CN114485545A - High-precision angle data detection system of microwave guide equipment - Google Patents
High-precision angle data detection system of microwave guide equipment Download PDFInfo
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Abstract
The invention relates to the technical field of data detection systems, in particular to a high-precision microwave guide equipment angle data detection system; the method comprises the following steps: the main machine comprises a C-band receiving module, a signal processing module, a display control assembly, a power supply module and a battery. The invention aims at the problems that the adopted technology of special angle measurement detection equipment for microwave guidance equipment developed at early stage in China is relatively lagged behind, the volume and the weight are large, particularly the angle data measurement precision is low, and the requirement of a special airplane for the angle data detection of high-precision microwave guidance equipment cannot be met, realizes that the azimuth angle measurement precision is not inferior to +/-0.16 degrees and the elevation angle precision is not inferior to +/-0.18 degrees, meets the angle data index measurement requirement, verifies the consistency of data signals tested by a system and basic data information transmitted by the microwave guidance angle measurement equipment, effectively improves the fixed detection and fault maintenance capability of the high-precision microwave guidance equipment, and has important significance for improving the flight safety guarantee capability.
Description
Technical Field
The invention relates to the technical field of data detection systems, in particular to a high-precision microwave guide equipment angle data detection system.
Background
The microwave guiding device is mainly used for guiding the airplane to safely take off and land all day long in an airport or a mobile platform. The device mainly provides azimuth, elevation angle and distance guide information for the airplane, the airborne device calculates the angle (azimuth and elevation angle) guide information transmitted by the ground station through receiving, processing and data, the real-time deviation of the airplane from a regulated gliding channel picture is visually displayed, and a pilot operates the airplane to land according to the correct gliding channel. At present, high-precision microwave guide equipment for guaranteeing the take-off and landing of special airplanes is usually installed on a fixed airport or a marine mobile platform, the technical performance of the equipment can be influenced by various factors such as installation positions, environmental conditions, peripheral electromagnetic interference and the like, the flight safety is seriously influenced and restricted, and the regular detection of angle data information transmitted by the equipment is very necessary. The adopted technology of the special angle measurement detection equipment for the microwave guide equipment developed at early stage in China is relatively lagged behind, the volume and the weight are large, especially the angle data measurement precision is low (the precision is inferior to 0.50), and the requirement of a special airplane on the angle data detection of the high-precision microwave guide equipment cannot be met.
The high-precision microwave guide equipment angle data detection system is mainly based on the hardware architecture design of ARM + DSP + FPGA, comprehensively applies technical methods such as high-precision angle measurement, embedded microprocessor display control, costas digital phase-locked loop carrier tracking and recovery and the like, and designs and realizes the functions of digital signal processing, module control and ARM _ Linux-based display control; the software design is mainly based on C/C + + language programming, VHDL or Verilog hardware description language mode, development and test are carried out under the operating environment with different requirements, and the software design functions of display control, signal processing, data resolving and the like are realized. Through comprehensive debugging experiments and butt joint tests with the actual equipment, test results show that the detection system can meet the detection requirements on angle data information of high-precision microwave guide equipment, and plays an important role in guaranteeing the flight taking-off and landing safety of special airplanes.
To sum up, the research and development of a high-precision microwave guide equipment angle data detection system still remains a key problem to be solved urgently in the technical field of data detection systems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a high-precision microwave guide equipment angle data detection system, which aims at the problem that the adopted technology of special angle detection equipment developed at early stage in China is relatively laggard, the volume and weight are large, especially the angle data measurement precision is low (the precision is inferior to 0.50) and the requirement of special airplanes on the angle data detection of the high-precision microwave guide equipment cannot be met, the system is mainly designed by a host, a radio frequency feeder line and a horn mouth receiving antenna, wherein the host is used by matching a C-band receiving module, a signal processing module, a display and control component, a power supply module and a battery, the system azimuth angle measurement precision is not inferior to +/-0.16 degrees, the elevation angle precision is not inferior to +/-0.18 degrees, the method meets the measurement requirement of the angle data index of the system, verifies the consistency of the data signal of the system test and the basic data information transmitted by the microwave guide angle measuring equipment, effectively improves the regular check and fault maintenance capabilities of the high-precision microwave guide equipment, and has important significance for improving the flight safety guarantee capability.
