled);

　　Constellation Compatibility: BeiDou-3 + B1I/B2a, GPS L1/L5, GLONASS G1, Galileo E1/E5a;

　　Environmental Adaptability: Operating temperature -40℃~85℃, vibration resistant (10-2000Hz, 15G acceleration, compliant with ISO 16750-3), electromagnetic interference resistant (shielding effectiveness ≥60dB, suitable for industrial workshop electromagnetic environments);

　　Typical Application: Industrial AGV Positioning (decimeter-level navigation within the workshop), mining equipment tracking (underground + surface dual-mode positioning), and smart grid inspection (pole and tower position recording), in collaboration with VLG industrial routers and edge gateways, enables synchronous transmission of "positioning data + equipment status".

　　3. Surveying-grade GNSS Receiver (Centimeter-level accuracy)

　　Form and Features: Integrated (including high-gain choke antenna, weight ≤1.5kg, portable handheld), base station type (fixed installation, supports network RTK differential);

　　Core Parameters:

　　Positioning Accuracy: Static surveying ≤5mm+1ppm (plane)/10mm+1ppm (elevation), dynamic RTK ≤10mm+1ppm (plane)/20mm+1ppm (elevation);

　　Constellation Compatibility: Full-band BeiDou (B1I/B1C/B2a/B2b/B3I), GPS (L1/L2/L5), GLONASS (G1/G2), Galileo (E1/E5a/E5b);

　　Differential Mode: Supports network RTK (CMR/CMRx/RTCM 3.0/3.2), local... RTK (Differential Radio, transmission distance ≤10km); Typical applications: engineering surveying (road and bridge construction layout), power line surveying (tower site selection), land rights confirmation (land parcel boundary measurement), working in conjunction with VLG industrial-grade 4G/5G modules to achieve high-speed differential data transmission (latency ≤50ms).

　　II. Core Technical Features (Integration of VLG Core Capabilities)

　　1. Multi-Constellation Fusion and Accuracy Optimization

　　Full System Compatibility: Supports BeiDou-3 global network signals (B2a/B3I) and high-precision frequency bands such as GPS L5 and Galileo E5a, increasing the number of satellite acquisitions by 30% (compared to a single GPS system). Positioning success rate in weak signal scenarios such as urban canyons and dense forests increases from 75% to 98%.

　　Dynamic Accuracy Compensation: Built-in "multipath suppression algorithm" (borrowing from VLG timing antenna phase optimization technology) reduces interference from building and water surface reflections by identifying reflected signal characteristics, reducing positioning deviation by 40% in dynamic scenarios (such as high-speed moving AGVs).

　　Satellite-Based Augmentation Support: Compatible with Chinese BDS B1I SBAS, US WAAS, and European EGNOS satellite-based augmentation systems, achieving decimeter-level positioning (accuracy ≤0.3 meters) without additional differential base stations, suitable for remote areas without terrestrial differential networks.

　　2. Anti-interference and Environmental Adaptability

　　Electromagnetic Interference Suppression: Employing a "double-layer shield (aluminum-magnesium alloy + electromagnetic absorption material) + adaptive filtering technology," interference attenuation is ≥65dB and positioning data error rate is ≤0.001% (industrial grade) in strong electromagnetic environments such as industrial frequency converters and medical equipment (200MHz-2.7GHz).

　　Extreme Environment Adaptability:

　　Industrial Grade: Temperature resistant -40℃~85℃, salt spray resistant (1000 hours, 5% NaCl concentration, conforming to ISO 9227), suitable for marine platforms and underground mining scenarios.

　　Surveying Grade: Waterproof and dustproof IP67 (immersion in 1 meter water for 30 minutes without failure), UV resistant (performance degradation ≤3% after 2000 hours of exposure), suitable for field surveying scenarios.

　　Low Power Consumption Design: Consumer-grade adopts an "intermittent positioning + sleep/wake-up" mode (daily power consumption ≤1mAh when positioning interval is 1 minute), while industrial-grade dynamically adjusts the signal sampling rate (1Hz in static mode, ≤0.001% in dynamic mode). 10Hz), power consumption reduced by 50%, compatible with battery-powered IoT devices (such as Trackers).

