Vehicle Path Computation Using Satellite Signal Strength
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Solution Overview
Problem
Conventional navigation systems fail to accurately compute vehicle paths in areas with high building concentrations, leading to degraded satellite signal reception and positioning errors, which can result in unreliable route guidance and potential navigation failures.
Innovation Solution
An apparatus and method that analyze satellite communication channel states by calculating propagation loss due to distance, obstacles, air, and weather conditions to select paths with optimal satellite signal strength, ensuring a communication channel with a predetermined receiving sensitivity is maintained, thereby providing accurate route guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional path computation methods are used that prioritize shortest path or shortest time, then path efficiency is improved, but satellite signal reception reliability deteriorates in areas with high building concentrations
Solution Approach 1:
The invention changes the path selection parameter from purely geometric (shortest distance) or temporal (shortest time) to include communication quality (satellite signal reception reliability). By incorporating satellite signal characteristics as a new parameter in path computation, the system selects paths that maintain both efficiency and reliable satellite communication, particularly avoiding areas with high building concentrations that block signals.
2Productivity
If paths are selected based on shortest distance or shortest time without considering satellite communication channel states, then path efficiency is improved, but positioning accuracy deteriorates in dangerous areas with poor satellite signal reception
Solution Approach 1:
The invention adds satellite communication channel state as a critical parameter in path computation. By evaluating satellite signal reception characteristics along candidate paths and selecting paths with favorable communication conditions, the system ensures both computational efficiency and high positioning accuracy, avoiding areas where building concentrations cause signal blockage and multi-path effects.
3Ease of operation
If conventional navigation systems provide route guidance without considering satellite communication channel states, then ease of operation is improved, but navigation reliability deteriorates when satellite signals are not received or receiving sensitivity is degraded
Solution Approach 1:
The invention performs preliminary analysis of satellite communication channel states along candidate paths before final path selection. By pre-evaluating satellite signal reception characteristics and identifying paths with reliable communication conditions, the system ensures navigation reliability is maintained while keeping the user interface simple and easy to operate.
Data Source
AI summary
Disclosed are an apparatus and method for computing a vehicle path by considering satellite communication channel states. The method includes: searching for a plurality of candidate paths, each path connected from a starting point to a destination; analyzing a satellite communication channel state with respect to each of the candidate paths, based on a receiving sensitivity of an electric wave received from a satellite; setting one of the candidate paths as a first path, based on the analyzed satellite communication channel states; and mapping the first path onto a map, and displaying the first path on a display unit.