CN103760552A - Float type high-frequency ground wave radar - Google Patents
Float type high-frequency ground wave radar Download PDFInfo
- Publication number
- CN103760552A CN103760552A CN201410037297.9A CN201410037297A CN103760552A CN 103760552 A CN103760552 A CN 103760552A CN 201410037297 A CN201410037297 A CN 201410037297A CN 103760552 A CN103760552 A CN 103760552A
- Authority
- CN
- China
- Prior art keywords
- ground wave
- wave radar
- buoy
- frequency
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004891 communication Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 238000003384 imaging method Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims abstract description 4
- 230000033001 locomotion Effects 0.000 claims description 19
- 238000012937 correction Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000007667 floating Methods 0.000 claims description 4
- 238000013507 mapping Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract 1
- 239000013535 sea water Substances 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 230000006855 networking Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000025518 detection of mechanical stimulus involved in sensory perception of wind Effects 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
A float type high-frequency ground wave radar comprises a float platform, wherein the float platform is provided with a ground wave radar body and further provided with a low-power-consumption computer and a posture sensing module; the low-power-consumption computer is connected with the ground wave radar body and the posture sensing module; the low-power-consumption computer is connected with an operation control module which is connected with an intelligent power source control module; the operation control module is connected with a wind speed and wind direction sensor and a gas sensor; the low-power-consumption computer is connected with a wireless communication module, a photo-electric imaging module and a GPS positioning module. The float type high-frequency ground wave radar overcomes the defect that a traditional ground wave radar needs to be installed on the coast, achieves the key technologies that the high-frequency ground wave radar is integrated on the float platform to carry out monitoring extraction of ocean dynamics parameters, intelligent working, remote data transmission and the like, and has the capacity of monitoring the ocean dynamics parameters of the sea area of fifty to one hundred kilometers around the installation point in a real-time mode when the float type high-frequency ground wave radar is installed in the deep sea water.
Description
Technical Field
The invention relates to a high-frequency ground wave radar, in particular to a buoy type high-frequency ground wave radar.
Background
The traditional high-frequency ground wave radar can only be arranged along a coastline, and the detection range is limited. And because the device works in the offshore area, the working frequency section is crowded and is easily interfered. And the traditional high-frequency ground wave radar can only work in a ground wave mode and can only receive the echo generated by the self transmitting signal, and the acquired data volume is limited.
Disclosure of Invention
The invention provides a buoy type high-frequency ground wave radar, which has the defect that the traditional ground wave radar for sudden wave can only be installed at the coast, and solves the technical problems of monitoring and extracting ocean dynamics parameters, self-powered intelligent work of a complete set of systems, remote data transmission and the like by integrating the high-frequency ground wave radar on a buoy platform. The high-frequency ground wave radar can be used in deep and distant sea areas and has the capability of monitoring marine dynamic parameters of sea areas 50-100 km around a mounting point in real time.
The technical scheme adopted by the invention is as follows: the buoy type high-frequency ground wave radar comprises a buoy platform, wherein the buoy platform is provided with a ground wave radar, the buoy platform is provided with a low-power-consumption computer and an attitude sensing module, the low-power-consumption computer is connected with the ground wave radar and the attitude sensing module, the low-power-consumption computer is connected with an operation control module, and the operation control module is connected with an intelligent power supply control module;
the operation control module is connected with the anemorumbometer and the gas sensor.
The low-power-consumption computer is connected with the wireless communication module, the photoelectric imaging module and the GPS positioning module.
The ground wave radar includes: the receiving antenna is connected with the receiver, the broadband transmitting antenna is connected with the transmitter, and the receiver is connected with the low-power-consumption computer.
The low-power-consumption computer is connected with the AIS communication module.
The low-power consumption computer is connected with the wireless alarm module.
The power supply control module is connected with the storage battery assembly and the solar photovoltaic assembly.
The ground wave radar comprises a square antenna array, the broadband transmitting antenna is located in the center of the square array, and the distance between any two antennas is equal.
The transmitter is a multi-frequency dual-channel all-solid-state digital control transmitter and comprises two working modes of sky wave and earth wave.
A buoy type high-frequency ground wave radar is applied to monitoring of ocean dynamics parameters of a sea area with 50-100 km of the periphery of an installation point of the high-frequency ground wave radar.
A buoy type high-frequency ground wave radar adopts a solar battery and a rechargeable lithium ion battery to jointly supply power.
A buoy type high-frequency ground wave radar is characterized in that a buoy platform is provided with a battery cabin and an instrument cabin.
