CN116068273B - High-power shortwave phased array phase detection method - Google Patents

High-power shortwave phased array phase detection method Download PDF

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Publication number
CN116068273B
CN116068273B CN202310204118.5A CN202310204118A CN116068273B CN 116068273 B CN116068273 B CN 116068273B CN 202310204118 A CN202310204118 A CN 202310204118A CN 116068273 B CN116068273 B CN 116068273B
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phase
signal
radio frequency
discrimination circuit
power
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CN116068273A (en
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谢旭
魏世泽
张林森
徐争光
王宇航
左浩
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Naval University of Engineering PLA
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention provides a high-power shortwave phased array phase detection method, which utilizes an inspection system, wherein the system comprises a first high-power coupler, a second high-power coupler, a first power distributor, a second power distributor, a first phase discrimination circuit, a second phase discrimination circuit and a processor provided with a two-channel phase detection algorithm, and the method comprises the following steps: the first high-power coupler is connected with the first phase discrimination circuit and the second phase discrimination circuit through the first power distributor respectively, the second high-power coupler is connected with the first phase discrimination circuit and the second phase discrimination circuit through the second power distributor respectively, the first phase discrimination circuit and the second phase discrimination circuit are both connected with the processor, and the processor is internally provided with a double-channel phase detection algorithm. The invention is suitable for high-power short wave signals, improves the phase detection precision, overcomes the phase ambiguity caused by the binaryzation of the phase discrimination circuit, avoids the nonlinear region of the phase discrimination circuit, has low complexity, wide applicable frequency range and low requirement on hardware.

Description

High-power shortwave phased array phase detection method
Technical Field
The invention belongs to the technical field of high-power short-wave phased array communication systems, and particularly relates to a high-power short-wave phased array phase detection method.
Background
At present, a high-power short wave phased array is mainly used for long-distance short wave communication. In order to ensure the high gain beam pointing precision of the phased array antenna, the phase detection needs to be performed on each path of radio frequency signals after phase shifting. However, there are several difficulties with high power shortwave phased array systems: 1) High power cannot be detected directly; 2) The frequency range is wide, and the detection complexity is high; 3) The phase discrimination circuit has binaryzation in the phase detection, so that the phase is blurred; 4) The nonlinear region exists in the phase detection, so that the phase measurement precision is reduced, and the phase detection result is affected.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides a high-power short wave phased array phase detection method which can realize the phase detection of a high-power short wave phased array. The method is not limited to the phase detection of two paths of radio frequency signals, and can be extended to multiple paths.
In order to solve the technical problems, the invention adopts the following technical scheme: a high power shortwave phased array phase detection system, comprising: the device comprises a first high-power coupler, a second high-power coupler, a first power distributor, a second power distributor, a first phase discrimination circuit, a second phase discrimination circuit and a processor provided with a two-channel phase detection algorithm, wherein the first high-power coupler is respectively connected with the first phase discrimination circuit and the second phase discrimination circuit through the first power distributor, the second high-power coupler is respectively connected with the first phase discrimination circuit and the second phase discrimination circuit through the second power distributor, the first phase discrimination circuit and the second phase discrimination circuit are both connected with the processor, and the processor is provided with the two-channel phase detection algorithm.
Preferably, the method is as follows:
the radio frequency input signal A outputs a radio frequency coupling signal through a first high-power coupler
Figure SMS_3
And radio frequency output signal->
Figure SMS_4
Output RF coupling signal->
Figure SMS_7
Marked as->
Figure SMS_1
A circuit, as a reference signal, a radio frequency output signal +.>
Figure SMS_5
Input to a first antenna; the radio frequency input signal B outputs a radio frequency coupling signal through a second high-power coupler>
Figure SMS_9
And radio frequency output signal->
Figure SMS_10
RF coupling signal->
Figure SMS_2
Marked as->
Figure SMS_6
The circuit is used as a signal to be tested, and a radio frequency output signal is->
Figure SMS_8
Input to the second antenna;
Figure SMS_11
the signals are output by 2 paths of first power divider signals and are respectively marked as +.>
Figure SMS_16
Road sum->
Figure SMS_17
A road; />
Figure SMS_12
The signal is output by 2 paths of second power divider signals and is marked as +.>
Figure SMS_14
Road sum->
Figure SMS_19
A road; />
Figure SMS_20
Way signal is taken as AND->
Figure SMS_13
Reference signal for signal comparison, < >>
Figure SMS_15
Way signal is taken as AND->
Figure SMS_18
Reference for comparison of road signalsA test signal;
Figure SMS_21
way signal output and->
Figure SMS_22
The length of the output signals is +.>
Figure SMS_23
The phase shift cable of (2) is input into a first phase discrimination circuit to calculate the phase difference, and the calculated result is output in the form of voltage and is marked as +.>
Figure SMS_24
；/>
Figure SMS_25
The length of the path signal after output is +.>
Figure SMS_26
+Δl phase shift cable, ++Δl>
Figure SMS_27
The length of the path signal after output is
Figure SMS_28
Then simultaneously input into a second phase discrimination circuit to calculate the phase difference, and the calculated result is output in the form of voltage and is recorded as +.>
Figure SMS_29
；
Will be
Figure SMS_30
、/>
Figure SMS_31
Inputting into a processor of a two-channel phase detection algorithm, and obtaining +.>
Figure SMS_32
Way and->
Figure SMS_33
Relatively accurate phase difference between the signals>
Figure SMS_34
。
Preferably, the phase detection algorithm is:
will be
Figure SMS_35
、/>
Figure SMS_36
Performing two-dimensional table look-up, wherein->
Figure SMS_37
For the horizontal axis->
Figure SMS_38
For the vertical axis, the numerical values in the table are marked in the rectangular coordinate system +.>
Figure SMS_39
-/>
Figure SMS_40
Obtaining a scatter diagram of the table, wherein the scatter diagram represents calibration points, and the scatter diagram is linearly related in a certain range; the calibration table used for the two-dimensional table lookup is a table calibrated in advance and is used as a reference basis for determining the phase value of the signal to be detected;
during measurement, the measured radio frequency input signal outputs voltage
Figure SMS_41
、/>
Figure SMS_42
Labeling the scatter diagram to obtain a coordinate point c, calculating the minimum Euclidean distance to obtain a calibration point nearest to the coordinate point c, and then interpolating to obtain a phase value corresponding to the coordinate point c.
