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| Content Provider | IET Digital Library |
|---|---|
| Author | Huang, Jamie Huimin Garry, Joseph Landon Smith, Graeme E. |
| Abstract | This work investigates the use of passive radar array-based localisation, with a focus on experimental demonstration and practical array calibration aspects. Passive radar target localisation often employs multilateration, where a set of hyperbolic equations from range differences or elliptic equations from bistatic ranges are solved to determine the three-dimensional (3D) target position. An alternative uses array-based direction finding to provide an accurate measurement of target bearing, and intersects the bearing vector with a bistatic range ellipsoid to obtain a 3D target position. Continuous-wave digitally modulated signals like digital television (DTV) provides stable power spectra and long integration times, and these support fine range and Doppler resolutions to isolate multiple targets without the association difficulties of multilateration. The Bartlett method can then be used on individual targets, giving bearing estimates of much higher accuracy than the array beamwidth. This was shown experimentally with an electrically small array yielding small angular errors in both azimuth and elevation. Using a DTV-based passive radar, a target at 20 km receiver range was located with an accuracy of ∼250 m in a 3D position. Furthermore, a procedure for in-situ array calibration using opportunistic air targets is reported. |
| Starting Page | 1295 |
| Ending Page | 1305 |
| Page Count | 11 |
| ISSN | 17518784 |
| Volume Number | 13 |
| e-ISSN | 17518792 |
| Issue Number | Issue 8, Aug (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rsn/13/8 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2018.5511 |
| Journal | IET Radar, Sonar & Navigation |
| Publisher Date | 2019-04-09 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | 20 Km Receiver Range Alternative Uses Array-based Direction Finding Array Beamwidth Array Signal Processing Array-based Target Localisation ATSC DTV Passive Radar Bearing Estimate Bearing Vector Bistatic Range Ellipsoid Bistatic Ranges Calibration Continuous-wave Digitally Modulated Signal Digital Television Direction of Arrival Estimation Doppler Radar DTV-based Passive Radar Electrically Small Array Elliptic Equation Experimental Demonstration Function Theory And Analysis Hyperbolic Equation In-situ Array Calibration Individual Targets Multiple Targets Opportunistic Air Targets Passive Radar Passive Radar Array-based Localisation Passive Radar Target Localisation Practical Array Calibration Aspects Radar Equipment Radar Signal Processing Range Differences Signal Processing And Detection Size 20.0 Km Size 250.0 M Statistics Support Fine Range System And Application Target Bearing Target Tracking Three-dimensional Target Position |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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