Health Monitoring Framework for Weather Radar Based on Long Short-Term Memory Network with a Real Case Study

Table 2

The top monitoring parameters associated with the calibrated fault alarm records of weather radar based on the historical dataset from 31 radar stations.

Index	Monitoring parameters	Aggregated regression coefficient	Importance measure	Description
1	ANT_AVG_PWR	71.19	35.12%	Average power of horizontally oriented antennas
2	XMTR_AVG_PWR	35.28	17.41%	Average power of transmitter
3	ANT_PEAK_PWR	26.49	13.07%	Peak power of horizontally oriented antennas
4	XMTR_PEAK_PWR	14.88	7.34%	Peak power of transmitter
5	EXPECTED_REFL_AMP8	7.29	3.60%	Reflectivity expectation 8
6	MEASURED_RF8_AMP3	4.19	2.07%	KD calibration measurement 3
7	MEASURED_REFL_AMP7	4.02	1.98%	Reflectivity measurement 7
8	MEASURED_REFL_AMP2	3.9	1.92%	Reflectivity measurement 2
9	MEASURED_REFL_AMP8	3.56	1.76%	Reflectivity measurement 8
10	UNFILTERED_LIN_CHAN_PWR	3.2	1.58%	Power of the horizontal channel before filtering
11	ANT_PWR_MTR_ZERO	2.81	1.39%	Power zero-calibration of horizontally oriented antennas
12	MEASURED_RF8_AMP2	2.4	1.18%	KD calibration measurement 2
13	MEASURED_REFL_AMP3	2.2	1.09%	Reflectivity measurement 3
14	EXPECTED_REFL_AMP6	1.7	0.84%	Reflectivity expectation 6
15	EXPECTED_RF8_AMP3	1.52	0.75%	KD calibration expectation 3
16	MEASURED_RF8_AMP6	1.48	0.73%	KD calibration measurement 6
17	MEASURED_REFL_AMP1	1.45	0.72%	Reflectivity measurement 1
18	MEASURED_RF8_AMP4	1.43	0.71%	KD calibration measurement 4
19	FILTERED_LIN_CHAN_PWR	1.31	0.65%	Power of the horizontal channel filtered
20	MEASURED_REFL_AMP4	1.31	0.65%	Reflectivity measurement 4
21	MEASURED_RF8_AMP5	1.25	0.62%	KD calibration measurement 5
22	EXPECTED_RF8_AMP1	1.18	0.58%	KD calibration expectation 1
23	MEASURED_RF8_AMP1	1.16	0.57%	KD calibration measurement 1
24	EXPECTED_RF8_AMP4	1.1	0.54%	KD calibration expectation 4
25	IDU_TEST_DETECTIONS	1.1	0.54%	Number of interference detections
26	EXPECTED_REFL_AMP1	1.08	0.53%	Reflectivity expectation 1
27	MEASURED_REFL_AMP6	0.95	0.47%	Reflectivity measurement 6
28	XMTR_PWR_MTR_ZERO	0.85	0.42%	Power zero-calibration of transmitter
29	EXPECTED_REFL_AMP4	0.59	0.29%	Reflectivity expectation 4
30	EXPECTED_REFL_AMP5	0.49	0.24%	Reflectivity expectation 5
31	EXPECTED_RF8_AMP6	0.33	0.16%	KD calibration expectation 6
32	EXPECTED_RF8_AMP5	0.3	0.15%	KD calibration expectation 5
33	EXPECTED_REFL_AMP7	0.2	0.10%	Reflectivity expectation 7
34	POWER_METER_RATIO_DB	0.18	0.09%	The power ratio of transmitter to antenna
35	EXPECTED_REFL_AMP3	0.1	0.05%	Reflectivity expectation 3
36	RNLPLG	0.1	0.05%	Long pulse noise level
37	EXPECTED_REFL_AMP2	0.08	0.04%	Reflectivity expectation 2
38	MEASURED_REFL_AMP5	0.05	0.02%	Reflectivity measurement 6