A Millimeter-Wave Radar Tunnel Obstacle Detection Method Based on Invalid Target Filtering
Abstract
:1. Introduction
2. Materials and Methods
2.1. Software, Hardware, and Information Acquisition
2.2. Theoretical Framework
2.2.1. Principle of Millimeter-Wave Radar Target Detection
2.2.2. CAN Message
2.3. Target Model
2.3.1. Object_1_General Message Segment
2.3.2. Object_3_Extended Message Segment
2.4. Filtering Methods for Invalid Millimeter-Wave Radar Targets
3. Test and Result Analysis
3.1. Performance Test of Filtering Algorithm for Invalid Targets
3.1.1. Car at a Standstill
3.1.2. The Vehicle Was Running in a Straight Line under the Smooth Road Surface
3.1.3. The Vehicle Was Driving on an Uneven Road Surface
3.2. Comparison of the Filtering Rate of Invalid Targets in Different States
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Parameters | Long Distance Narrow Vision Angle (±9°) | Long Distance Narrow Vision Angle (±4°) | Short Range Wide View Angle (±60°) | Short Range Wide View Angle (±40°) |
---|---|---|---|---|
Detection distance/m | 0.2–150 | 0.2–250 | 0.2–20 | 0.2–70 |
Horizontal angle resolution/(°) | 3.2 | 1.6 | 12.3 | 4.5 |
Horizontal angle accuracy/(°) | ±0.3 | ±0.1 | ±5 | ±1 |
Detection range resolution/m | 1.79 | 1.79 | 0.39 | 0.39 |
Detection range accuracy/m | ±0.4 | ±0.4 | ±0.1 | ±0.1 |
Speed resolution/(km.h−1) | 0.37 | 0.37 | 0.43 | 0.43 |
Speed accuracy/(km.h−1) | ±0.1 |
Signal | Starting Position | Length | Minimum Value | Maximum Value | Resolution |
---|---|---|---|---|---|
Object_ID | 0 | 8 | 0 | 255 | 1 |
Object_DistLong | 19 | 13 | −500 m | +1138.2 m | 0.2 m |
Object_DistLat | 24 | 11 | −204.6 m | +204.8 m | 0.2 m |
Object_VrelLong | 46 | 10 | −128.00 m/s | 127.75 m/s | 0.25 m/s |
Object_VrelLat | 53 | 9 | −64.00 m/s | 63.75 m/s | 0.25 m/s |
Object_RCS | 56 | 8 | −64.0 dBm2 | 63.5 dBm2 | 0.5 dBm2 |
Signal | Starting Position | Length | Minimum Value | Maximum Value | Resolution |
---|---|---|---|---|---|
Object_ID | 0 | 8 | 0 | 255 | 1 |
Object_ArelLong | 21 | 11 | −10.00 m/s2 | 10.47 m/s2 | 0.01 m/s2 |
Object_ArelLat | 28 | 9 | −2.50 m/s2 | 2.61 m/s2 | 0.01 m/s2 |
Object_Orientation Angel | 46 | 10 | −180.00° | 180.00° | 0.4° |
Object_Length | 48 | 8 | 0.0 m | 51.0 m | 0.2 m |
Object_Width | 56 | 8 | 0.0 m | 51.0 m | 0.2 m |
Stage | Status Parameters | Practical Implications |
---|---|---|
Generate | FindCount + 1 and LostCount = 0 | FindCount starts to accumulate when a front-end target is detected, and LostCount is set to 0. |
Continuous | FindCount > CD and LostCount < CL | The cumulative number of times the target was detected is greater than CD, and the number of consecutive losses is less than CL. |
Extinction | FindCount ≥ CD and DetectCount = 0 | If the number of consecutive losses of the target is greater than CL, FindCount is set to 0, indicating that the target has disappeared and will no longer be detected and will be filtered out. |
ID | Timestamp | Vertical Coordinate (m) | Horizontal Coordinates (m) | Category |
---|---|---|---|---|
2 | 17:14:41:301 | 24.6 | −0.4 | experimenter A |
9 | 17:14:41:456 | 21.2 | 4.8 | Point |
11 | 17:14:41:523 | 66.4 | 0.2 | Trolley |
12 | 17:14:41:612 | 50.2 | 1.0 | Point |
13 | 17:14:41:783 | 37.8 | −1.8 | Point |
14 | 17:14:41:845 | 78.0 | 4.0 | Point |
18 | 17:14:41:966 | 83.0 | 2.6 | Point |
19 | 17:14:42:086 | 29.8 | 0.4 | experimenter B |
20 | 17:14:42:168 | 39.8 | −1.2 | Point |
21 | 17:14:42:236 | 70.8 | 1.2 | Point |
22 | 17:14:42:301 | 141.0 | 44.8 | Point |
First Time | Second | Third | Average Filtration Rate | |
---|---|---|---|---|
Stationary | 87.72% | 87.76% | 87.97% | 87.82% |
Smooth driving 5 km/h/(%) | 87.74% | 87.59% | 87.76% | 87.70% |
Smooth driving 7 km/h/(%) | 86.62% | 86.49% | 87.39% | 86.83% |
Smooth driving 10 km/h/(%) | 86.56% | 86.52% | 86.54% | 86.54% |
Driving with vibration 5 km/h/(%) | 86.64% | 86.59% | 86.46% | 86.56% |
Driving with vibration 7 km/h/(%) | 86.62% | 86.49% | 86.39% | 86.50% |
Driving with vibration 10 km/h/(%) | 86.51% | 86.32% | 86.49% | 86.44% |
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Share and Cite
Pan, Y.; Huo, F.; Wang, Z.; Zhai, S.; Geng, Z. A Millimeter-Wave Radar Tunnel Obstacle Detection Method Based on Invalid Target Filtering. Appl. Sci. 2023, 13, 6720. https://doi.org/10.3390/app13116720
Pan Y, Huo F, Wang Z, Zhai S, Geng Z. A Millimeter-Wave Radar Tunnel Obstacle Detection Method Based on Invalid Target Filtering. Applied Sciences. 2023; 13(11):6720. https://doi.org/10.3390/app13116720
Chicago/Turabian StylePan, Yue, Fulin Huo, Zhichong Wang, Shengyu Zhai, and Zhongcheng Geng. 2023. "A Millimeter-Wave Radar Tunnel Obstacle Detection Method Based on Invalid Target Filtering" Applied Sciences 13, no. 11: 6720. https://doi.org/10.3390/app13116720
APA StylePan, Y., Huo, F., Wang, Z., Zhai, S., & Geng, Z. (2023). A Millimeter-Wave Radar Tunnel Obstacle Detection Method Based on Invalid Target Filtering. Applied Sciences, 13(11), 6720. https://doi.org/10.3390/app13116720