Preferably, the frequency of the measured radio frequency input signalRate use
Figure SMS_43
A representation;
the radio frequency input signal corresponding to the calibration point nearest to the coordinate point c is used as a reference object of the measured radio frequency input signal, and the measured radio frequency input signal is used for the frequency
Figure SMS_44
A representation; the frequency of the RF input signal corresponding to the calibration point nearest to the coordinate point c is used as the reference RF signal frequency of the measured RF input signal, and +.>
Figure SMS_45
A representation; the phase of the RF input signal corresponding to the calibration point nearest to the coordinate point c is used as the reference phase of the measured RF input signal
Figure SMS_46
A representation; the voltage value of the RF input signal corresponding to the calibration point nearest to the coordinate point c is used as the reference voltage value of the measured RF input signal, & gt>
Figure SMS_47
The reference voltage value is +.>
Figure SMS_48
Measured radio frequency input signal +.>
Figure SMS_49
The reference voltage value is +.>
Figure SMS_50
；
The interpolation is carried out in two cases;
currently measured radio frequency signal frequency
Figure SMS_52
When the voltage value is calculated, the minimum Euclidean distance of the voltage value is calculated, the phase value corresponding to the minimum Euclidean distance is selected, and the +.>
Figure SMS_55
、/>
Figure SMS_59
Whether or not it falls within the linear region, if->
Figure SMS_53
In the linear region, then according to ∈>
Figure SMS_54
Performing interpolation calculation on the phase; if->
Figure SMS_58
In the linear region, then according to ∈>
Figure SMS_60
Performing interpolation calculation on the phase; if->
Figure SMS_51
、/>
Figure SMS_56
None of which are in the linear region, then according to +.>
Figure SMS_57
、/>
Figure SMS_61
The phase is calculated by the distribution and slope interpolation of the (a);
currently measured radio frequency signal frequency
Figure SMS_62
When the method is used, firstly, frequency interpolation is carried out, a voltage value at an f frequency point is calculated, then, interpolation calculation phase is carried out under 4 conditions, two nearest phase values are selected, and the average value of the two phase values is used as a final phase.
Preferably, the currently measured radio frequency signal frequency
Figure SMS_64
When the voltage value is calculated, the minimum Euclidean distance of the voltage value is calculated, and the minimum Euclidean distance is selectedPhase value corresponding to distance and judging +.>
Figure SMS_68
、/>
Figure SMS_70
Whether or not it falls within the linear region, if->
Figure SMS_65
In the linear region, then according to ∈>
Figure SMS_67
Performing interpolation calculation on the phase; if->
Figure SMS_71
In the linear region, then according to ∈>
Figure SMS_73
Performing interpolation calculation on the phase; if->
Figure SMS_63
、/>
Figure SMS_66
None of which are in the linear region, then according to +.>
Figure SMS_69
、/>
Figure SMS_72
The phase is calculated by the distribution and slope interpolation of the (a); the method specifically comprises the following steps: />
For all of
Figure SMS_74
The Euclidean distance of the voltage value is calculated as follows:
Figure SMS_75
；
the phase value corresponding to the minimum Euclidean distance is selected as follows:
Figure SMS_76
；
in the following discussion of the sub-cases,
1-1, if
Figure SMS_77
And->
Figure SMS_78
Then->
Figure SMS_79
Two other situations are known:
1-1-1, if
Figure SMS_80
Then:
Figure SMS_81
；
1-1-2, if
Figure SMS_82
，
Then:
Figure SMS_83
；
1-2, if
Figure SMS_84
And->
Figure SMS_85
Then->
Figure SMS_86
Two other situations are:
1-2-1, if
Figure SMS_87
，
Then:
Figure SMS_88
；
1-2-2, if
Figure SMS_89
Then:
Figure SMS_90
；
1-3, first calculate the slope
Figure SMS_91
；/>
Figure SMS_92
；
Figure SMS_93
；
Figure SMS_94
；
1-3-1, if simultaneously:
Figure SMS_95
，
Figure SMS_96
，/>
Figure SMS_97
then->
Figure SMS_98
；
Figure SMS_99
；
1-3-2, if simultaneously:
Figure SMS_100
，
Figure SMS_101
，/>
Figure SMS_102
then
Figure SMS_103
；
Figure SMS_104
；
1-3-3, if simultaneously:
Figure SMS_105
，
Figure SMS_106
，/>
Figure SMS_107
then
Figure SMS_108
；
Figure SMS_109
；
1-3-4, if simultaneously:
Figure SMS_110
，
Figure SMS_111
，/>
Figure SMS_112
then
Figure SMS_113
；
Figure SMS_114
；
1-3-5, if simultaneously:
Figure SMS_115
，
Figure SMS_116
then->
Figure SMS_117
；
Figure SMS_118
；/>
1-3-6, if simultaneously:
Figure SMS_119
，
Figure SMS_120
then->
Figure SMS_121
；
Figure SMS_122
；
1-3-7, if simultaneously:
Figure SMS_123
，
Figure SMS_124
then->
