vlg GNSS Antenna

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

　　VLG GNSS antennas are designed with "signal acquisition as the core and scenario requirements as the guide," adapting to the four major satellite systems: BeiDou, GPS, GLONASS, and Galileo. They are divided into three categories based on application scenarios and positioning accuracy requirements, covering signal needs across all scenarios from "consumer-grade meter-level positioning" to "surveying-grade centimeter-level positioning":

　　1. Consumer-grade GNSS Antenna (Meter-level Positioning Adaptation)

　　Features: Miniaturized design, including an LDS laser-engraved antenna (thickness ≤0.3mm, area ≤10cm², supports SMT mounting) and an FPC flexible antenna (bending radius ≤5mm, adaptable to curved devices). Some models are pre-integrated with VLG Trackers and children's watches (hidden installation, does not affect device appearance);

　　Core Parameters:

　　Frequency Band Coverage: BeiDou B1I, GPS L1, GLONASS G1 (multi-constellation compatible);

　　Gain and Loss: Gain 2-5dBi (omnidirectional radiation, elevation angle 5°~90°) Signal coverage), insertion loss ≤1.0dB (low signal attenuation, ensuring receiver sensitivity); Power consumption and environment: Adapted to consumer-grade low-power requirements (no external power supply, relies on receiver power), operating temperature -20℃~70℃, protection rating IP54 (resistant to daily dust/splashing); Typical applications: Children's smartwatches (in conjunction with GNSS receivers, outdoor positioning accuracy ≤3 meters), pet trackers (track recording, 30% longer battery life), consumer-grade drones (hovering positioning, wind interference resistance), paired with VLG consumer-grade WiFi modules to achieve "location data + Bluetooth anti-loss" linkage.

　　2. Industrial-grade GNSS Antenna (Sub-meter to Decimeter-level Positioning Adaptation)

　　Features: External mount (IP65 protection, ABS + fiberglass housing), board mount (suitable for industrial rack and rail mounting), standard SMA/N RF interface (can be directly connected to VLG industrial-grade GNSS receivers), some models come with a magnetic base (for temporary outdoor mounting, easy installation);

　　Core Parameters:

　　Frequency Coverage: Beidou B1I/B2a, GPS L1/L5, GLONASS G1, Galileo E1 (multi-band compatible, supports SBAS satellite-based augmentation);

　　Interference Resistance and Gain: Gain 5-10dBi (directional/omnidirectional selectable, directional model elevation coverage 10°~80°), shielding effectiveness ≥60dB (aluminum-magnesium alloy shielding cover + electromagnetic absorption material, resisting interference from industrial frequency converters and motors);

　　Environmental Adaptability: Operating temperature -40℃~85℃, salt spray resistance 1000 Hourly (5% NaCl concentration, conforming to ISO 9227), vibration resistant 10-2000Hz (acceleration 15G, conforming to ISO 16750-3); Typical applications: Industrial AGV navigation (in conjunction with GNSS receivers, decimeter-level positioning accuracy ≤0.3 meters), mining equipment tracking (underground + ground dual-mode positioning, signal penetration improved by 40%), smart grid inspection (pole position recording, resistant to strong electromagnetic interference), and linkage with VLG industrial gateways to achieve synchronous transmission of "positioning data + equipment status".

　　3. Surveying-grade GNSS Antenna (Centimeter-level Positioning Adaptor)

　　Form and Features: Integrated (including high-gain choke antenna, weight ≤300g, portable and handheld), base station type (fixed installation, supports network RTK differential, dimensions ≤200mm×200mm×100mm), using low-loss RG-58 RF cable (length 1-5m selectable, signal attenuation ≤0.5dB/m);

　　Core Parameters:

　　Frequency Band Coverage: Full-band BeiDou (B1I/B1C/B2a/B2b/B3I), GPS (L1/L2/L5), GLONASS (G1/G2), Galileo (E1/E5a/E5b) (full constellation compatible, supports high-precision differential);

　　Accuracy and Interference Resistance: Gain 10-15dBi (choke design, multipath suppression ratio ≥40dB, reducing ground reflection signal interference), phase center offset ≤1mm (ensuring static mapping accuracy); Differential adaptation: supports network RTK (RTCM 3.2 protocol) and local RTK (radio differential), achieving centimeter-level positioning in conjunction with VLG mapping-grade GNSS receivers; Typical applications: engineering surveying (road and bridge construction layout, static accuracy ≤5mm), power line surveying (tower site selection, dynamic RTK accuracy ≤10mm), land rights confirmation (land parcel boundary measurement, data consistency ≥99.9%), achieving high-speed differential data transmission (latency ≤50ms) when paired with VLG 4G/5G modules.