　　3. Hardware Collaboration and Ecosystem Integration

　　Deeply compatible with VLG antennas: Consumer-grade devices integrate VLG LDS micro-antennas (40% smaller size, compatible with children's watches); industrial-grade devices pair with VLG high-gain ceramic antennas (38dB gain, 2x extended positioning distance); surveying-grade devices come standard with VLG choke antennas (multipath rejection ratio ≥40dB, improving static accuracy);

　　Collaborative with Trackers/Gateways: Industrial-grade receivers integrate with VLG Trackers to achieve "asset positioning + status monitoring" (e.g., simultaneous vibration data collection while locating mining equipment). Data is pre-processed through a VLG industrial gateway before uploading, with a latency ≤100ms;

　　Integrated with medical equipment: In medical rescue scenarios, receivers collaborate with VLG vital signs sensors, binding and transmitting ambulance positioning data with patient heart rate and blood oxygen data. Emergency centers can plan the optimal route in real time (combined with traffic congestion data), reducing rescue time by 20%.

　　III. Typical Application Scenarios (Related to Previous Solutions)

　　1. Consumer-Grade Positioning Scenarios (Children/Pets/Portable Devices)

　　Solution Combination: VLG Consumer-Grade GNSS Receiver (Miniature Module) + Tracker + Children's Watch Case + Mobile App;

　　Application Logic: The receiver is integrated into the children's watch, supporting BeiDou + GPS dual-mode positioning (outdoor accuracy ≤3 meters). Parents set up electronic fences via the app (e.g., 500 meters around a school). When the child crosses the boundary, the watch triggers an audible and visual alarm and simultaneously pushes the location to the parent's mobile phone;

　　In intermittent positioning mode (1 time/minute), the watch's battery life is extended from 2 days to 7 days. With a VLG Bluetooth module, it supports "near-range anti-loss" (alarm when the watch and parent's mobile phone are more than 10 meters apart);

　　Key Achievements: Positioning accuracy ≥98%, electronic fence response time ≤10 seconds, parent satisfaction increased by 92% (based on 1000 user surveys). 2. Industrial AGV Navigation Scenarios (Smart Factory/Logistics Warehouse)

　　Solution Combination: VLG Industrial-Grade GNSS Receiver (Decimeter-Level) + Industrial Gateway + AGV Controller + VLG UHF RFID Reader;

　　Application Logic: The receiver is installed on top of the AGV, with SBAS satellite-based augmentation enabled (accuracy ≤0.3 meters), outputting AGV position data to the controller in real time, enabling trackless navigation within the workshop (no need to lay magnetic strips/QR codes);

　　VLG RFID readers are deployed at key nodes in the warehouse. When an AGV approaches a node via the receiver, the reader scans the AGV tag, calibrating the positioning deviation (error reduced to ≤0.1 meters), preventing AGV collisions;

　　Key Achievements: AGV navigation costs reduced by 60% (no track modification required), positioning deviation ≤0.3 meters, workshop AGV scheduling efficiency improved by 35%.

　　3. Medical Rescue Scenario (Ambulance / Wilderness Emergency)

　　Solution Combination: VLG Industrial-Grade GNSS Receiver (Sub-meter Accuracy) + Ambulance Onboard Terminal + VLG Vital Signs Sensor + Hospital Emergency Platform;

　　Application Logic: The receiver is mounted on the top of the ambulance to collect real-time vehicle location data (outdoor accuracy ≤ 0.8 meters). The data is uploaded to the hospital emergency platform via a VLG 4G module. The platform combines real-time traffic data to plan the optimal route;

　　Medical personnel collect patient heart rate and blood oxygen data using the VLG vital signs sensor, which is then transmitted in conjunction with the location data. The hospital can prepare emergency equipment in advance (such as operating rooms and blood reserves);

　　Key Achievements: Average ambulance arrival time reduced by 15%, emergency preparation time reduced by 25%, and patient treatment success rate increased by 10% (data from a tertiary hospital emergency center).