Figure SMS_125
；
Figure SMS_126
；
1-3-8, if simultaneously:
Figure SMS_127
；
Figure SMS_128
then->
Figure SMS_129
；
Figure SMS_130
；
1-3-9, if simultaneously:
Figure SMS_131
then->
Figure SMS_132
；
Figure SMS_133
；/>
1-3-10, if simultaneously:
Figure SMS_134
then->
Figure SMS_135
；
Figure SMS_136
；
1-3-11, if simultaneously:
Figure SMS_137
then->
Figure SMS_138
；
Figure SMS_139
；
1-3-12, if simultaneously:
Figure SMS_140
then->
Figure SMS_141
；
Figure SMS_142
；
Performing interpolation calculation
Figure SMS_143
。
Preferably, the currently measured radio frequency signal frequency
Figure SMS_144
When the frequency is calculated, the frequency interpolation is firstly carried outfThe voltage value at the frequency point is then interpolated to calculate the phase under 4 conditions, two nearest phase values are selected, and the average value of the two phase values is used as the final phase, and the method specifically comprises the following steps:
2-1, first, frequency interpolation is performed to calculatefVoltage value at frequency point
Figure SMS_145
And->
Figure SMS_146
；
Searching
Figure SMS_147
Intermediate distancefThe two nearest frequency points are marked asf 1 Andf 2 here, wheref 1 < f 2 ；
Calculating a ratio value
Figure SMS_148
；
The calculated voltage values are as follows:
Figure SMS_149
；/>
Figure SMS_150
；
2-2, calculating phase estimation values under 4 conditions;
2-2-1、
Figure SMS_151
；
Figure SMS_152
；
Figure SMS_153
；
2-2-2、
Figure SMS_154
，
Figure SMS_155
；
Figure SMS_156
；
2-2-3、
Figure SMS_157
，
Figure SMS_158
；
Figure SMS_159
；
2-2-4、
Figure SMS_160
，
Figure SMS_161
；/>
Figure SMS_162
；
2-3, searching for the two closest phase values as follows:
Figure SMS_163
；
calculating a final phase estimate
Figure SMS_164
。
Compared with the prior art, the invention has the following advantages:
the phase detection method of the invention is suitable for high-power short wave signals, improves the phase detection precision,
the phase ambiguity caused by the binaryzation of the phase discrimination circuit is overcome, the nonlinear region of the phase discrimination circuit is avoided, the complexity is low, the applicable frequency range is wide, and the requirement on hardware is low.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
Fig. 1 is a schematic structural diagram of a high-power shortwave phased array phase detection system disclosed in embodiment 1 of the present invention.
Fig. 2 is a scatter diagram used in a method of phase control of a high power shortwave phased array according to embodiment 2 of the present invention.
Fig. 3 is a schematic diagram of a working flow of a dual-channel phase detection algorithm disclosed by the invention.
Detailed Description
Example 1
As shown in fig. 1, this embodiment discloses a high-power shortwave phased array phase detection system, including: the device comprises a first high-power coupler, a second high-power coupler, a first power distributor, a second power distributor, a first phase discrimination circuit, a second phase discrimination circuit and a processor provided with a two-channel phase detection algorithm, wherein the first high-power coupler is respectively connected with the first phase discrimination circuit and the second phase discrimination circuit through the first power distributor, the second high-power coupler is respectively connected with the first phase discrimination circuit and the second phase discrimination circuit through the second power distributor, the first phase discrimination circuit and the second phase discrimination circuit are both connected with the processor, and the processor is provided with the two-channel phase detection algorithm.
Example 2
The embodiment discloses a method for detecting phase of a high-power short-wave phased array, which utilizes the high-power short-wave phased array phase detection system disclosed in the embodiment 1, wherein the power of radio frequency input signals A and B is controlled to be 5-30kw, and the wavelength frequency is controlled to be 3MHz-30MHz, and the method comprises the following steps:
the radio frequency input signal A outputs a radio frequency coupling signal through a first high-power coupler
Figure SMS_166
And radio frequency output signal->
Figure SMS_169
Output RF coupling signal->
Figure SMS_173
Marked as->
Figure SMS_167
A circuit as a reference signal, a radio frequency outputSignal->
Figure SMS_170
Input to a first antenna; the radio frequency input signal B outputs a radio frequency coupling signal through a second high-power coupler>
Figure SMS_172
And radio frequency output signal->
Figure SMS_174
RF coupling signal->
Figure SMS_165
Marked as->
Figure SMS_168