The invention relates to a buoy type high-frequency ground wave radar, which has the following technical effects:
the buoy type high-frequency ground wave radar disclosed by the invention can break through the limitation that the traditional ground wave radar can only be arranged along a coastline, and the detection range is expanded to a far sea area by receiving sky wave/ground wave mixed path echoes. Greatly enhancing the flexibility of radar system deployment. Meanwhile, the system has expansibility and potential of further receiving radar sky wave nodes, and provides possibility for application of diversity.
The buoy type high-frequency ground wave radar provided by the invention breaks through the defect that the traditional ground wave radar needs to be installed at the coast, solves the key technologies of monitoring and extracting marine dynamic parameters, intelligent work, remote data transmission and the like by integrating the high-frequency ground wave radar on a buoy platform, and can be installed in deep and far sea areas and have the capability of monitoring the marine dynamic parameters of the sea areas 50-100 km around the installation point in real time.
The invention relates to a buoy type high-frequency ground wave radar, which strictly analyzes the intervention degree of a wave high spectrum parameter model in the inversion process under different signal-to-noise ratios and detection conditions through simulation and test by comprehensively researching a backscattering and non-backscattering model of ocean to radio waves and a multi-source related information comprehensive method, finds a corresponding self-adaptive criterion, further breaks through the bottleneck of accurate detection of wind, wave and flow parameters from theory and algorithm by applying an MUSIC algorithm, innovatively researches and develops a signal compensation technology to effectively remove the influence of the antenna shaking of the buoy type ground wave radar on signal receiving, and extracts ocean dynamics parameters by modeling and analyzing ocean echo signals formed by backscattering and non-backscattering.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is an enlarged view taken at A of FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
FIG. 4 is an enlarged view at C of FIG. 1;
FIG. 5 is an enlarged view at D of FIG. 1;
FIG. 6 is a schematic view of the inside structure of the instrument pod of the present invention;
FIG. 7 is a block diagram of module connections according to the present invention.
Fig. 8 is a graph of translational motion of the floating platform according to the present invention.
FIG. 9 is a graph of the rotational movement of the float platform according to the present invention;
fig. 10 is a flow chart of motion compensation of the floating over-the-horizon radar.
FIG. 11 is a table diagram illustrating the calibration of amplitude error of direct waves using asynchronous stations.
FIG. 12 is a table illustrating amplitude-phase calibration using direct arrival between synchronous stations.
Detailed Description
Buoy type high frequency ground wave radar, including the buoy platform, the buoy platform is equipped with main body 1, and main body 1 installs anchoring recovery unit 3. Install the ground wave radar on the buoy platform, install low-power consumption computer 8 and gesture sensing module 2 on the buoy platform, low-power consumption computer 8 connects ground wave radar and gesture sensing module 2, and low-power consumption computer 8 connects operation control module 10, and operation control module 10 connects intelligent power control module 9. The operation control module 10 is connected with an anemorumbometer 14 and a gas sensor 13. The low-power computer 8 is connected with the wireless communication module 11, the photoelectric imaging module 12 and the GPS positioning module 17.
The attitude sensing module 2 is used for measuring the attitude of the buoy platform, and comprises: and the pitch angle, the azimuth angle and the rotation angle are resolved to obtain the attitude angle of the buoy platform in the geodetic coordinate system, and correction compensation parameters are provided for the buoy type ground wave radar measurement system.
The ground wave radar includes: the system comprises a receiving antenna 4 and a broadband transmitting antenna 5, wherein the receiving antenna 4 is connected with a receiver 6, the broadband transmitting antenna 5 is connected with a transmitter 7, and the receiver 6 is connected with a low-power-consumption computer 8. By adopting a broadband antenna technology, the receiving antenna 4 and the transmitting antenna meet the requirement of normal operation within the working frequency range of 12-22 MHz. The transmitter 7 is a multi-frequency dual-channel all-solid-state digital control transmitter and comprises two working modes of sky wave and earth wave. The ground wave radar comprises a square antenna array, the broadband transmitting antenna 5 is located in the center of the square array, and the distance between any two antennas is equal.
The low power consumption computer 8 is connected with an AIS communication module 15. The low-power-consumption computer 8 is connected with a wireless alarm module 16, and the wireless alarm module 16 is a wireless alarm module based on a Beidou system.
The wireless communication module 11 includes: CDMA antenna, CDMA terminal module. The low power computer 8 includes a data processing display center. The data processing and displaying center provides real-time processing and displaying of sensor data and data of the wireless alarm module 16, provides a friendly interface, and is convenient for completing setting of the buoy type high-frequency ground wave radar.