　　4. Engineering Surveying Scenario (Road Construction / Power Line Survey)

　　Solution Combination: VLG surveying-grade GNSS receiver (centimeter-level accuracy) + handheld tablet + 4G differential module + surveying software;

　　Application Logic: The receiver uses network RTK differential (connected to the national CORS station), achieving static surveying accuracy ≤5mm. Engineers use a handheld tablet to collect data on road construction layout points and power pole locations;

　　Data is synchronized in real-time to the backend surveying platform via the VLG 4G module, generating digital topographic maps and pole coordinate reports, avoiding errors from manual recording;

　　Key Achievements: Surveying efficiency improved by 50% (compared to traditional total stations), data error ≤5mm, power line surveying costs reduced by 40%. IV. Technology Adaptation and Compliance Certification

　　1. Synergistic Value with the VLG Ecosystem

　　Antenna Synergy: The receiver is pre-adapted to all VLG GNSS antennas, requiring no additional debugging. For example, consumer-grade receivers use LDS antennas, industrial-grade receivers use ceramic antennas, and surveying-grade receivers use choke coil antennas, with signal transmission loss ≤2dB (10-meter distance).

　　Module Integration: Synergizes with VLG 4G/NB-IoT modules and edge gateways, allowing location data to be directly accessed through the VLG IoT platform and industrial management platform, reducing the integration cycle from 2 weeks to 1 week.

　　Low-Power Integration: Shares a power management module with VLG low-power sensors (such as Trackers and vital signs sensors), reducing overall power consumption by 30% and adapting to battery-powered scenarios.

　　2. Compliance and Certification

　　International Certifications: Certified by SRRC (China), CE-RED (EU), FCC ID (USA), and TELEC (Japan); compliant with 3GPP TS 38.104 (5G Positioning Collaboration Standard);

　　Industry Standards:

　　Industrial Grade: Compliant with IEC 61000-6-2 (Industrial Electromagnetic Compatibility) and ISO 16750-3 (Automotive Electronic Environment);

　　Surveying Grade: Compliant with GB/T 18314-2021 "Global Navigation Satellite System (GNSS) Measurement Specification";

　　Medical Rescue Grade: Compliant with ISO 13485 Medical Equipment Quality Management System (compatible with ambulance emergency equipment);

　　Environmental Compliance: All materials comply with RoHS 2.0 and REACH regulations. The surveying grade receiver uses a recyclable aluminum alloy shell, improving environmental friendliness by 60%. V. Selection Recommendations (Accuracy and Parameter Matching Based on Scenarios)

　　Consumer-Grade Positioning Scenarios (Children's Watches / Pet Trackers)

　　Recommended Model: VLG-GNSS-Consumer-M1 (Miniature Module)

　　Core Parameters: Positioning accuracy ≤ 3 meters (outdoor), power consumption ≤ 20mA (continuous positioning), size ≤ 25mm × 15mm × 3mm

　　Compatible Product Combinations: VLG Tracker + Bluetooth Module + Children's Watch Case, meeting the requirements of low power consumption and small size.

　　Industrial AGV / Equipment Tracking Scenarios

　　Recommended Model: VLG-GNSS-Industrial-D1 (Decimeter-Level)

　　Core Parameters: Positioning accuracy ≤ 0.3 meters (SBAS Enhanced), temperature resistance -40℃~85℃, vibration resistance 15G

　　Compatible Product Combinations: VLG Industrial Gateway + AGV Controller + UHF RFID Reader/Writer, achieving high-precision navigation and deviation calibration.

　　Medical Rescue Scenarios (Ambulance/Emergency Services)

　　Recommended Model: VLG-GNSS-Industrial-A1 (Sub-meter Level)

　　Key Parameters: Positioning accuracy ≤ 0.8 meters (outdoor), IP65 protection, data transmission latency ≤ 50ms

　　Compatible Product Combinations: VLG vital signs sensor + 4G module + hospital emergency platform, enabling location and patient data collaboration.

　　Engineering Surveying Scenarios (Construction/Survey)

　　Recommended Model: VLG-GNSS-Survey-C1 (Centimeter Level)

　　Key Parameters: Static accuracy ≤ 5mm + 1ppm, supports network RTK, IP67 protection

　　Compatible Product Combinations: Handheld tablet + 4G differential module + surveying software, meeting high-precision surveying and data synchronization requirements.