The circuit is used as a signal to be tested, and a radio frequency output signal is->
Figure SMS_171
Input to the second antenna; the power of the radio frequency input signals A and B is controlled to be 5-30kw, and the frequency is controlled to be 3MHz-30MHz;
Figure SMS_176
the signals are output by 2 paths of first power divider signals and are respectively marked as +.>
Figure SMS_179
Road sum->
Figure SMS_182
A road; />
Figure SMS_177
The signal is output by 2 paths of second power divider signals and is marked as +.>
Figure SMS_180
Road sum->
Figure SMS_183
A road; />
Figure SMS_184
Way signal is taken as AND->
Figure SMS_175
Reference signal for signal comparison, < >>
Figure SMS_178
Way signal is taken as AND->
Figure SMS_181
A reference signal for signal comparison;
Figure SMS_185
way signal output and->
Figure SMS_186
The length of the output signals is +.>
Figure SMS_187
The phase shift cable of (2) is input into a first phase discrimination circuit, the phase difference is calculated, the calculated result is output in the form of voltage, and is set as a channel 1 and is marked as +.>
Figure SMS_188
；
Figure SMS_189
The length of the path signal after output is +.>
Figure SMS_190
+Δl phase shift cable, ++Δl>
Figure SMS_191
The length of the path signal after output is
Figure SMS_192
Then simultaneously input into a second phase discrimination circuit to calculate the phase difference, the calculated result is output in the form of voltage and is set as a channel 2 and marked as +.>
Figure SMS_193
；
Will be
Figure SMS_194
、/>
Figure SMS_195
Inputting into a processor of a two-channel phase detection algorithm, and obtaining +.>
Figure SMS_196
Way and->
Figure SMS_197
Relatively accurate phase difference between the signals>
Figure SMS_198
。
In this embodiment, the two-channel phase detection algorithm is:
will be
Figure SMS_199
、/>
Figure SMS_200
Performing two-dimensional table look-up, wherein->
Figure SMS_201
For the horizontal axis->
Figure SMS_202
For the vertical axis, the numerical values in the table are marked in the rectangular coordinate system +.>
Figure SMS_203
-/>
Figure SMS_204
Obtaining a scatter diagram of the table, wherein the scatter diagram represents calibration points, and the scatter diagram is linearly related in a certain range;
the calibration table used for two-dimensional table lookup is a table calibrated in advance, radio frequency input signals A and B with given frequency and phase difference are adopted, and the phase is controlled by the high-power shortwave phased arrayBit detection method for obtaining corresponding bit
Figure SMS_206
Way signal and->
Figure SMS_209
A path signal,
Figure SMS_213
Way signal and->
Figure SMS_207
The phase difference of the path signals and outputs the corresponding voltage +.>
Figure SMS_210
、/>
Figure SMS_212
Establishing a calibration table as shown in table 1, wherein the frequencies in table 1 represent the frequencies of the radio frequency input signals A and B, the phase difference represents the actual phase difference of the radio frequency input signals A and B, and the frequency and the phase difference are selected for given and determined values without specific regulation and can be selected according to actual conditions and requirements by marking +_in table 1>
Figure SMS_214
、/>
Figure SMS_205
Data in rectangular coordinate system->
Figure SMS_208
-/>
Figure SMS_211
A scatter plot as shown in fig. 2. During calibration, the selection of frequency and phase difference is not specified, and the frequency and phase difference can be selected according to actual conditions and requirements. It is generally considered that the more data is selected, the stronger the linear correlation is presented by the obtained scatter diagram, so that the detected phase difference result is more accurate.
Table 1 calibration table
Sequence number Frequency (MHz) Phase difference Channel 1%V 1 ） Channel 2%V 2 ）
1 3.000 0.000 1.845 1.813
2 3.000 10.000 1.777 1.822
3 3.000 20.000 1.654 1.707
4 3.000 30.000 1.539 1.592
5 3.000 40.000 1.421 1.481
6 3.000 50.000 1.327 1.370
7 3.000 60.000 1.239 1.278
8 3.000 70.000 1.156 1.203
9 3.000 80.000 1.090 1.130
10 3.000 90.000 1.036 1.079
11 3.000 100.000 0.948 1.018
12 3.000 110.000 0.861 0.935
13 3.000 120.000 0.730 0.839
14 3.000 130.000 0.593 0.707
15 3.000 140.000 0.521 0.605
16 3.000 150.000 0.391 0.514
17 3.000 160.000 0.245 0.371
18 3.000 170.000 0.093 0.204
19 3.000 180.000 0.025 0.073
20 3.000 190.000 0.146 0.064
21 3.000 200.000 0.296 0.196
22 3.000 210.000 0.455 0.333
23 3.000 220.000 0.553 0.479
24 3.000 230.000 0.666 0.581
25 3.000 240.000 0.808 0.724
26 3.000 250.000 0.899 0.835
27 3.000 260.000 0.971 0.938
28 3.000 270.000 1.058 0.999
29 3.000 280.000 1.120 1.054
30 3.000 290.000 1.187 1.121
