Dim Range-Spread Target Detection for Stepped-Frequency Radar Using a Bernoulli Extended Target Filter
Stepped-frequency radar is an important high range resolution radar. It can achieve wide overall bandwidth with narrow instant bandwidth. When the signal-to-noise ratio is low, detection and tracking become challenging due to dense false alarms and the range-Doppler coupling problem. In this paper,...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-02-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/25/5/1426 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850050688693829632 |
|---|---|
| author | Fei Cai Meiyu Tang |
| author_facet | Fei Cai Meiyu Tang |
| author_sort | Fei Cai |
| collection | DOAJ |
| description | Stepped-frequency radar is an important high range resolution radar. It can achieve wide overall bandwidth with narrow instant bandwidth. When the signal-to-noise ratio is low, detection and tracking become challenging due to dense false alarms and the range-Doppler coupling problem. In this paper, a new methodology is presented to address this problem. A Bernoulli extended target filter is used for joint detection and tracking of a dim range-spread target. The results of coherent processing are thresholded firstly using a low threshold, and the range-Doppler coupled detections generated by multiple scatterers, together with the false alarms, are fed to the Bernoulli filter. By appropriately modeling the range-Doppler coupling, the range spread, and the false alarms in the state and measurement models, the filter can detect the target effectively. Simulation results show that good detection performance is obtained and the range-Doppler coupling is decoupled simultaneously. |
| format | Article |
| id | doaj-art-2c249ef523194cbb8918d0e69d7b6495 |
| institution | DOAJ |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-2c249ef523194cbb8918d0e69d7b64952025-08-20T02:53:22ZengMDPI AGSensors1424-82202025-02-01255142610.3390/s25051426Dim Range-Spread Target Detection for Stepped-Frequency Radar Using a Bernoulli Extended Target FilterFei Cai0Meiyu Tang1College of Information Science and Engineering, Hunan Normal University, Changsha 410081, ChinaCollege of Information Science and Engineering, Hunan Normal University, Changsha 410081, ChinaStepped-frequency radar is an important high range resolution radar. It can achieve wide overall bandwidth with narrow instant bandwidth. When the signal-to-noise ratio is low, detection and tracking become challenging due to dense false alarms and the range-Doppler coupling problem. In this paper, a new methodology is presented to address this problem. A Bernoulli extended target filter is used for joint detection and tracking of a dim range-spread target. The results of coherent processing are thresholded firstly using a low threshold, and the range-Doppler coupled detections generated by multiple scatterers, together with the false alarms, are fed to the Bernoulli filter. By appropriately modeling the range-Doppler coupling, the range spread, and the false alarms in the state and measurement models, the filter can detect the target effectively. Simulation results show that good detection performance is obtained and the range-Doppler coupling is decoupled simultaneously.https://www.mdpi.com/1424-8220/25/5/1426extended targettarget detectionstepped-frequency radar |
| spellingShingle | Fei Cai Meiyu Tang Dim Range-Spread Target Detection for Stepped-Frequency Radar Using a Bernoulli Extended Target Filter Sensors extended target target detection stepped-frequency radar |
| title | Dim Range-Spread Target Detection for Stepped-Frequency Radar Using a Bernoulli Extended Target Filter |
| title_full | Dim Range-Spread Target Detection for Stepped-Frequency Radar Using a Bernoulli Extended Target Filter |
| title_fullStr | Dim Range-Spread Target Detection for Stepped-Frequency Radar Using a Bernoulli Extended Target Filter |
| title_full_unstemmed | Dim Range-Spread Target Detection for Stepped-Frequency Radar Using a Bernoulli Extended Target Filter |
| title_short | Dim Range-Spread Target Detection for Stepped-Frequency Radar Using a Bernoulli Extended Target Filter |
| title_sort | dim range spread target detection for stepped frequency radar using a bernoulli extended target filter |
| topic | extended target target detection stepped-frequency radar |
| url | https://www.mdpi.com/1424-8220/25/5/1426 |
| work_keys_str_mv | AT feicai dimrangespreadtargetdetectionforsteppedfrequencyradarusingabernoulliextendedtargetfilter AT meiyutang dimrangespreadtargetdetectionforsteppedfrequencyradarusingabernoulliextendedtargetfilter |