Analysis of the influence of key parameters of step-frequency radar on false alarm signal

U₁/dBmV	R₁/m	U₂/dBmV	R₂/m
E₁=6 dBV/m		E₂=17.5 dBV/m
19.12	4506.0	20.70	4586.0
19.10	3330.0	20.80	2756.0
19.13	2769.0	20.73	3580.0
19.12	1384.0	20.68	2860.0
19.13	633.7	20.73	932.9
19.12	3256.0	20.70	3456.0
19.10	3344.0	20.66	3243.0
19.12	1819.0	20.70	2016.0
19.13	783.7	20.71	689.3
19.00	1123.0	20.68	4586.0

Table 2. False alarm signal test data (E₁=20.6 dBV/m)

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Table 2. False alarm signal test data (E₁=20.6 dBV/m)

t_r/ms	n'	U_m/dBmV	R/m	ΔR
0.05	1	24.67	2077.0	—
0.04	4	18.5	419.2	ΔR₁=1519.8 m
		18.5	1939.0	ΔR₂=1517.0 m
		18.3	3456.0	ΔR₃=1490.0 m
		18.4	4946.0	ΔR≈1508.0 m
0.03	3	19.2	1364.0	ΔR₁=1504.0 m
		19.2	2868.0	ΔR₂=1518.0 m
		19.2	4386.0	ΔR≈1511.0 m
0.02	2	19.6	1155.0	ΔR≈1502.0 m
0.02	2	19.5	2657.0	ΔR≈1502.0 m
0.01	1	17.7	965.1	—

Table 3. False alarm signal test data (E₂=32.6 dBV/m)

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Table 3. False alarm signal test data (E₂=32.6 dBV/m)

t_r/ms	n'	U_m/dBmV	R/m	ΔR
0.05	1	24.8	2033.0	—
0.04	4	18.6	242.9	ΔR₁=1499.1 m
		18.6	1742.0	ΔR₂=1503.0 m
		18.7	3245.0	ΔR₃=1494.0 m
		18.6	4739.0	ΔR≈1498.7 m
0.03	3	19.2	713.6	ΔR₁=1496.4 m
		19.3	2210.0	ΔR₂=1514.0 m
		19.2	3724.0	ΔR≈1510.2 m
0.02	2	19.4	1402.0	ΔR≈1501.0 m
0.02	2	19.5	2903.0	ΔR≈1501.0 m
0.01	1	17.7	553.4	—

Table 4. False alarm signal test data (Δf₂=40 MHz)

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Table 4. False alarm signal test data (Δf₂=40 MHz)

t_r/ms	n'	U_m/dBmV	R/m	ΔR
注：表中ΔR₁、ΔR₂、ΔR₃分别代表出现多虚警目标时，第n′个和第n′+1个（n′=1,2,3）之间的间隔，ΔR表示对间隔取平均。
0.05	1	21.23	1983.0	—
0.04	4	14.6	500.9	ΔR₁=1498.1 m
		14.8	1999.0	ΔR₂=1503.0 m
		14.9	3502.0	ΔR₃=1495.0 m
		14.6	4997.0	ΔR≈1498.7 m
0.03	3	14.8	609.6	ΔR₁=1493.7 m
		15.0	2103.0	ΔR₂=1497.0 m
		15.0	3600.0	ΔR≈1495.4 m
0.02	2	15.0	383.9	ΔR≈1504.0 m
0.02	2	15.1	1888.0	ΔR≈1504.0 m
0.01	1	13.2	499.4	—

Table 5. False alarm signal test data (Δf^*=10 kHz，Δf₂=0 MHz)
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Table 5. False alarm signal test data (Δf^*=10 kHz，Δf₂=0 MHz)
t_r/ms n' ΔR/m U₁/dBmV
E₁=17.6 dBV/m E₁=20.6 dBV/m E₁=26.6 dBV/m
0.05 1 — 20.7 20.9 21.1
0.04 2 3000 16.9 17.3 17.1
0.03 3 1500 14.7 14.9 14.8
0.02 1 — 18.2 18.1 18.4
0.01 1 — 13.9 13.7 13.9

Table 6. False alarm signal test data (Δf^*=10 kHz，Δf₂=−60 MHz)
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Table 6. False alarm signal test data (Δf^*=10 kHz，Δf₂=−60 MHz)
t_r/ms n' ΔR/m U₂/dBmV
E₂=17.6 dBV/m E₂=20.6 dBV/m E₂=26.6 dBV/m
0.05 1 — 17.1 17.2 17.4
0.04 2 3000 13.6 13.7 13.8
0.03 3 1500 11.2 10.7 11.1
0.02 1 — 14.0 14.4 14.6
0.01 1 — 9.3 9.8 10.5

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Xue Du, Guanghui Wei, Dalin Wu. Analysis of the influence of key parameters of step-frequency radar on false alarm signal[J]. High Power Laser and Particle Beams, 2024, 36(9): 093003

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