In order to achieve the purpose, the invention provides the following technical scheme:
a high accuracy microwave guidance device angle data detection system, includes: the system comprises a host, a radio frequency feeder and a horn mouth receiving antenna, wherein the host comprises a C-band receiving module, a signal processing module, a display control assembly, a power supply module and a battery;
the horn mouth receiving antenna is used for receiving the C-band microwave guide signal and outputting two paths of signals through secondary frequency conversion;
the signal processing module is used for outputting a 30MHz microwave guide intermediate frequency signal and completing self-detection of the detection system through the C-band receiving module;
the display control assembly adopts an LCD (liquid crystal display) with a high-transmittance low-reflection film plated on the surface of the protective glass and is used for displaying the test data of the receiver;
the host external interface comprises an antenna RF input interface used for receiving microwave guide space signals by a horn antenna, a synchronous output interface used for outputting angle synchronization and data synchronization signals, and a logarithmic video output interface used for monitoring input signals.
The invention is further configured to: the signal processing module is based on the ARM + DSP + FPGA architecture design, is used for angle data digital signal processing, module control and is based on ARM _ Linux display control functions, provides LVDS, PS2, USB, network interface and RS232 external interfaces, and is designed into 7 working units including ADC, DAC, FPGA, DSP, ARM, power supply and clock.
The invention is further configured to: the signal processing module can also be used for sampling video signals and intermediate frequency signals, outputting intermediate frequency self-checking signals, providing control signals for an external circuit, outputting synchronous signals and LVTTL level standards, and has the functions of communication between a LAN port, an RS-232 interface and an upper computer and the like.
The invention is further configured to: the C-band receiving module comprises a receiving channel, a control unit, a local oscillator 1, a local oscillator 2, a self-checking module and a power supply unit, and is used for outputting two paths of signals, namely a logarithmic video signal and a 30MHz intermediate frequency signal through secondary frequency conversion.
The invention is further configured to: the control unit is used for receiving external 1-path SPI communication and control codes such as wave channel, self-checking, attenuation and the like, finishing control over each unit and feeding back frequency locking indication information of the local oscillator 1 to the outside.
The invention is further configured to: the local oscillator 1 is used for generating a local oscillator signal to be matched with a receiving channel to realize frequency conversion and BITE design and feeding back the local oscillator signal to the outside.
The invention is further configured to: and the local oscillator 2 is used for outputting 580MHz dot frequency and is matched with a receiving channel to realize frequency conversion.
The invention is further configured to: the horn mouth receiving antenna adopts a horn mouth type antenna, the frequency range is 5.0 GHz-5.1 GHz, the gain is more than or equal to 8dB, the impedance is 50 omega, the vertical polarization mode is adopted, and the standing wave is less than or equal to 2.0.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
the invention provides a high-precision microwave guide equipment angle data detection system, which aims at the problems that the adopted technology of special angle detection equipment developed at early stage in China is relatively lagged behind, the volume weight is large, especially the angle data measurement precision is low (the precision is inferior to 0.50) and the angle data detection requirement of special airplanes on the high-precision microwave guide equipment cannot be met, the system design mainly comprises a host, a radio frequency feeder line and a horn mouth receiving antenna, wherein the host is used by matching a C-band receiving module, a signal processing module, a display control assembly, a power supply module and a battery, the system azimuth angle measurement precision is not inferior to +/-0.16 degrees, the elevation angle precision is not inferior to +/-0.18 degrees, the system angle data index measurement requirement is met, and the consistency of data signals tested by the system and basic data information transmitted by the microwave guide angle detection equipment is verified, the method effectively improves the regular inspection and fault maintenance capabilities of the precision microwave guide equipment, and has important significance for improving the flight safety guarantee capability.
Drawings
FIG. 1 is a block diagram of a host computer of an angle data detection system of a high-precision microwave guidance device angle data detection system;
FIG. 2 is a block diagram of a C-band receiving module of an angle data detecting system of a high-precision microwave guide device;
FIG. 3 is a functional flow diagram of an azimuth and elevation angle of an angle data detection system of a high precision microwave guidance device;
FIG. 4 is a flow chart of the data word function of a high precision microwave guide device angle data detection system;
fig. 5 is a signal processing flow chart of a high-precision microwave guidance device angle data detection system.