31 3.000 300.000 1.266 1.187
32 3.000 310.000 1.354 1.261
33 3.000 320.000 1.461 1.361
34 3.000 330.000 1.576 1.473
35 3.000 340.000 1.693 1.584
36 3.000 350.000 1.817 1.697
37 3.500 0.000 1.846 1.792
38 3.500 10.000 1.773 1.837
39 3.500 20.000 1.656 1.729
40 3.500 30.000 1.535 1.613
41 3.500 40.000 1.421 1.499
42 3.500 50.000 1.317 1.392
43 3.500 60.000 1.225 1.286
44 3.500 70.000 1.142 1.206
45 3.500 80.000 1.070 1.129
46 3.500 90.000 0.987 1.051
47 3.500 100.000 0.914 0.978
48 3.500 110.000 0.827 0.907
49 3.500 120.000 0.722 0.827
50 3.500 130.000 0.577 0.714
51 3.500 140.000 0.518 0.595
52 3.500 150.000 0.383 0.509
53 3.500 160.000 0.223 0.336
54 3.500 170.000 0.087 0.227
55 3.500 180.000 0.026 0.088
56 3.500 190.000 0.134 0.046
57 3.500 200.000 0.277 0.157
58 3.500 210.000 0.433 0.281
59 3.500 220.000 0.537 0.434
60 3.500 230.000 0.660 0.536
61 3.500 240.000 0.762 0.657
62 3.500 250.000 0.866 0.786
63 3.500 260.000 0.942 0.871
64 3.500 270.000 1.019 0.941
65 3.500 280.000 1.101 1.020
66 3.500 290.000 1.178 1.098
67 3.500 300.000 1.261 1.173
68 3.500 310.000 1.354 1.249
69 3.500 320.000 1.464 1.342
70 3.500 330.000 1.576 1.449
71 3.500 340.000 1.700 1.564
72 3.500 350.000 1.822 1.680
73 4.000 0.000 1.846 1.774
74 4.000 10.000 1.783 1.847
75 4.000 20.000 1.666 1.748
76 4.000 30.000 1.549 1.637
77 4.000 40.000 1.428 1.520
78 4.000 50.000 1.323 1.412
79 4.000 60.000 1.228 1.304
80 4.000 70.000 1.146 1.218
81 4.000 80.000 1.059 1.137
82 4.000 90.000 0.979 1.058
83 4.000 100.000 0.887 0.976
84 4.000 110.000 0.799 0.889
85 4.000 120.000 0.710 0.805
86 4.000 130.000 0.588 0.703
87 4.000 140.000 0.440 0.595
88 4.000 150.000 0.369 0.501
89 4.000 160.000 0.207 0.349
90 4.000 170.000 0.076 0.214
91 4.000 180.000 0.024 0.097
92 4.000 190.000 0.112 0.036
93 4.000 200.000 0.244 0.131
94 4.000 210.000 0.373 0.246
95 4.000 220.000 0.483 0.354
96 4.000 230.000 0.620 0.507
97 4.000 240.000 0.739 0.623
98 4.000 250.000 0.829 0.728
99 4.000 260.000 0.914 0.827
100 4.000 270.000 1.000 0.915
101 4.000 280.000 1.087 1.003
102 4.000 290.000 1.172 1.079
103 4.000 300.000 1.257 1.157
104 4.000 310.000 1.354 1.238
105 4.000 320.000 1.457 1.332
106 4.000 330.000 1.575 1.440
107 4.000 340.000 1.697 1.550
108 4.000 350.000 1.810 1.657
109 4.500 0.000 1.845 1.765
110 4.500 10.000 1.793 1.847
111 4.500 20.000 1.678 1.764
112 4.500 30.000 1.558 1.656
113 4.500 40.000 1.441 1.540
114 4.500 50.000 1.337 1.426
115 4.500 60.000 1.239 1.325
116 4.500 70.000 1.143 1.225
117 4.500 80.000 1.064 1.144
118 4.500 90.000 0.970 1.057
119 4.500 100.000 0.880 0.971
120 4.500 110.000 0.790 0.889
121 4.500 120.000 0.687 0.790
122 4.500 130.000 0.586 0.703
123 4.500 140.000 0.439 0.593
124 4.500 150.000 0.366 0.477
125 4.500 160.000 0.208 0.355
126 4.500 170.000 0.099 0.236
127 4.500 180.000 0.023 0.113
128 4.500 190.000 0.098 0.033
129 4.500 200.000 0.221 0.106
130 4.500 210.000 0.350 0.221
131 4.500 220.000 0.486 0.348
132 4.500 230.000 0.595 0.450
133 4.500 240.000 0.701 0.592
134 4.500 250.000 0.798 0.694
135 4.500 260.000 0.893 0.793
136 4.500 270.000 0.982 0.883
137 4.500 280.000 1.071 0.969
138 4.500 290.000 1.162 1.058
139 4.500 300.000 1.251 1.143
140 4.500 310.000 1.349 1.229
141 4.500 320.000 1.454 1.321
142 4.500 330.000 1.569 1.425
143 4.500 340.000 1.689 1.538
144 4.500 350.000 1.802 1.649
145 5.000 0.000 1.845 1.745
146 5.000 10.000 1.799 1.843
147 5.000 20.000 1.684 1.783
148 5.000 30.000 1.564 1.674
149 5.000 40.000 1.454 1.567
150 5.000 50.000 1.345 1.454
151 5.000 60.000 1.243 1.342
152 5.000 70.000 1.150 1.243
153 5.000 80.000 1.057 1.152
154 5.000 90.000 0.965 1.062
155 5.000 100.000 0.877 0.982
156 5.000 110.000 0.779 0.891
157 5.000 120.000 0.678 0.797
158 5.000 130.000 0.565 0.700
159 5.000 140.000 0.446 0.600
160 5.000 150.000 0.345 0.498
161 5.000 160.000 0.200 0.385
162 5.000 170.000 0.096 0.249
163 5.000 180.000 0.024 0.130
164 5.000 190.000 0.089 0.038
165 5.000 200.000 0.203 0.090
166 5.000 210.000 0.327 0.198
167 5.000 220.000 0.466 0.316
168 5.000 230.000 0.583 0.433
169 5.000 240.000 0.684 0.546
170 5.000 250.000 0.787 0.661
171 5.000 260.000 0.881 0.760
172 5.000 270.000 0.973 0.854
173 5.000 280.000 1.071 0.953
174 5.000 290.000 1.158 1.039
175 5.000 300.000 1.254 1.127
176 5.000 310.000 1.349 1.216
177 5.000 320.000 1.455 1.309
178 5.000 330.000 1.568 1.408
179 5.000 340.000 1.687 1.522
180 5.000 350.000 1.797 1.631
During measurement, the measured radio frequency input signal outputs voltage
Figure SMS_215
、/>
Figure SMS_216
Labeling the scatter diagram to obtain a coordinate point c, calculating the minimum Euclidean distance to obtain a calibration point nearest to the coordinate point c, and then interpolating to obtain a phase value corresponding to the coordinate point c.
