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　　Multi-GNSS (Global Navigation Satellite System) high-precision antenna manufacturers focus on producing antennas that can simultaneously receive signals from multiple satellite constellations, such as GPS, GLONASS, Galileo, and BeiDou. These antennas are widely used in applications that require high-precision positioning, such as precision agriculture, geographic information systems (GIS), unmanned vehicles, drones, precision timing, and other fields. The following are several well-known multi-GNSS high-precision antenna manufacturers:

　　Internationally renowned manufacturers

　　Trimble Inc.

　　Introduction: Trimble is a leading global positioning solution provider, providing a wide range of high-precision GNSS antennas and other measurement equipment.

　　Product features: high precision, multi-band support, strong anti-interference ability.

　　Hexagon AB (NovAtel)

　　Introduction: NovAtel, a subsidiary of Hexagon, focuses on high-performance GNSS receivers and antennas for a variety of high-precision applications.

　　Product features: multi-band, multi-constellation support, especially suitable for use in dynamic environments.

　　Septentrio NV

　　Introduction: Known for its multi-band, high-precision GNSS receivers and antennas, especially suitable for use in complex environments.

　　Product Features: Provides high-precision, high-reliability, multi-band supported GNSS antennas.

　　Leica Geosystems AG

　　Introduction: Provides a range of high-precision GNSS antennas for engineering, construction and geodetic surveying with excellent performance.

　　Product Features: High precision, multi-constellation support, suitable for a variety of application scenarios.

　　Tallysman Wireless Inc.

　　Introduction: A Canadian company specializing in the design and manufacture of high-precision GNSS antennas.

　　Product Features: Supports multiple GNSS constellations and has good anti-interference performance.

　　ComNav Technology Ltd.

　　Introduction: One of China's leading GNSS equipment manufacturers, providing a variety of high-precision antenna solutions, including multi-constellation support.

　　Product Features: High cost-effective, supports multiple GNSS constellations, and is widely used in surveying and mapping, drones and other fields.

　　Beijing Sinomaps Star Technology Co., Ltd.

　　Introduction: Focuses on the research and development and production of GNSS antennas, providing high-precision antennas for domestic and foreign customers.

　　Product Features: Supports multiple GNSS constellations, and is widely used in surveying and mapping, drones and other fields.

　　Zhejiang JC Antenna Co., Ltd.

　　Introduction: Zhejiang JC Antenna Co., Ltd. is a professional multi-GNSS high-precision antenna manufacturer and supplier.

　　Product features: Provide high-precision antennas for multi-band and multi-GNSS systems, suitable for a variety of application scenarios.

　　PCTEL, Inc.

　　Introduction: PCTEL designs and manufactures a variety of high-gain, high-performance multi-GNSS antennas to meet stringent environmental standards.

　　Product features: High gain, multi-band, suitable for a variety of communication standards.

　　Taoglas Ltd.

　　Introduction: Taoglas is a leader in wireless communications, providing a variety of high-precision GNSS antennas.

　　Product features: High precision, multi-band, multi-GNSS system support, suitable for a variety of application scenarios.

　　Factors to consider when choosing a manufacturer

　　Product quality and technical specifications: Make sure the selected antenna meets your application requirements and has the necessary technical parameters and certifications (such as CE, FCC).

　　Technical support and service: Good after-sales service and technical support can help solve problems that may arise during use.

　　Price and delivery: Evaluate the supplier's price rationality and its ability to deliver on time based on the budget and project timeline.

　　Customer reviews and case studies: Refer to other customers' feedback and success stories to better understand the supplier's strength and reputation.