Illustration of the drawings: 1. a host; 2. a radio frequency feeder; 3. a horn-mouth receiving antenna; 10. a C-band receiving module; 11. a signal processing module; 12. a display control component; 13. a power supply module; 14. a battery; 101. a receiving channel; 102. a control unit; 103. local oscillation 1; 104. local oscillation 2; 105. a self-checking module; 106. a power supply unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
Referring to fig. 1-5, a system for detecting angle data of a high-precision microwave guide device includes: host computer 1, radio frequency feeder 2 and horn mouth receiving antenna 3, host computer 1 includes C wave band receiving module 10, signal processing module 11, display and control subassembly 12, power module 13 and battery 14.
The bell mouth receiving antenna 3 receives the C-band microwave guide signal, outputs two paths of signals through secondary frequency conversion, wherein one path is logarithmic video and is used for amplitude demodulation, and the logarithmic video is matched with a data channel to finish parameter measurement of angle data and the like; the other path is a 70MHz intermediate frequency signal which is used for demodulating the data signal.
The signal processing module 11 outputs a microwave guide intermediate frequency signal of 30MHz, and the detection system self-check is completed through the C-band receiving module 10; the output channel and attenuation control signal effectively selects and controls the receiving channel 101 of the C-band receiving module 10.
The display control component 12 displays the receiver test data by using an LCD liquid crystal display with a high-transmittance low-reflection film (AR) plated on the surface of the protective glass. The power supply mode adopts alternating current 220VAC/50Hz or battery or external direct current power supply.
An antenna RF input interface is designed on an external interface of the system host 1 to complete the receiving of microwave guide space signals by a horn mouth receiving antenna 3; the synchronous output interface completes angle synchronization and data synchronization signal output; the logarithmic video output interface is used for monitoring input signals; the USB port finishes the export of an external mouse and test data; the LAN port finishes the online debugging of the detection system; the power interface is used for the input of 220VAC alternating current power supply and direct current.
The signal processing module 11 realizes angle data digital signal processing, module control and display control functions based on ARM _ Linux, provides external interfaces such as LVDS, PS2, USB, internet access, RS232 and the like, and is designed into 7 working units of ADC, DAC, FPGA, DSP, ARM, power supply and clock. The signal processing module 11 mainly completes the sampling of video signals and intermediate frequency signals, outputs intermediate frequency self-checking signals, provides control signals for external circuits, outputs synchronous signals and LVTTL level standard, and has the functions of communication between a LAN port and an RS-232 interface and an upper computer and the like.
The analog-to-digital converter AD9625 filters the input 70MHz intermediate frequency and video signal, converts the intermediate frequency signal into a digital signal, and transmits the digital signal to the FPGA unit for processing.
The digital-to-analog converter AD9779 converts the digital baseband signal output by the FPGA into an analog intermediate frequency signal, the analog intermediate frequency signal is amplified to 0dBm through an amplifier and output, and the output design is completed by adopting a 1:1 balun. The FPGA selects XC7K325T-2FFG900I, adopts a Master SPI configuration mode, designs M [2:0] ═ 001 according to the width of an x4 bus, generates control logic, sends baseband signals and receives preprocessed intermediate frequency signals and video signals. The synchronous signal is generated by FPGA, and is output after being isolated by a driver, and the level standard is LVTTL3.3V.
The DSP is a main body of a signal processing algorithm, and the fixed floating point DSP TMS320C6657 is selected for analyzing and calculating the data preprocessed by the FPGA. After the DSP is powered on, an input clock and a PLL are stable, a reset pin is released, the DSP acquires the state of a mode pin BOOTMODE [2:0] when the rising edge of the reset pin, an SPI BOOT mode is adopted, when the DSP samples BOOTMODE [2:0] ═ 110, data of an external SPI FLASH are read for loading and starting, and the DSP clock is designed to be 1000 MHz.
