Method and System for Position Determination of at Least One Object

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This invention describes a method and a system for accurately determining the position of objects, especially within buildings, using at least four transmitters that send circularly polarized radio signals at closely spaced but different frequencies. The receiver to be located uses these signals to compute its position, with the polarization and frequency arrangement specifically designed to minimize errors from signal reflections and multipath effects common indoors. The system also introduces a compact and cost-effective antenna design suitable for small devices.

Use CasesContent extracted from patent full text and abstract with AI.

• Indoor navigation systems for people or assets in warehouses, shopping malls, airports, or office buildings.
• Robotics and automation for precise indoor movement or navigation.
• Tracking of goods, equipment, or personnel in manufacturing or hospital environments.
• Smart building management, such as locating maintenance personnel or critical assets.
• Emergency response, enabling first responders to locate people or equipment in complex indoor situations.
• Augmented or virtual reality systems requiring accurate indoor localization of users or equipment.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables highly accurate position determination indoors, even in environments with significant signal reflections (multipath).
• Reduces susceptibility to interference and signal noise from reflections due to the use of circular polarization and frequency planning.
• Allows for compact and low-power receiver designs, making the solution practical for small, mobile, or wearable devices.
• No need for complex code-multiplexing schemes, simplifying hardware and lowering costs.
• System design reduces the impact of multiple signal paths, a common problem for indoor localization accuracy.
• The compact antenna design is cost-effective and can be easily integrated into various electronic devices.

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Patent Abstract

The invention relates to a method and a system for determining the position of at least one object, in particular inside a building. In a method for determining the position of at least one object, at least four transmitters transmit circularly polarised signals and a receiver to be located receives the circularly polarised signals. At least two and in particular all transmitters transmit periodic signals of different frequencies, these frequencies being closely adjacent.