Target Detection in Two-Channel Passive Radars with Inter-Receiver Collaboration
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866911188439269376 |
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| author | Sriranga, Nandan Yang, Haodong Gandikota, Venkata Varshney, Pramod K. |
| author_facet | Sriranga, Nandan Yang, Haodong Gandikota, Venkata Varshney, Pramod K. |
| contents | We address target detection in a single Delay-Doppler cell using spatially distributed two-channel passive radars. An unknown illuminator of opportunity (IO) is assumed to emit a waveform lying in a known low-dimensional subspace (e.g., OFDM). Each receiver transforms its reference and surveillance signals onto the IO subspace after noise-whitening, to obtain cross-correlation (CC) measurements. To save bandwidth, receivers collaboratively exchange and linearly combine the CC output, and only a subset transmits them to a fusion center (FC) over a multiple-access channel (MAC). Collaboration weights are designed using the moments of the FC measurement to enhance detection performance. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_13287 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Target Detection in Two-Channel Passive Radars with Inter-Receiver Collaboration Sriranga, Nandan Yang, Haodong Gandikota, Venkata Varshney, Pramod K. Signal Processing We address target detection in a single Delay-Doppler cell using spatially distributed two-channel passive radars. An unknown illuminator of opportunity (IO) is assumed to emit a waveform lying in a known low-dimensional subspace (e.g., OFDM). Each receiver transforms its reference and surveillance signals onto the IO subspace after noise-whitening, to obtain cross-correlation (CC) measurements. To save bandwidth, receivers collaboratively exchange and linearly combine the CC output, and only a subset transmits them to a fusion center (FC) over a multiple-access channel (MAC). Collaboration weights are designed using the moments of the FC measurement to enhance detection performance. |
| title | Target Detection in Two-Channel Passive Radars with Inter-Receiver Collaboration |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2509.13287 |