The ARM selects iMX6Q MCIMX6Q6AVT10AC of NXP, and is mainly cooperated with a keyboard, a display screen and the like on the case to realize a human-computer interaction interface. The peripherals include DDR3, EMMC, RTC, temperature sensor, SSD, USB, ethernet, RS232, RS422, etc. The design adopts 8bit EMMC Boot, and the SD interface of start is SD 4. The clock is typically 24MHz and 32.768KHz in frequency.
The power supply unit mainly converts an externally input +5V power supply into working voltage of each chip and controls power-on time sequence of the power supply. The power-on sequence of the whole system: after the single board is powered on, the ARM is started first, the FPGA and the DSP are controlled to be started after the ARM is started, and the FPGA and the DSP are started according to respective power-on time sequences.
The C-band receiving module 10 mainly comprises a receiving channel 101, a control unit 102, a local oscillator 1103, a local oscillator 2104, a self-checking module 105, a power supply unit 106, and the like, and mainly functions to output two paths of signals, one path of logarithmic video, and one path of 30MHz intermediate frequency signal, through secondary frequency conversion.
The receiving channel 101 receives an input C-band microwave guide angle data signal, performs filtering, amplitude limiting and amplification, performs frequency mixing, and outputs a first intermediate frequency signal of 510MHz, and performs secondary frequency mixing after the first intermediate frequency signal is filtered and amplified, thereby generating a second intermediate frequency signal of 70 MHz. The control unit 102 receives external 1-way SPI communication and control codes such as channel, self-check, attenuation, etc., completes control of each unit, and feeds back frequency locking indication information of the local oscillator 1103 to the outside. The local oscillator 1103 generates a local oscillator signal, and the local oscillator signal is matched with a receiving channel to realize frequency conversion and BITE design and is fed back to the outside; the local oscillator 2104 module outputs 580MHz dot frequency, and realizes frequency conversion by matching with the receiving channel 101; after the external reference is input into the self-checking module 105, a self-checking signal is generated and input into the receiving channel 101; the power supply unit 106 supplies a dc power of a specified voltage to the other units.
The display control component 12 is composed of an interface signal processing module, a 7-inch liquid crystal display module, a key light guide plate module, a panel component and the like. The whole structure adopts the modularized, embedded function key and backlight driving integrated design, has the wide visual angle display function of 85 degrees in the up-down, left-right and four aspects, supports network interface, RS232 interface, USB, video signal output, wide voltage input and the like, and supports 26 user-defined keys and different kinds of peripheral requirements; providing a man-machine interaction interface, and realizing communication with a mainboard through a serial port; the interface signal processing board receives LVDS signals output by the upper computer, the LVDS signals are decoded into TTL levels through the decoder, the encoder encodes the TTL levels into VGA signals, the video processing chip collects the VGA signals, and the VGA signals are sent to the display screen through the LVDS video signals to be displayed.
The system power supply adopts an alternating current power supply mode and a direct current power supply mode, and the power supply priority is as follows: the power supply of the AC power supply > the external direct current power supply > the power supply of the lithium battery, the single-phase AC220V/50Hz voltage charges a +14.4V lithium ion storage battery pack in the lithium battery unit after AC/DC conversion, and then stable +5V and +12V direct current voltage is output to supply power to the system after DC/DC conversion. The system power supply design has the functions of alternating current input over-voltage and under-voltage, over-temperature, output short circuit protection and the like.
The horn mouth receiving antenna 3 is designed to adopt a horn mouth type antenna, the frequency range is 5.0 GHz-5.1 GHz, the gain is more than or equal to 8dB, the impedance is 50 omega, the vertical polarization mode is adopted, and the standing wave is less than or equal to 2.0.
The software design mainly comprises two parts, namely display control software and signal processing software [17 ]. The display and control software operation platform is processed by ARM, is programmed by C/C + + language, and is developed and debugged based on Qt environment; the DSP software is programmed by adopting a mode of combining C language and assembly language and debugged in a CCS environment; the FPGA signal processing software is developed by adopting VHDL or Verilog language and debugged in an ISE environment.
The display control software mainly realizes the setting of interface parameters, the display of test data, the receiving and processing of keyboard signals and the storage and reading of test data.