For measuring the frequency of a radio frequency input signal
Figure SMS_217
A representation;
the radio frequency input signal corresponding to the calibration point nearest to the coordinate point c is used as a reference object of the measured radio frequency input signal, and the measured radio frequency input signal is used for the frequency
Figure SMS_218
A representation; the frequency of the RF input signal corresponding to the calibration point nearest to the coordinate point c is used as the reference RF signal frequency of the measured RF input signal, and +.>
Figure SMS_219
A representation; distance stationThe phase of the RF input signal corresponding to the nearest calibration point of the coordinate point c is used as the reference phase of the measured RF input signal
Figure SMS_220
A representation; the voltage value of the RF input signal corresponding to the calibration point nearest to the coordinate point c is used as the reference voltage value of the measured RF input signal, & gt>
Figure SMS_221
The reference voltage value is +.>
Figure SMS_222
Measured radio frequency input signal +.>
Figure SMS_223
The reference voltage value is +.>
Figure SMS_224
；
The interpolation is performed in two cases, as shown in fig. 3;
first case: currently measured radio frequency signal frequency
Figure SMS_227
When the voltage value is calculated, the minimum Euclidean distance of the voltage value is calculated, the phase value corresponding to the minimum Euclidean distance is selected, and the +.>
Figure SMS_229
、/>
Figure SMS_233
Whether or not it falls within the linear region, if->
Figure SMS_226
In the linear region, then according to ∈>
Figure SMS_230
Performing interpolation calculation on the phase; if->
Figure SMS_232
In the linear region, then according to ∈>
Figure SMS_235
Performing interpolation calculation on the phase; if->
Figure SMS_225
、/>
Figure SMS_228
None of which are in the linear region, then according to +.>
Figure SMS_231
、/>
Figure SMS_234
The phase is calculated by the distribution and slope interpolation of the (a); the method specifically comprises the following steps:
for all of
Figure SMS_236
The Euclidean distance of the voltage value is calculated as follows: />
Figure SMS_237
；
The phase value corresponding to the minimum Euclidean distance is selected as follows:
Figure SMS_238
；
in the following discussion of the sub-cases,
1-1, if
Figure SMS_239
And->
Figure SMS_240
Then->
Figure SMS_241
Two other situations are known:
1-1-1, if
Figure SMS_242
Then:
Figure SMS_243
；
1-1-2, if
Figure SMS_244
，
Then:
Figure SMS_245
；
1-2, if
Figure SMS_246
And->
Figure SMS_247
Then->
Figure SMS_248
Two other situations are:
1-2-1, if
Figure SMS_249
；
Then:
Figure SMS_250
；
1-2-2, if
Figure SMS_251
Then:
Figure SMS_252
；
1-3, first calculate the slope
Figure SMS_253
；/>
Figure SMS_254
；
Figure SMS_255
；
Figure SMS_256
；
1-3-1, if simultaneously:
Figure SMS_257
，
Figure SMS_258
，/>
Figure SMS_259
then->
Figure SMS_260
；
Figure SMS_261
；
1-3-2, if simultaneously:
Figure SMS_262
，
Figure SMS_263
，/>
Figure SMS_264
then
Figure SMS_265
；
Figure SMS_266
；/>
1-3-3, if simultaneously:
Figure SMS_267
，
Figure SMS_268
，/>
Figure SMS_269
then
Figure SMS_270
；
Figure SMS_271
；
1-3-4, if simultaneously:
Figure SMS_272
，
Figure SMS_273
，/>
Figure SMS_274
then
Figure SMS_275
；
Figure SMS_276
；
1-3-5, if simultaneously:
Figure SMS_277
，
Figure SMS_278
then->
Figure SMS_279
；/>
Figure SMS_280
；
1-3-6, if simultaneously:
Figure SMS_281
，
Figure SMS_282
then->
Figure SMS_283
；
Figure SMS_284
；
1-3-7, if simultaneously:
Figure SMS_285
，
Figure SMS_286
then->
Figure SMS_287
；
Figure SMS_288
；
1-3-8, if simultaneously:
Figure SMS_289
；
Figure SMS_290
then->
Figure SMS_291
；
Figure SMS_292
；
1-3-9, if simultaneously:
Figure SMS_293
then->
Figure SMS_294
；
Figure SMS_295
；
1-3-10, if simultaneously:
Figure SMS_296
then->
Figure SMS_297
；
Figure SMS_298
；
1-3-11, if simultaneously:
Figure SMS_299
then->
Figure SMS_300
；
Figure SMS_301
；
1-3-12, if simultaneously:
Figure SMS_302
then->
Figure SMS_303
；
Figure SMS_304
；
Performing interpolation calculation
Figure SMS_305
。
Second case: the currently measured RF signal frequency
Figure SMS_306
When the frequency is calculated, the frequency interpolation is firstly carried outfThe voltage value at the frequency point is then interpolated to calculate the phase under 4 conditions, two nearest phase values are selected, and the average value of the two phase values is used as the final phase, and the method specifically comprises the following steps:
2-1, first, frequency interpolation is performed to calculatefVoltage value at frequency point
Figure SMS_307
And->
Figure SMS_308
；
Searching
Figure SMS_309
Intermediate distancefThe two nearest frequency points are marked asf 1 Andf 2 here, wheref 1 < f 2 ；
Calculating a ratio value
Figure SMS_310
；
The calculated voltage values are as follows:
Figure SMS_311
；
Figure SMS_312
；
2-2, calculating phase estimation values under 4 conditions;
2-2-1、
Figure SMS_313
；
Figure SMS_314
；
Figure SMS_315
；
2-2-2、
Figure SMS_316
；
Figure SMS_317
；
Figure SMS_318
；
2-2-3、
Figure SMS_319
；
Figure SMS_320
；
Figure SMS_321
；
2-2-4、
Figure SMS_322
；/>
Figure SMS_323
；
Figure SMS_324
；
2-3, searching for the two closest phase values as follows:
Figure SMS_325
；
calculating a final phase estimate
Figure SMS_326
。
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention. Any simple modification, variation and equivalent variation of the above embodiments according to the technical substance of the invention still fall within the scope of the technical solution of the invention.

