Radar Front End Serial Data Encoding for Timing Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Radar systems face signal degradation and increased power consumption due to the separation between analog front ends and digital back ends, requiring multiple wires for data and synchronization signals, which can lead to inefficiencies and higher costs.
Innovation Solution
The integration of code words and data words in a single data stream allows for simultaneous signaling of radar data and synchronization information, using a single wire pair and encoding techniques like 8b/10b encoding to provide accurate timing information without additional overhead, reducing the need for separate synchronization signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If digitized radar signals are transmitted from analog front end to digital baseband, then signal degradation is reduced, but the number of physical wires required increases
Solution Approach 1:
The patent combines multiple functions (data transmission, synchronization, and side-band information) into a single integrated data stream. The analog front end embeds timing and control information within the radar signal data itself, eliminating the need for separate physical wires for synchronization and status signals.
Solution Approach 2:
The single data wire performs multiple functions simultaneously: it carries the digitized radar signal, embedded synchronization information, and side-band data validity indicators. This multi-functional approach replaces what would traditionally require multiple dedicated wires.
2Measurement precision
If separate synchronization signals are supplied to baseband processor, then timing accuracy is improved, but power consumption increases
Solution Approach 1:
Synchronization information is merged into the radar signal data stream rather than being transmitted as a separate high-power signal. The timing information is embedded within the same communication channel used for radar data, reducing overall power consumption while maintaining accuracy.
3Reliability
If multiple wires are used for data and synchronization signals, then signal integrity is improved, but hardware complexity increases
Solution Approach 1:
Multiple signal types (radar data, synchronization, side-band information) are merged into a single integrated data stream that is transmitted over one wire pair. This reduces hardware complexity while maintaining signal integrity through proper encoding and error handling.
Solution Approach 2:
The single data wire is designed to handle multiple functions simultaneously, including radar signal transmission, timing synchronization, and data validity indication, thereby reducing the overall hardware requirements compared to dedicated wires for each function.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An analog front end for a radar system and method of operation are described. A transmitter circuit transmits a radar signal and a receiver circuit receives and processes a reflected radar signal and outputs a received radar signal. A timing circuit controls operation of the transmitter circuit and the receiver circuit and outputs a valid data signal indicating whether the receiver circuit will be receiving the reflected radar signal. A converter converts the received radar signal and outputs digital data. A serialising circuit receives the digital data and supplies a serial data stream including the digital data for a data processing device. The valid data signal is also communicated to the converter to cause the converter to output a bit pattern corresponding to a code word when the valid data signals indicates that the receiver circuit will not be receiving the reflected radar signal and to output a bit pattern corresponding to a data word including radar data when the valid data signals indicates that the receiver circuit will be receiving the reflected radar signal.