Table 2 Performance comparison of estimation methods.
From: Vortex-electromagnetic-wave-based ISAR imaging for high-speed maneuvering targets
Method | True ratio | Estimated ratio | Error (%) | Execution time (s) | Velocity (m/s) | Velocity error (%) |
|---|---|---|---|---|---|---|
Autocorrelation \({\mathrm {K}} 1\) | \(-\,3.1187\times 10^{9}\) | \(-\,2.9119\times 10^{9}\) | 6.63 | 1.5320 | 2183.9 | 6.63 |
Reference17 \({\mathrm {K}} 2\) | \(-\,3.1187\times 10^{9}\) | \(-\,3.1646\times 10^{9}\) | 1.47 | 6.8923 | 2451.8 | 4.82 |
Proposed method \({\mathrm {K}} 3\) | \(-\,3.1187\times 10^{9}\) | \(-\,3.1448\times 10^{9}\) | 0.84 | 7.0514 | 2373.3 | 1.47 |