Claims (2)

1. The high-power shortwave phased array phase detection method is characterized in that the high-power shortwave phased array phase detection system comprises the following steps: the system comprises a first high-power coupler, a second high-power coupler, a first power distributor, a second power distributor, a first phase discrimination circuit, a second phase discrimination circuit and a processor provided with a two-channel phase detection algorithm, wherein the first high-power coupler is respectively connected with the first phase discrimination circuit and the second phase discrimination circuit through the first power distributor, the second high-power coupler is respectively connected with the first phase discrimination circuit and the second phase discrimination circuit through the second power distributor, the first phase discrimination circuit and the second phase discrimination circuit are both connected with the processor, and the processor is provided with the two-channel phase detection algorithm;
the high-power shortwave phased array phase detection method comprises the following steps:
the radio frequency input signal A outputs a radio frequency coupling signal through a first high-power coupler
Figure QLYQS_3
And radio frequency output signal->
Figure QLYQS_4
Output RF coupling signal->
Figure QLYQS_9
Marked as->
Figure QLYQS_2
A circuit, as a reference signal, a radio frequency output signal +.>
Figure QLYQS_6
Input to a first antenna; the radio frequency input signal B outputs a radio frequency coupling signal through a second high-power coupler>
Figure QLYQS_7
And radio frequency output signal->
Figure QLYQS_10
RF coupling signal->
Figure QLYQS_1
Marked as->
Figure QLYQS_5
The circuit is used as a signal to be tested, and a radio frequency output signal is->
Figure QLYQS_8
Input to the second antenna;
Figure QLYQS_12
the signals are output by 2 paths of first power divider signals and are respectively marked as +.>
Figure QLYQS_14
Road sum->
Figure QLYQS_17
A road; />
Figure QLYQS_13
The signal is output by 2 paths of second power divider signals and is marked as +.>
Figure QLYQS_16
Road sum->
Figure QLYQS_18
A road; />
Figure QLYQS_20
Way signal is taken as AND->
Figure QLYQS_11
Reference signal for signal comparison, < >>
Figure QLYQS_15
Way signal is taken as AND->
Figure QLYQS_19
A reference signal for signal comparison;
Figure QLYQS_21
way signal output and->
Figure QLYQS_22
The length of the output signals is +.>
Figure QLYQS_23
The phase shift cable of (2) is input into a first phase discrimination circuit to calculate the phase difference, and the calculated result is output in the form of voltage and is marked as +.>
Figure QLYQS_24
；
Figure QLYQS_25
The length of the path signal after output is +.>
Figure QLYQS_26
+Δl phase shift cable, ++Δl>
Figure QLYQS_27
The length of the path signal after output is +.>
Figure QLYQS_28
Then simultaneously input into a second phase discrimination circuit to calculate the phase difference, and the calculated result is output in the form of voltage and is recorded as +.>
Figure QLYQS_29
；
Will be
Figure QLYQS_30
、/>
Figure QLYQS_31
Inputting into a processor of a two-channel phase detection algorithm, and obtaining +.>
Figure QLYQS_32
Way and->
Figure QLYQS_33
Relatively accurate phase difference between the signals>
Figure QLYQS_34
；
The phase detection algorithm is as follows:
will be
Figure QLYQS_35
、/>
Figure QLYQS_36
Performing two-dimensional table look-up, wherein->
Figure QLYQS_37
For the horizontal axis->
Figure QLYQS_38
The numerical values in the table are marked in a rectangular coordinate system for the vertical axis
Figure QLYQS_39
-/>
Figure QLYQS_40
Obtaining a scatter diagram of the table, wherein the scatter diagram represents calibration points, and the scatter diagram is linearly related in a certain range; the calibration table used for the two-dimensional table lookup is a table calibrated in advance and is used as a reference basis for determining the phase value of the signal to be detected;
during measurement, the measured radio frequency input signal outputs voltage
Figure QLYQS_41
、/>
Figure QLYQS_42
Labeling in the scatter diagram to obtain a coordinate point c, calculating the minimum Euclidean distance to obtain a calibration point nearest to the coordinate point c, and then interpolating to obtain a phase value corresponding to the coordinate point c;
for measuring the frequency of a radio frequency input signal
Figure QLYQS_43
A representation;
the radio frequency input signal corresponding to the calibration point nearest to the coordinate point c is used as a reference object of the measured radio frequency input signal, and the measured radio frequency input signal is used for the frequency
Figure QLYQS_44
A representation; the frequency of the RF input signal corresponding to the calibration point nearest to the coordinate point c is used as the reference RF signal frequency of the measured RF input signalUse->
Figure QLYQS_45
A representation; the phase of the RF input signal corresponding to the calibration point closest to the coordinate point c is used as the reference phase of the measured RF input signal>
Figure QLYQS_46
A representation; the voltage value of the RF input signal corresponding to the calibration point nearest to the coordinate point c is used as the reference voltage value of the measured RF input signal, & gt>