The synchronous networking system 18 is composed of a GPS antenna and a synchronous networking module. The synchronous networking system 18 is configured to provide a uniform time system signal for the receiver 6, so that the receiver 6 can generate a synthetic frequency signal having the same parameters as the corresponding parameters of the known shore-based radar transmission signal, such as signal pulse width, repetition frequency, initial phase, initial frequency, modulation slope, repetition mode, and the like, so that the buoy-type ground wave radar can synchronously and effectively receive and process the non-backscatter signals of the shore-based radar and the backscatter signals of the sky-wave transmission radar.
The power supply control module 9 is connected with the storage battery assembly 9.1 and the solar photovoltaic assembly 9.2. The invention relates to a buoy type high-frequency ground wave radar which adopts a solar battery and a rechargeable lithium ion battery to jointly supply power. The system has the advantages that various power sources are reasonably utilized, power resources are effectively saved, the system operation time is guaranteed, and the power supply requirement of the system for long-term reliable operation is met. The buoy platform is provided with a battery cabin and an instrument cabin, and the power supply control module 9, the storage battery assembly 9.1 and the solar photovoltaic assembly 9.2 are hermetically installed in the battery cabin.
The gas sensor 13 is a potential-controllable electrolytic sensor, detects the volume fraction of gas by measuring the current flowing during electrolysis, requires a specific voltage to be applied from the outside, and can be used for measuring CO, NO and NO2、SO2And the like.
The invention relates to a buoy type high-frequency ground wave radar working principle:
and (3) a signal compensation algorithm:
aiming at the influence of buoy-type high-frequency ground wave radar buoy motion on radar signals, a signal compensation method is provided, real-time buoy motion states are obtained through common positioning equipment and a three-dimensional gyroscope on a buoy platform, the real-time buoy motion states are converted into phase errors of a buoy antenna array and additional Doppler frequency of received signals, and then the phase errors and the additional Doppler frequency are compensated from radar echo signals, so that the influence of the buoy motion on the radar signals is reduced. The method mainly comprises the following steps: as shown in fig. 8 and 9.
Step 1, obtaining a motion state parameter of a buoy platform, converting the coordinate of the parameter, mapping the motion state parameter under a buoy coordinate system to a geodetic coordinate system, and obtaining the motion state parameter of the buoy platform under the geodetic coordinate system;
and 3, performing digital beam forming on the frequency sweep sequence obtained in the step 2 to obtain a frequency sweep sequence of each beam direction with phase compensation, and performing Doppler frequency compensation on radar receiving signals according to the motion state parameters of the floating platform under the geodetic coordinate system obtained in the step 1 to obtain the frequency sweep sequence of each beam direction with Doppler compensation.
The ocean echo research formed by backward and non-backward scattering models is based on the channel correction algorithm research of interstation direct waves.
Since the buoy type high-frequency ground wave radar can receive multipath cooperative signals transmitted on the shore, the signals provide stable and high-quality calibration sources for the radar array, and therefore amplitude-phase calibration of the buoy radar array can be carried out by using the direct wave signals.
Setting the array element number as M and the spatial orientation of the direct wave between stations asWith a power of
. When the array only has array amplitude-phase errors, the array amplitude-phase error matrix can be interfered by an inter-station direct wave with known spatial orientation
And (6) estimating.
From the model of the received signal:
when the inter-station direct wave interference is actually used for array amplitude and phase error calibration, the covariance matrix of the inter-station direct wave interference
Unknown, covariance matrix estimation is needed. For the interstation direct waves under the synchronous condition, the distance elements of the direct waves are easy to know by using priori knowledge, and for the interstation direct waves under the asynchronous condition, the distance elements are not fixed, so that the distance elements of the direct waves can be estimated firstly. After determining the distance element of direct wave, constructing the inter-station direct wave interference receiving data according to the estimated distance element information
：
Wherein
The position of the direct wave interference between the kth snapshot stations,
and (4) receiving the inter-station direct wave interference for the kth snapshot of the mth channel.
The covariance matrix is then estimated using the received signal:
where k is the number of fast beats.
To array covariance matrix
Performing characteristic decomposition to obtain
Wherein,for the feature vector corresponding to the largest feature value,
is an unknown complex constant.
Can be obtained by
Therefore, amplitude and phase correction information of the buoy array is obtained by using the direct wave.
Fig. 11 and 12 show the results of array amplitude-phase calibration using direct waves between asynchronous and synchronous stations, respectively.
