Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

weight value determination method
| Serial | Threat | Importance of Threat | Importance of Standardization | Weight |
|---|---|---|---|---|
| 1 | type | 4 | 24 | 0.72727 |
| 2 | frequency | 3 | 6 | 0.18181 |
| 3 | distance | 2 | 2 | 0.06061 |
| 4 | position | 1 | 1 | 0.03031 |
| total | 33 | 1.000 |
Parameters of ground to air radar detection equation
| Parameter | Explain |
|---|---|
| Pgt | Transmitter power of ground early warning radar |
| Ggt | Antenna gain of ground early warning radar |
| Gr | Aircraft radar antenna gain |
| λ | wavelength |
| σ | Radar cross section of target |
| R | Distance between ground early warning radar and aircraft |
| Pgr | Target echo power received by ground early warning radar |
| Pr | Signal power of ground early warning radar received by aircraft radar |
Comparison of ground to air radar target judgment results
| Condition | Discriminant results |
|---|---|
|
| Not detected |
|
| Detected |
|
| Not detected |
|
| Detected |