Multi Range Radar System Using Time-Delayed Modulated Waves
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Solution Overview
Problem
Current radar systems face challenges in short-range applications due to the need for wider bandwidths and faster sweep times, which increase computation and power requirements, limiting the number of devices that can be used simultaneously, and in mid- and long-range systems, high F-beat values require more computation, leading to slower radar readings.
Innovation Solution
The method involves generating two modulated continuous waves with a predetermined time difference, allowing for the artificial adjustment of the distance between the radar system and the object, enabling sufficient frequency resolution for short-range detection while reducing the need for wider bandwidths and faster sweep times, and optimizing performance for specific ranges by mixing the received and transmitted signals to produce a beat signal for range determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wider bandwidth and faster sweep time are used for short-range radar detection, then detection accuracy is improved, but computation requirements and power consumption increase
Solution Approach 1:
The patent changes the time parameter by introducing a predetermined time difference between generating the first and second modulated continuous waves. This temporal parameter modification allows the system to achieve sufficient frequency resolution for short-range detection without requiring wider bandwidth, thereby reducing power consumption while maintaining detection accuracy
Solution Approach 2:
The patent dynamically adjusts the detection approach by using two different modulated continuous waves with a predetermined time difference. This dynamic temporal separation allows the mixer to produce distinct beat signals that provide sufficient frequency resolution without requiring the static high bandwidth and fast sweep times that would consume excessive power
2Measurement precision
If wider bandwidth and faster sweep time are used for short-range radar detection, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent modifies the temporal parameter by introducing a predetermined time difference between the generation of the first and second modulated continuous waves. This parameter change enables the system to achieve sufficient frequency resolution without requiring complex high-bandwidth hardware or fast sweep mechanisms, thereby reducing device complexity while maintaining detection accuracy
Solution Approach 2:
The patent introduces an intermediary temporal separation (predetermined time difference) between the transmission of the first and second modulated continuous waves. This intermediary time delay allows the mixer to distinguish between the two signals and produce separable beat signals, achieving accurate short-range detection without requiring complex high-performance hardware
3Device complexity
If long waveform is used for mid- and long-range radar systems, then computation requirements are reduced, but radar reading speed becomes slower
Solution Approach 1:
The patent employs periodic action by transmitting two modulated continuous waves with a predetermined time difference between them. This periodic temporal structure allows the system to process range information through the beat signals without requiring excessively long waveform durations, thereby maintaining faster radar reading speeds while reducing computation requirements through the structured temporal separation
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
This approach maintains high accuracy in range detection while reducing the requirements for wider bandwidths and faster sweep times, allowing for efficient detection of objects at various ranges without the limitations of existing methods.
Implementation Method 1
mixing the received first modulated continuous wave with the second modulated continuous wave to produce a beat signal
Data Source
AI summary
A method includes generating a first modulated continuous wave from a generating location; transmitting the first modulated continuous wave to an object positioned at a distance from the generating location; generating a second modulated continuous wave from the generating location, wherein the second modulated continuous wave is generated at a predetermined time that is different from a predetermined time at which the first modulated continuous wave is generated; receiving, at a mixer, the first modulated continuous wave from the object; receiving, at the mixer, the second modulated continuous wave from the generating location; mixing the received first modulated continuous wave with the second modulated continuous wave to produce a beat signal to determine a range of the object from the generating location; and outputting the determined range of the object from the generating location.