[0039]
Claims (10)
1. The buoy type high-frequency ground wave radar comprises a buoy platform, and the buoy platform is provided with the ground wave radar, and is characterized in that a low-power-consumption computer (8) and an attitude sensing module (2) are arranged on the buoy platform, the low-power-consumption computer (8) is connected with the ground wave radar and the attitude sensing module (2), the low-power-consumption computer (8) is connected with an operation control module (10), and the operation control module (10) is connected with an intelligent power supply control module (9); the operation control module (10) is connected with an anemorumbometer (14) and a gas sensor (13); the low-power-consumption computer (8) is connected with the wireless communication module (11), the photoelectric imaging module (12) and the GPS positioning module (17).
2. The buoyed high frequency ground wave radar according to claim 1, wherein the ground wave radar comprises: the device comprises a receiving antenna (4) and a broadband transmitting antenna (5), wherein the receiving antenna (4) is connected with a receiver (6), the broadband transmitting antenna (5) is connected with a transmitter (7), and the receiver (6) is connected with a low-power-consumption computer (8).
3. Buoy-type high-frequency ground wave radar according to claim 1 or 2, characterized in that the low-power computer (8) is connected to an AIS communication module (15).
4. The buoyed high-frequency ground wave radar according to claim 1 or 2, characterized in that the low-power computer (8) is connected with a wireless alarm module (16).
5. The buoy-type high-frequency ground wave radar as claimed in claim 1, wherein the power supply control module (9) is connected with a storage battery assembly and a solar photovoltaic assembly.
6. The buoyed high-frequency ground wave radar according to claim 2, wherein the ground wave radar comprises a square antenna array, the broadband transmitting antenna (5) is positioned at the center of the square array, and the distance between any two antennas is equal.
7. The buoy-type high-frequency ground wave radar as claimed in claim 2, wherein the transmitter (7) is a multi-frequency dual-channel all-solid-state digital control transmitter and comprises two operating modes of sky wave and ground wave.
8. A buoy type high-frequency ground wave radar is applied to monitoring of ocean dynamics parameters of a sea area with 50-100 km of the periphery of an installation point of the high-frequency ground wave radar.
9. The signal compensation method of the buoy-type high-frequency ground wave radar as claimed in any one of claims 1 to 8, wherein the real-time buoy motion state is obtained through a positioning device and a three-dimensional gyroscope commonly used on a buoy platform, converted into the phase error of a buoy antenna array and the additional Doppler frequency of a received signal, and then compensated from a radar echo signal, thereby reducing the influence of the buoy motion on the radar signal.
10. A signal compensation method according to claim 9, comprising the steps of:
step 1, obtaining a motion state parameter of a buoy platform, converting the coordinate of the parameter, mapping the motion state parameter under a buoy coordinate system to a geodetic coordinate system, and obtaining the motion state parameter of the buoy platform under the geodetic coordinate system;
step 2, calculating array variation generated by buoy movement, and performing amplitude correction and phase compensation on the buoy radar array according to the array variation to obtain a sweep frequency sequence subjected to amplitude correction and phase compensation;
and 3, performing digital beam forming on the frequency sweep sequence obtained in the step 2 to obtain a frequency sweep sequence of each beam direction with phase compensation, and performing Doppler frequency compensation on radar receiving signals according to the motion state parameters of the floating platform under the geodetic coordinate system obtained in the step 1 to obtain the frequency sweep sequence of each beam direction with Doppler compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410037297.9A CN103760552A (en) | 2014-01-26 | 2014-01-26 | Float type high-frequency ground wave radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410037297.9A CN103760552A (en) | 2014-01-26 | 2014-01-26 | Float type high-frequency ground wave radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103760552A true CN103760552A (en) | 2014-04-30 |
Family