Figure QLYQS_47
The reference voltage value is +.>
Figure QLYQS_48
Measured radio frequency input signal +.>
Figure QLYQS_49
The reference voltage value is +.>
Figure QLYQS_50
；
The interpolation is carried out in two cases;
currently measured radio frequency signal frequency
Figure QLYQS_52
When the voltage value is calculated, the minimum Euclidean distance of the voltage value is calculated, the phase value corresponding to the minimum Euclidean distance is selected, and the +.>
Figure QLYQS_54
、/>
Figure QLYQS_58
Whether or not it falls within the linear region, if->
Figure QLYQS_53
In the linear region, then according to ∈>
Figure QLYQS_56
Performing interpolation calculation on the phase; if->
Figure QLYQS_59
In the linear region, then according to ∈>
Figure QLYQS_61
Performing interpolation calculation on the phase; if->
Figure QLYQS_51
、/>
Figure QLYQS_55
None of which are in the linear region, then according to +.>
Figure QLYQS_57
、/>
Figure QLYQS_60
The phase is calculated by the distribution and slope interpolation of the (a);
currently measured radio frequency signal frequency
Figure QLYQS_62
When the method is used, firstly, frequency interpolation is carried out, a voltage value at an f frequency point is calculated, then, interpolation calculation phase is carried out under 4 conditions, two nearest phase values are selected, and the average value of the two phase values is used as a final phase, and the method specifically comprises the following steps:
2-1, first, frequency interpolation is performed to calculatefVoltage value at frequency point
Figure QLYQS_63
And->
Figure QLYQS_64
；
Searching
Figure QLYQS_65
Intermediate distancefThe two nearest frequency points are marked asf 1 Andf 2 here, wheref 1 < f 2 ；
Calculating a ratio value
Figure QLYQS_66
；
The calculated voltage values are as follows:
Figure QLYQS_67
；
Figure QLYQS_68
；
2-2, calculating phase estimation values under 4 conditions;
2-2-1、
Figure QLYQS_69
；
Figure QLYQS_70
；
Figure QLYQS_71
；
2-2-2、
Figure QLYQS_72
；/>
Figure QLYQS_73
；
Figure QLYQS_74
；
2-2-3、
Figure QLYQS_75
；
Figure QLYQS_76
；
Figure QLYQS_77
；
2-2-4、
Figure QLYQS_78
；
Figure QLYQS_79
；
Figure QLYQS_80
；
2-3, searching for the two closest phase values as follows:
Figure QLYQS_81
；
calculating a final phase estimate
Figure QLYQS_82
。
2. The method of claim 1, wherein the currently measured frequency of the rf signal
Figure QLYQS_85
When the voltage value is calculated, the minimum Euclidean distance of the voltage value is calculated, the phase value corresponding to the minimum Euclidean distance is selected, and the +.>
Figure QLYQS_87
、/>
Figure QLYQS_89
Whether or not it falls within the linear region, if->
Figure QLYQS_84
In the linear region, then according to ∈>
Figure QLYQS_88
Performing interpolation calculation on the phase; if->
Figure QLYQS_91
In the linear region, then according to ∈>
Figure QLYQS_93
Performing interpolation calculation on the phase; if->
Figure QLYQS_83
、/>
Figure QLYQS_86
None of which are in the linear region, then according to +.>
Figure QLYQS_90
、/>
Figure QLYQS_92
The phase is calculated by the distribution and slope interpolation of the (a);
the method specifically comprises the following steps:
for all of
Figure QLYQS_94
The Euclidean distance of the voltage value is calculated as follows:
Figure QLYQS_95
；
the phase value corresponding to the minimum Euclidean distance is selected as follows:
Figure QLYQS_96
；
in the following discussion of the sub-cases,
1-1, if
Figure QLYQS_97
And->
Figure QLYQS_98
Then->
Figure QLYQS_99
Two other situations are known:
1-1-1, if
Figure QLYQS_100
Then:
Figure QLYQS_101
；
1-1-2, if
Figure QLYQS_102
，
Then:
Figure QLYQS_103
；
1-2, if
Figure QLYQS_104
And->
Figure QLYQS_105
Then->
Figure QLYQS_106
Two other situations are:
1-2-1, if
Figure QLYQS_107
，
Then:
Figure QLYQS_108
；
1-2-2, if
Figure QLYQS_109
Then:
Figure QLYQS_110
；
1-3, first calculate the slope
Figure QLYQS_111
；
Figure QLYQS_112
；
Figure QLYQS_113
；
Figure QLYQS_114
；
1-3-1, if simultaneously:
Figure QLYQS_115
，
Figure QLYQS_116
，/>
Figure QLYQS_117
then->
Figure QLYQS_118
；
Figure QLYQS_119
；
1-3-2, if simultaneously:
Figure QLYQS_120
，
Figure QLYQS_121
，/>
Figure QLYQS_122
then
Figure QLYQS_123
；/>
Figure QLYQS_124
；
1-3-3, if simultaneously:
Figure QLYQS_125
，
Figure QLYQS_126
，/>
Figure QLYQS_127
then
Figure QLYQS_128
；
Figure QLYQS_129
；
1-3-4, if simultaneously:
Figure QLYQS_130
，
Figure QLYQS_131
，/>
Figure QLYQS_132
then
Figure QLYQS_133
；
Figure QLYQS_134
；
1-3-5, if simultaneously:
Figure QLYQS_135
，
Figure QLYQS_136
then->
Figure QLYQS_137
；/>
Figure QLYQS_138
；
1-3-6, if simultaneously:
Figure QLYQS_139
，
Figure QLYQS_140
then->
Figure QLYQS_141
；
Figure QLYQS_142
；
1-3-7, if simultaneously:
Figure QLYQS_143
，
Figure QLYQS_144
then->
Figure QLYQS_145
；
Figure QLYQS_146
；
1-3-8, if simultaneously:
Figure QLYQS_147
；
Figure QLYQS_148
then->
Figure QLYQS_149
；
Figure QLYQS_150
；
1-3-9, if simultaneously:
Figure QLYQS_151
then->
Figure QLYQS_152
；/>
Figure QLYQS_153
；
1-3-10, if simultaneously:
Figure QLYQS_154
then->
Figure QLYQS_155
；
Figure QLYQS_156
；
1-3-11, if simultaneously:
Figure QLYQS_157
then->
Figure QLYQS_158
；
Figure QLYQS_159
；
1-3-12, if simultaneously:
Figure QLYQS_160
then->
Figure QLYQS_161
；
Figure QLYQS_162
；
Performing interpolation calculation
Figure QLYQS_163
。/>
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