　　II. Core Technical Features (Integrated VLG Positioning Ecosystem Capabilities)

　　1. Multi-Constellation Compatibility and Signal Optimization

　　Full-Band Coverage: Supports high-precision frequency bands such as BeiDou-3 global networking signals (B2a/B3I), GPS L5, and Galileo E5a. The number of satellites acquired is increased by 50% compared to single-band antennas. In weak signal scenarios such as urban canyons and dense forests, the receiver's positioning success rate is increased from 75% to 98% (e.g., AGVs can still maintain stable positioning in metal-obstructed areas of a workshop).

　　Low-Loss Design: Utilizes a low-dielectric-constant substrate (FR4 + ceramic composite material, dielectric constant ≤3.0) and a gold-plated RF interface (contact resistance ≤5mΩ). Signal transmission loss is ≤1.0dB (consumer grade) / ≤0.5dB (industrial/surveying grade), improving signal utilization by 30% compared to traditional antennas, ensuring the receiver can still operate normally in weak signal areas (such as basements and underground).

　　2. Interference Resistance and Extreme Environment Adaptability

　　Industrial-grade Interference Resistance: The industrial version adopts "double-layer shielding + adaptive filtering" technology, achieving interference attenuation ≥65dB in the 200MHz-2.7GHz frequency band. It can withstand strong electromagnetic interference from frequency converters and welding machines in industrial workshops, with a receiver positioning data error rate ≤0.001% (e.g., no jumps in positioning of equipment in underground mines);

　　Harsh Environment Adaptability:

　　Consumer-grade: Temperature resistant -20℃~70℃, sweat-proof and corrosion-resistant (suitable for long-term wear in children's watches);

　　Industrial-grade: IP65 protection (immersion in 1 meter of water for 30 minutes without failure), salt spray resistance for 1000 hours (suitable for offshore platforms and coastal power plants);

　　Surveying-grade: IP67 protection, UV exposure resistance for 2000 hours (performance attenuation ≤3%, suitable for field surveying);

　　Vibration and Shock Resistance: The industrial/surveying-grade antenna passes a 1.5-meter drop test (cement ground, no damage to the casing), and its vibration resistance meets the requirements. ISO 16750-3 (10-2000Hz, acceleration 15G), suitable for vibration environments such as AGVs and mining machinery.

　　3. Deep Integration with VLG Positioning Products

　　Antenna-Receiver Pre-Adaptation: All models are pre-integrated and debugged with VLG GNSS receivers (consumer-grade M1, industrial-grade D1, surveying-grade C1), requiring no additional calibration from the customer. Signal matching accuracy is ≥98%, and the integration cycle is shortened from 2 weeks to 1 day (e.g., after integrating a consumer-grade antenna with a tracker, positioning accuracy directly reaches ≤3 meters);

　　Tracker/Gateway Integration: The industrial-grade antenna collaborates with the VLG tracker. When the tracker collects equipment vibration data, the antenna ensures stable positioning signals. After data preprocessing through the VLG industrial gateway, the synchronization delay between positioning and status data is ≤100ms (e.g., in mining equipment tracking, "location + fault warning" can be achieved simultaneously);

　　Low-Power Integration: The consumer-grade antenna requires no additional power supply, relying on the GNSS receiver/tracker for power (operating current ≤5mA). Combined with the tracker's "intermittent positioning" mode, device battery life is extended from 2 days to 7 days (e.g., pet trackers do not require frequent charging). III. Typical Application Scenarios (Related to the VLG Positioning Ecosystem)

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

　　Solution Combination: VLG Consumer-Grade LDS GNSS Antenna (Miniature) + Consumer-Grade GNSS Receiver (M1) + Tracker + Children's Watch Case;

　　Application Logic: The antenna is hidden and mounted inside the watch face (thickness ≤ 0.3mm, does not affect the watch's thickness), working in conjunction with the receiver to achieve BeiDou + GPS dual-mode positioning, with outdoor accuracy ≤ 3 meters;

　　Parents can set up electronic fences via the APP (e.g., 500 meters around a school). When a child crosses the boundary, the antenna ensures the receiver quickly acquires satellite signals, sending a location alarm within 10 seconds;

　　In intermittent positioning mode (1 time/minute), the antenna's low-loss characteristics reduce signal transmission power consumption, extending the watch's battery life from 2 days to 7 days;

　　Key Achievements: Positioning accuracy ≥ 98%, device battery life improved by 250%, parent satisfaction reached 92% (based on 1000 user surveys). 2. Industrial AGV Navigation Scenario (Smart Factory)

　　Solution Combination: VLG Industrial-Grade Directional GNSS Antenna (IP65) + Industrial-Grade GNSS Receiver (D1) + Industrial Gateway + AGV Controller;

　　Application Logic:

　　The antenna is mounted on top of the AGV (with a magnetic base for easy removal), providing 8dBi gain directional coverage (elevation angle 10°~80°), supporting SBAS satellite-based augmentation, and the receiver's positioning accuracy is ≤0.3 meters;

　　In areas obstructed by metal shelves in the workshop, the antenna's anti-interference design (shielding effectiveness ≥60dB) ensures the receiver does not lose signal, and the AGV's trackless navigation is collision-free (deviation ≤0.1 meters);

　　Positioning data is transmitted to the AGV scheduling system via the industrial gateway, linked with production order data, improving AGV transportation efficiency by 35%;

　　Key Achievements:

　　AGV navigation costs reduced by 60% (no need for magnetic strips/QR codes), positioning deviation ≤0.3 meters, and workshop scheduling efficiency improved by 35%.

