Passive radar downrange imaging with multiple transmitters and one receiver
Abstract Passive radar systems use illuminators of opportunity to illuminate targets instead of dedicated radar transmitters. The signals of opportunity have lower bandwidth than dedicated active radar systems, leading to poor downrange resolution. Multiple signals of opportunity can be coherently c...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-08-01
|
| Series: | IET Radar, Sonar & Navigation |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/rsn2.12263 |
| _version_ | 1818529572297113600 |
|---|---|
| author | Aaron Brandewie Robert J. Burkholder |
| author_facet | Aaron Brandewie Robert J. Burkholder |
| author_sort | Aaron Brandewie |
| collection | DOAJ |
| description | Abstract Passive radar systems use illuminators of opportunity to illuminate targets instead of dedicated radar transmitters. The signals of opportunity have lower bandwidth than dedicated active radar systems, leading to poor downrange resolution. Multiple signals of opportunity can be coherently combined to increase the overall bandwidth of the system, and therefore create finer resolution images. These signals are usually separated in the frequency domain (non‐contiguous), which causes large unwanted grating lobe artefacts in the image when using back‐projection or Fourier transform based imaging. Additionally, these signals may originate from transmitters not located at the same position. A calibration method is developed to align the downrange responses and coherently combine the two signals. A compressive sensing‐based algorithm is used to combine the calibrated non‐contiguous frequency data, and is shown to mitigate the grating lobe artefacts that occur when using a back‐projection algorithm. This approach is validated with simulated and experimental data from a passive radar system tracking a commercial airline using two digital television (DTV) broadcast transmitters. |
| first_indexed | 2024-12-11T17:08:35Z |
| format | Article |
| id | doaj.art-e33a1d20ead54ad78ac0926db1e56b1a |
| institution | Directory Open Access Journal |
| issn | 1751-8784 1751-8792 |
| language | English |
| last_indexed | 2024-12-11T17:08:35Z |
| publishDate | 2022-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Radar, Sonar & Navigation |
| spelling | doaj.art-e33a1d20ead54ad78ac0926db1e56b1a2022-12-22T00:57:36ZengWileyIET Radar, Sonar & Navigation1751-87841751-87922022-08-011681316132910.1049/rsn2.12263Passive radar downrange imaging with multiple transmitters and one receiverAaron Brandewie0Robert J. Burkholder1Department of Electrical and Computer Engineering ElectroScience Lab The Ohio State University Columbus Ohio USADepartment of Electrical and Computer Engineering ElectroScience Lab The Ohio State University Columbus Ohio USAAbstract Passive radar systems use illuminators of opportunity to illuminate targets instead of dedicated radar transmitters. The signals of opportunity have lower bandwidth than dedicated active radar systems, leading to poor downrange resolution. Multiple signals of opportunity can be coherently combined to increase the overall bandwidth of the system, and therefore create finer resolution images. These signals are usually separated in the frequency domain (non‐contiguous), which causes large unwanted grating lobe artefacts in the image when using back‐projection or Fourier transform based imaging. Additionally, these signals may originate from transmitters not located at the same position. A calibration method is developed to align the downrange responses and coherently combine the two signals. A compressive sensing‐based algorithm is used to combine the calibrated non‐contiguous frequency data, and is shown to mitigate the grating lobe artefacts that occur when using a back‐projection algorithm. This approach is validated with simulated and experimental data from a passive radar system tracking a commercial airline using two digital television (DTV) broadcast transmitters.https://doi.org/10.1049/rsn2.12263bistatic scatteringcompressive sensingmultistatic radarpassive radarradar imagingrange‐Doppler imaging |
| spellingShingle | Aaron Brandewie Robert J. Burkholder Passive radar downrange imaging with multiple transmitters and one receiver IET Radar, Sonar & Navigation bistatic scattering compressive sensing multistatic radar passive radar radar imaging range‐Doppler imaging |
| title | Passive radar downrange imaging with multiple transmitters and one receiver |
| title_full | Passive radar downrange imaging with multiple transmitters and one receiver |
| title_fullStr | Passive radar downrange imaging with multiple transmitters and one receiver |
| title_full_unstemmed | Passive radar downrange imaging with multiple transmitters and one receiver |
| title_short | Passive radar downrange imaging with multiple transmitters and one receiver |
| title_sort | passive radar downrange imaging with multiple transmitters and one receiver |
| topic | bistatic scattering compressive sensing multistatic radar passive radar radar imaging range‐Doppler imaging |
| url | https://doi.org/10.1049/rsn2.12263 |
| work_keys_str_mv | AT aaronbrandewie passiveradardownrangeimagingwithmultipletransmittersandonereceiver AT robertjburkholder passiveradardownrangeimagingwithmultipletransmittersandonereceiver |