The azimuth and elevation function realizes real-time measurement and display of microwave guide scanning signal power and update rate mainly by inputting azimuth and elevation true values, real-time azimuth and elevation error curve can be displayed by clicking the azimuth and elevation error graphic buttons, and the design flow is shown in fig. 3.
The data word function realizes the circular switching of the test contents of the basic data words and the auxiliary data words through the keyboard, and supports the basic data words 1-6, the auxiliary data words A1-A3, B40-B45 and the like. For the defined data word, the corresponding data word content can be analyzed, and the signal power and the update rate are measured; for undefined auxiliary data words, demodulation and display are performed in the spare auxiliary data word, and the software design flow is shown in fig. 4.
The file management function mainly completes the management of the test data file, when the test data needs to be stored, the azimuth data and the elevation data are stored by setting the storage time length, and the stored data can be played back in the test receiving process. And supporting a user to select a storage time: 1 minute, 2 minutes, 5 minutes, and 10 minutes, the data store automatically generates a CSV format file with the current time as the file name. The calibration function mainly performs calibration compensation of the power of the scanning signal and the data signal, and each compensation value can be stored in the device.
The signal processing software function comprises two parts of data demodulation and amplitude and angle demodulation. The 70MHz amplitude limiting intermediate frequency signal output by the radio frequency front end is converted into a digital intermediate frequency signal through A/D sampling with the sampling rate of 40MHz, a 10MHz signal is filtered out through a band-pass filter with the bandwidth of 120kHz, and a 800kHz signal is output through digital down-conversion, so that 4 times of extraction is carried out for reducing the signal processing pressure, the signal data rate is reduced to 10MHz, carrier recovery and tracking are realized by adopting a digital costas phase-locked loop technology in design, and the calculation of a data baseband signal is completed. In order to improve the test precision of the system, a coherent demodulation mode is adopted in the design to realize the demodulation of the DPSK signal. The signal after coherent demodulation is an absolute code, and the conversion of the absolute code to a relative code is realized through software design. If the absolute code is recorded as bkThe relative code is denoted as akThen the relationship between absolute code-relative code is:
and carrying out relevant operation and data information differential demodulation on the demodulated data baseband signal to obtain relevant information of the functional code, the basic data word and the auxiliary data word. Receiving microwave guide information envelope signals output by a front end, demodulating elevation angle, azimuth and scanning power information by matching with data demodulation through A/D sampling and 26kHz low-pass filtering, and realizing amplitude and angle demodulation. The flow chart of the work of capacity identification, information verification, display output and the like is shown in fig. 5.
Example 2
After the angle data detection system is researched and developed, a detection test and data test verification are carried out by using certain airport microwave guide equipment. According to relevant standard regulations and system test requirements, a horn mouth receiving antenna is erected and selected in a coverage area with a distance of 400m and an azimuth antenna phase center of +/-20 degrees, the erection height is adjustable between 4.5m and 30m, a typical angle signal receiving test point is determined in advance to be used as a calibration point, and an optical total station is used for accurately measuring azimuth and elevation angle data of the microwave guiding device azimuth and elevation angle antenna phase center of the test point to be used as calibration values of azimuth, elevation angle and data information.
According to the steps of a method for detecting the interface operation and the detection use program of the system, a horn mouth receiving antenna and a radio frequency testing cable of the system are correctly connected with a system host, three typical channels of 500, 600 and 699 which are the same as the angle measuring functional equipment of the microwave guide equipment are selected, the channel, the true value of the azimuth angle and the true value of the elevation angle are arranged on the angle functional interface, the azimuth angle, the elevation angle and data signal information transmitted by the microwave guide angle measuring equipment are tested in situ, and the tested azimuth angle and elevation angle data are compared with the calibration data.
The test results are shown in table 1, table 2 and table 3. The actual measurement result shows that: the azimuth angle testing precision is not inferior to +/-0.16 degrees, the elevation angle testing precision is not inferior to +/-0.18 degrees, and the testing result meets the technical index requirement of an angle detection system; the tested data signal is consistent with the data information transmitted by the microwave guide angle measuring equipment, and the effectiveness and the accuracy of the function and the performance of the detection system are verified.