　　3. Surveying and Mapping Scenario (Road Construction / Power Pole Site Selection)

　　Solution Combination: VLG Surveying-Grade Choke GNSS Antenna (Integrated) + Surveying-Grade GNSS Receiver (C1) + 4G Differential Module + Handheld Tablet;

　　Application Logic: The antenna, paired with the receiver, enables network RTK differential (access to the national CORS station). The choke design reduces ground reflection interference, achieving static mapping accuracy ≤5mm (planar); Engineers use handheld devices to collect road layout points and power pole coordinates. The antenna's high gain (15dBi) ensures stable satellite acquisition even in dense forest areas (≥8 satellites); Data is synchronized to the backend platform via the 4G differential module to generate digital topographic maps, avoiding errors from manual recording;

　　Key Achievements: 50% increase in surveying efficiency (compared to traditional total stations), data error ≤5mm, and 40% reduction in power line surveying costs.

　　IV. Technology Adaptation and Compliance Certification

　　1. Synergistic Value with the VLG Positioning Ecosystem

　　Plug-and-Play Hardware: Pre-integrated with VLG GNSS receivers, Trackers, and industrial gateways, with standardized interfaces (SMA/N type), eliminating the need for customer-developed drivers. For example, direct connection of an industrial-grade antenna to the receiver achieves decimeter-level positioning accuracy without calibration.

　　Complementary Performance Enhancement: The antenna's low-loss characteristics improve receiver sensitivity (adding 3 more satellites to be acquired in weak signal areas), and its anti-interference design reduces the receiver's data error rate (from 0.1% to 0.001%). The synergy between these two features improves positioning stability by 40% compared to a "third-party antenna + receiver" combination.

　　Cost Optimization: Bulk purchasing of "antenna + receiver" combinations can reduce procurement costs by 20% (compared to individual purchases), while also reducing integration and debugging time (from 2 weeks to 1 day). 2. Compliance and Certification

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

　　Industry Standards:

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

　　Mapping Grade: Compliant with GB/T 18314-2021 "Global Navigation Satellite System (GNSS) Measurement Specification" and ISO 12817 (GNSS Antenna Performance Testing Standard);

　　Environmental Compliance: All materials comply with RoHS 2.0 and REACH regulations. The mapping grade antenna uses a recyclable aluminum alloy shell (60% improvement in environmental friendliness). The consumer grade antenna substrate is BPA-free (complies with child safety standards).

　　V. Selection Recommendations (Matching Core Parameters Based on Scenarios)

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

　　Recommended Model: VLG-GNSS-Antenna-Consumer-LDS (LDS Laser Engraved Version)

　　Core Parameters: Thickness ≤ 0.3mm, Gain 2-5dBi, Insertion Loss ≤ 1.0dB, Operating Temperature -20℃~70℃

　　Compatible Product Combination: VLG Consumer-Grade GNSS Receiver (M1) + Tracker + Bluetooth Module, meeting the requirements of low power consumption and small size.

　　Industrial-grade positioning scenarios (AGV / Mining equipment)

　　Recommended model: VLG-GNSS-Antenna-Industrial-Dir (directional)

　　Key parameters: Gain 5-10dBi, Shielding effectiveness ≥60dB, IP65 protection, Temperature resistance -40℃~85℃

　　Compatible product combination: VLG industrial-grade GNSS receiver (D1) + industrial gateway + UHF RFID reader/writer, achieving decimeter-level positioning and anti-interference requirements.

　　Surveying-grade positioning scenarios (Engineering survey / Power site selection)

　　Recommended model: VLG-GNSS-Antenna-Survey-Chock (choke coil)

　　Key parameters: Gain 10-15dBi, Phase center offset ≤1mm, IP67 protection, Full-band coverage

　　Compatible product combination: VLG surveying-grade GNSS receiver (C1) + 4G differential module + handheld tablet, meeting centimeter-level static/dynamic surveying needs. Special Environment Scenarios (Offshore Platforms / Downhole)

　　Recommended Model: VLG-GNSS-Antenna-Special-Ex (Explosion-proof and Waterproof)

　　Key Parameters: IP68 protection, 2000-hour salt spray resistance, explosion-proof certification Ex d IIC T4 Ga, temperature resistance -40℃~85℃

　　Compatible Product Combinations: VLG Industrial Grade GNSS Receiver (D1) + Mining Tracker + Signal Amplifier Large-scale equipment to meet positioning needs in extreme environments.