Radar Beacon Positioning for Signal-Blocked Environments
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Solution Overview
Problem
Satellite positioning signals are often blocked or weak in certain environments, making accurate positioning difficult or impossible.
Innovation Solution
A radar positioning method that utilizes a radar beacon combination to determine distances to multiple beacons and calculates position information based on these distances and pre-stored beacon positions, incorporating error correction and precision estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If satellite positioning technology is used, then positioning can be achieved in open environments, but positioning fails or becomes inaccurate in environments where satellite signals are blocked or weak
Solution Approach 1:
The patent introduces radar beacons as intermediary objects deployed in the environment to reflect radar signals. These beacons serve as mediators between the radar positioning system and the target object, enabling positioning through signal reflection when direct satellite signals are blocked. The beacons are positioned at known locations and reflect radar waves back to the positioning radar, allowing distance and position calculation without requiring direct line-of-sight to satellites.
Solution Approach 2:
The patent replaces the satellite-based electromagnetic signal reception system with a radar-based active detection system. Instead of passively receiving satellite positioning signals, the system actively transmits radar signals and detects their reflection from beacons. This substitution enables positioning in environments where passive satellite signal reception fails, as radar signals can be actively managed and reflected by strategically placed beacons.
2Measurement precision
If radar beacon combination is used for positioning, then positioning accuracy is improved in signal-blocked environments, but system complexity increases due to multiple beacons and error correction mechanisms
Solution Approach 1:
The patent divides the positioning system into multiple independent radar beacons distributed at different known locations. Each beacon independently reflects radar signals, providing separate distance measurements. This segmentation allows the system to calculate position through triangulation or multilateration, improving accuracy while maintaining modular simplicity where each beacon is a standalone component.
Solution Approach 2:
The patent implements error correction mechanisms that use feedback from multiple distance measurements to refine position calculations. The system calculates initial position estimates from each beacon pair, then iteratively corrects errors by comparing measurements and adjusting calculations. This feedback loop improves positioning accuracy by compensating for measurement errors, atmospheric effects, and beacon position uncertainties.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides accurate position information even in environments where satellite positioning signals are weak or absent, with high precision and reliability.
Implementation Method 1
a transmitting apparatus and a receiving apparatus, where the transmitting apparatus is configured to sends a transmitted electric wave in a predetermined direction
Implementation Method 2
the receiving apparatus is configured to receive reflection data of a radar beacon combination, where the radar beacon combination includes a plurality of beacons, and the reflection data is an echo signal reflected by each of the beacons
Data Source
AI summary
The present disclosure discloses a radar positioning method, a positioning radar and a positioning system. Reflection data of a radar beacon combination is received, a distance from a target object to each beacon is determined based on the reflection data, and position information of the target object is determined based on a distance from the target object to each beacon and pre-stored position information of each beacon. Thus, accurate position information may be provided where a satellite positioning signal of the target object is weak or there is no satellite positioning signal.