As the core component of high-precision positioning systems, the technical characteristics of RTK (Real-Time Kinematic) antennas directly determine the positioning accuracy, stability and environmental adaptability, which in turn affects its application value in various fields. The following is a detailed analysis of its advantages and corresponding application scenarios from the perspective of technical characteristics:

Core technical features and advantages

The design of RTK antenna revolves around "high precision, high stability, and strong anti-interference". The specific technical features and advantages are as follows:

①. Multi-band and multi-constellation compatible design

1. Technical features: Support multi-band signal reception of multiple satellite systems such as GPS (L1/L2/L5), Beidou (B1/B2/B3), GLONASS (G1/G2), Galileo (E1/E5), etc., and cover the 1.1GHz - 1.7GHz mainstream satellite band through wideband design.

2. Advantages:

1. Increase the number of satellites that can be received (usually 20-40 satellites can be tracked simultaneously), reduce the impact of signal shielding or interference of a single system, and improve positioning continuity.

2. Multi-band data fusion can eliminate ionospheric delay errors, static positioning accuracy can reach millimeter level, and dynamic positioning accuracy can reach centimeter level (1cm + 1ppm).

②. Low-noise amplification and anti-interference technology

1. Technical features: Built-in low-noise amplifier (LNA), the noise figure is usually ≤1.5dB, which can effectively amplify weak satellite signals (-160dBm level) without introducing too much noise; at the same time, it integrates multipath suppression circuit and narrowband filtering module to suppress ground reflection signals (multipath error) and co-frequency interference (such as 4G/5G base stations, microwave signals).

2. Advantages:

1. It can still stably receive signals in complex electromagnetic environments (such as urban high-rise buildings and industrial plants) to reduce positioning drift.

2. The multipath error can be controlled within 0.5m, which is much better than ordinary GNSS antennas (1-3m).

③. Phase center stability optimization

1. Technical features: Through symmetrical vibrator array design and phase center calibration, it is ensured that the deviation between the antenna phase center and the geometric center is ≤1mm, and the phase center change is ≤0.5mm at different satellite elevation angles (5°-90°).

2. Advantages: Avoiding systematic positioning errors caused by phase center offset is the key to achieving millimeter-level static mapping.

④、 Fast initialization and dynamic response capability

1. Technical features: Adopting optimized signal capture algorithm, cold start first positioning time (TTFF) ≤30 seconds, hot start ≤10 seconds; supporting continuous positioning at dynamic speeds above 100km/h, recapture time after loss of lock ≤2 seconds.

2. Advantages: Meet the real-time requirements of mobile scenarios (such as drones and vehicles) and avoid operation stagnation caused by signal interruption.

⑤. Environmental adaptability design

1. Technical features: The shell adopts IP67/IP68 waterproof and dustproof design, the operating temperature range is -40℃ - +85℃, anti-vibration (20g acceleration), anti-shock (100g peak), and some models integrate lightning protection modules (impedance ≥10kΩ, can withstand 10kV electrostatic discharge).

2. Advantages: It can work stably for a long time in harsh environments such as outdoor, high altitude, high temperature/low temperature, and reduce maintenance costs.

Typical application scenarios

Based on the above technical advantages, RTK antennas play a core role in scenarios that require high-precision positioning, including:

1. Surveying and mapping and geographic information fields

1. Applications: engineering surveying (road and bridge construction layout), topographic surveying, cadastral surveys, and real estate rights confirmation.

2. Demand matching: millimeter-level static accuracy can meet the error requirements between engineering drawings and the actual situation, and multi-constellation compatibility ensures signal coverage in mountainous areas, dense forests and other areas.

2. Precision agriculture

1. Applications: self-driving tractors, plant protection drones (variable fertilization/spraying), farmland boundary demarcation, and crop growth monitoring.

2. Demand matching: centimeter-level dynamic positioning can ensure that agricultural machinery operates along a straight line (row spacing deviation ≤5cm), and the anti-interference design adapts to the electromagnetic environment of open areas of farmland.

3. Drones and robots

1. Applications: surveying drones (3D modeling), logistics drones (precise landing points), and inspection robots (power/pipeline path tracking).

2. Demand matching: Fast initialization and dynamic response capabilities support real-time positioning of drones during high-speed flight, and anti-vibration design adapts to body bumps.

4. Intelligent transportation and autonomous driving

1. Applications: autonomous driving vehicles (lane-level positioning), port container trucks (precise docking at the yard), rail transit (train positioning and scheduling).

2. Demand matching: Multi-band anti-interference capabilities can maintain centimeter-level positioning in urban buildings to ensure vehicle driving safety.

5. Geology and disaster monitoring

1. Applications: landslide monitoring (millimeter-level displacement detection), bridge settlement monitoring, and post-earthquake terrain change analysis.

2. Demand matching: Phase center stability ensures the consistency of long-term monitoring data, and adaptability to harsh environments meets the needs of field deployment.

Summary

RTK antennas achieve high-precision and high-reliability positioning capabilities through multi-constellation multi-band compatibility, low-noise anti-interference, and phase center stability.The RTK antenna of BAT WIRELESS adopts these designs to meet customers' needs for high-precision application scenarios. Its application scenarios cover the entire field from static mapping to dynamic movement, and are the core components of the "signal entry" of modern high-precision location services.