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Agricultural Antenna Case Study: Excellent Practices in Enabling Beidou Autonomous Driving for Agricultural Machinery

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I. Client Background

Our client is a pioneering company deeply engaged in agricultural technology and specializing in Beidou autonomous driving for agricultural machinery. They are committed to leveraging advanced Beidou satellite navigation and positioning technology to revolutionize agricultural production, helping farmers achieve precise sowing, fertilization, and irrigation, and advancing agricultural machinery operations towards unmanned and intelligent operations.


II. Client Requirements

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In developing a Beidou autonomous driving system for agricultural machinery, the client had stringent requirements for antennas. Agricultural machinery operates in complex environments, and signals are susceptible to various interference factors, such as high-voltage power lines and large metal irrigation equipment surrounding farmland. Therefore, an antenna with stable satellite signal reception and strong anti-interference capabilities was required. Furthermore, given that agricultural machinery operates in diverse terrain and climate conditions, from plains to mountainous terrain, and from scorching heat to bitter cold, the antenna needed to be able to withstand these harsh environments and maintain stable performance. Furthermore, high-precision positioning is fundamental to achieving precision agriculture, requiring antennas that support multiple frequencies and modes to obtain more accurate satellite positioning data and ensure minimal operational errors.

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III. Solution: GNSS Surveying Antenna

Based on customer needs, we supplied the GNSS Surveying Antenna from www.toxulink.com. This antenna offers the following significant advantages, perfectly suiting the customer's business scenario.

Multi-frequency and multi-mode support: The antenna can simultaneously receive signals from major global satellite systems, including Beidou, GPS, and GLONASS, and supports multiple frequency bands, such as L1, L2, and L5. This feature significantly improves signal stability and availability in complex environments. Signals from different satellite systems and frequency bands complement each other, ensuring sufficient signal for positioning calculations even when some signals are blocked or interfered with, providing continuous and stable positioning for autonomous agricultural machinery. For example, when operating in mountainous areas, the complex terrain can frequently block signals from a single satellite system. However, the multi-frequency and multi-mode GNSS Surveying Antenna can quickly switch to other available signals, maintaining accurate and continuous positioning.

Excellent anti-interference design: Utilizing advanced filtering algorithms and shielding structures. A carefully designed filtering circuit effectively filters out external electromagnetic interference signals, such as electromagnetic noise from nearby high-voltage power lines. Furthermore, a special shielding structure reduces the impact of multipath effects. Multipath occurs when satellite signals are reflected multiple times before being received by the antenna, increasing positioning errors. The antenna's shielding structure reduces the strength of these reflected signals, allowing the antenna to primarily receive direct signals from the satellite, significantly improving positioning accuracy. In real-world farmland environments, surrounding metal irrigation structures and buildings can generate reflected signals. The GNSS Surveying Antenna's multipath mitigation design ensures that agricultural machinery can accurately follow its pre-set path even in these conditions.

High stability in harsh environments: The antenna meets IP67/69 and higher standards for water and dust resistance, completely resisting dust intrusion and maintaining proper operation even when submerged in water to a certain depth. It operates stably in both paddy fields during torrential rain and dry, dusty farmland. It also features a wide operating temperature range, adapting to extreme temperatures from -30°C to 70°C. In the cold northern winters, low temperatures do not degrade antenna performance, nor do high temperatures in the scorching southern summers, which do not affect signal reception. Furthermore, the antenna is constructed of durable materials with excellent vibration and aging resistance. The strong vibrations generated by agricultural machinery traveling over uneven fields will not damage the antenna, and long-term outdoor use will not affect its performance due to aging, ensuring long-term stable service.

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High-precision positioning capability: Incorporating real-time kinematic (RTK) technology, the antenna achieves centimeter-level positioning accuracy, with horizontal accuracy ≤5cm and vertical accuracy ≤10cm, fully meeting the stringent high-precision positioning requirements of agricultural scenarios. During seeding operations, it can precisely control seeding row spacing with minimal error, ensuring uniform seed distribution, promoting crop growth and development, and increasing crop yields. During fertilization and irrigation operations, high-precision positioning ensures precise operation of agricultural machinery based on soil fertility and crop water requirements, avoiding resource waste and improving operational efficiency.​


IV. Application Results

Operation efficiency has been significantly improved: Using the Beidou agricultural machinery autonomous driving system equipped with a GNSS surveying antenna has increased the average daily operating area of ​​agricultural machinery by 40%. For example, a tractor could cultivate 10 mu (approximately 16 acres) per day using traditional manual operation, but with the autonomous driving system, it can cultivate 14 mu (approximately 16 acres) per day. This is primarily due to precise positioning and automated operation, which allows agricultural machinery to continuously operate along the optimal path, reducing time lost due to manual errors and frequent directional adjustments.

Costs have been significantly reduced: Precise operation reduces resource waste. Precise fertilization and irrigation, tailored to soil and crop needs, reduces pesticide and water use by approximately 30% compared to traditional methods. Furthermore, labor costs have been significantly reduced. Automated agricultural machinery operations have eliminated the need for significant human involvement, reducing labor costs by 30% to 60%.