TABLE 1 azimuth angle measured data recording table of detection system
TABLE 2 elevation angle measured data recording table of detection system
TABLE 3 actual measurement record table of data words of detection system
The angle data detection system for the high-precision microwave guide equipment adopts the latest digital, modular and miniaturized technical design, realizes the receiving, processing, resolving and measuring of space signals transmitted by the high-precision microwave guide equipment, and accurately judges the main functions and technical performance of the microwave guide equipment. The detection system performs on-site butt joint experiments and data tests in a real-installation environment, and the experimental result shows that: the system azimuth angle measurement accuracy is not inferior to +/-0.16 degrees, the elevation angle accuracy is not inferior to +/-0.18 degrees, the system angle data index measurement requirement is met, the consistency of data signals tested by the system and basic data information transmitted by the microwave guide angle measurement equipment is verified, the regular inspection and fault maintenance capabilities of the high-accuracy microwave guide equipment are effectively improved, and the method has important significance for improving the flight safety guarantee capability.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (8)
1. A high accuracy microwave guide equipment angle data detection system which characterized in that includes: the radio frequency antenna comprises a host (1), a radio frequency feeder (2) and a horn mouth receiving antenna (3), wherein the host (1) comprises a C-band receiving module (10), a signal processing module (11), a display control assembly (12), a power supply module (13) and a battery (14);
the horn mouth receiving antenna (3) is used for receiving C-band microwave guide signals and outputting two paths of signals through secondary frequency conversion;
the signal processing module (11) is used for outputting a microwave guide intermediate frequency signal of 30MHz, and the detection system self-detection is completed through the C-band receiving module (10);
the display control component (12) adopts an LCD (liquid crystal display) with a protective glass surface plated with a high-transmittance low-reflection film and is used for displaying the test data of the receiver;
the host (1) external interface comprises an antenna RF input interface for receiving microwave guide space signals by the horn antenna (3), a synchronous output interface for outputting angle synchronization and data synchronization signals, and a logarithmic video output interface for monitoring input signals.
2. The system for detecting the angle data of the high-precision microwave guidance equipment according to the claim 1, wherein the signal processing module (11) is based on the architecture design of ARM + DSP + FPGA, is used for angle data digital signal processing, module control and is based on ARM _ Linux display control function, provides LVDS, PS2, USB, network interface and RS232 external interfaces, and is designed into 7 working units of ADC, DAC, FPGA, DSP, ARM, power supply and clock.
3. The system for detecting the angle data of the high-precision microwave guidance equipment according to claim 2, wherein the signal processing module (11) is further used for sampling video signals and intermediate frequency signals, outputting intermediate frequency self-test signals, providing control signals for external circuits, outputting synchronous signals and LVTTL level standards, and having functions of communication with an upper computer through a LAN port and an RS-232 interface.
4. The system for detecting the angle data of the high-precision microwave guidance equipment according to claim 1, wherein the C-band receiving module (10) comprises a receiving channel (101), a control unit (102), a local oscillator 1(103), a local oscillator 2(104), a self-checking module (105) and a power supply unit (106), and the C-band receiving module (10) is configured to output two paths of signals through secondary frequency conversion, one path of logarithmic video and the other path of 30MHz intermediate frequency signal.
5. The system according to claim 4, wherein the control unit (102) is configured to receive external 1-way SPI communication and control codes such as channel, self-check, attenuation, and the like, complete control over each unit, and feed back frequency locking indication information of the local oscillator 1(103) to the outside.
6. A high accuracy microwave guide equipment angle data detection system according to claim 4, characterized in that, the local oscillator 1(103) is used to generate a local oscillator signal, cooperate with the receiving channel (101) to implement frequency conversion and BITE design, and feed back to the outside.
7. The system for detecting the angle data of the high-precision microwave guidance equipment according to claim 4, wherein the local oscillator 2(104) is used for outputting 580MHz dot frequency, and the frequency conversion is realized by matching with a receiving channel (101).
8. The system for detecting the angle data of the high-precision microwave guide equipment according to the claim 1, wherein the horn-mouth receiving antenna (3) is a horn-mouth antenna, the frequency range is 5.0 GHz-5.1 GHz, the gain is not less than 8dB, the impedance is 50 Ω, the vertical polarization mode is adopted, and the standing wave is not more than 2.0.
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