ID=50527819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410037297.9A Pending CN103760552A (en) | 2014-01-26 | 2014-01-26 | Float type high-frequency ground wave radar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103760552A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062648A (en) * | 2014-07-11 | 2014-09-24 | 武汉大学 | Distributed-network high-frequency ground wave radar system and control method thereof |
| CN105021228A (en) * | 2015-07-27 | 2015-11-04 | 上海海事大学 | Marine information sensor network systems assisting vessel sailing |
| CN105607053A (en) * | 2015-09-09 | 2016-05-25 | 湖北中南鹏力海洋探测系统工程有限公司 | Buoy-type high-frequency ground wave radar system |
| CN107643514A (en) * | 2017-09-12 | 2018-01-30 | 武汉大学 | A kind of array calibration method of buoy base/shipborne radar based on direct wave |
| CN108519593A (en) * | 2018-03-22 | 2018-09-11 | 电子科技大学 | A kind of asynchronous tracking method based on single station two-frequency CW radar |
| CN109050378A (en) * | 2018-06-11 | 2018-12-21 | 湖北中南鹏力海洋探测系统工程有限公司 | High-frequency ground wave radar marine environmental monitoring vehicle |
| CN109709542A (en) * | 2019-01-08 | 2019-05-03 | 武汉大学 | A kind of portable system for high-frequency earth wave radar |
| CN111157979A (en) * | 2019-12-05 | 2020-05-15 | 武汉大学 | Ionosphere inclination correction system and method based on buoy type double-pass back-tilt detection |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172255A (en) * | 1977-08-08 | 1979-10-23 | The United States Of America As Represented By The Secretary Of The Interior | HF coastal current mapping radar system |
| CN201672919U (en) * | 2010-06-12 | 2010-12-15 | 天津大学 | Medium-and-long-distance full-automatic self-adaptive wave measuring buoy |
| CN103245933A (en) * | 2013-04-17 | 2013-08-14 | 武汉大学 | Motion compensation method for float-type high-frequency over-the-horizon radar |
| CN203673066U (en) * | 2014-01-26 | 2014-06-25 | 湖北中南鹏力海洋探测系统工程有限公司 | Buoy type high-frequency ground wave radar |
-
2014
- 2014-01-26 CN CN201410037297.9A patent/CN103760552A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172255A (en) * | 1977-08-08 | 1979-10-23 | The United States Of America As Represented By The Secretary Of The Interior | HF coastal current mapping radar system |
| CN201672919U (en) * | 2010-06-12 | 2010-12-15 | 天津大学 | Medium-and-long-distance full-automatic self-adaptive wave measuring buoy |
| CN103245933A (en) * | 2013-04-17 | 2013-08-14 | 武汉大学 | Motion compensation method for float-type high-frequency over-the-horizon radar |
| CN203673066U (en) * | 2014-01-26 | 2014-06-25 | 湖北中南鹏力海洋探测系统工程有限公司 | Buoy type high-frequency ground wave radar |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062648A (en) * | 2014-07-11 | 2014-09-24 | 武汉大学 | Distributed-network high-frequency ground wave radar system and control method thereof |
| CN105021228A (en) * | 2015-07-27 | 2015-11-04 | 上海海事大学 | Marine information sensor network systems assisting vessel sailing |
| CN105607053A (en) * | 2015-09-09 | 2016-05-25 | 湖北中南鹏力海洋探测系统工程有限公司 | Buoy-type high-frequency ground wave radar system |
| WO2017041402A1 (en) * | 2015-09-09 | 2017-03-16 | 湖北中南鹏力海洋探测系统工程有限公司 | Buoy-type high-frequency ground wave radar system |
| US10768287B2 (en) | 2015-09-09 | 2020-09-08 | China Precise Ocean Detection Technology Co., Ltd | Buoy-type high frequency ground-wave radar system |
| CN105607053B (en) * | 2015-09-09 | 2018-05-04 | 湖北中南鹏力海洋探测系统工程有限公司 | A kind of float type high-frequency ground wave radar system |
| CN107643514B (en) * | 2017-09-12 | 2019-12-10 | 武汉大学 | array calibration method of buoy-based/shipborne radar based on direct wave |
| CN107643514A (en) * | 2017-09-12 | 2018-01-30 | 武汉大学 | A kind of array calibration method of buoy base/shipborne radar based on direct wave |
| CN108519593A (en) * | 2018-03-22 | 2018-09-11 | 电子科技大学 | A kind of asynchronous tracking method based on single station two-frequency CW radar |
| CN109050378A (en) * | 2018-06-11 | 2018-12-21 | 湖北中南鹏力海洋探测系统工程有限公司 | High-frequency ground wave radar marine environmental monitoring vehicle |
| CN109709542A (en) * | 2019-01-08 | 2019-05-03 | 武汉大学 | A kind of portable system for high-frequency earth wave radar |
| CN111157979A (en) * | 2019-12-05 | 2020-05-15 | 武汉大学 | Ionosphere inclination correction system and method based on buoy type double-pass back-tilt detection |
| CN111157979B (en) * | 2019-12-05 | 2022-05-13 | 武汉大学 | Ionosphere inclination correction system and method based on buoy type double-pass back-tilt detection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103760552A (en) | Float type high-frequency ground wave radar | |
| US10768287B2 (en) | Buoy-type high frequency ground-wave radar system | |
| CN110855343B (en) | Underwater sound positioning and timing buoy and working method thereof | |
| CN105445730B (en) | A kind of Sea Current inverting Spaceborne SAR System and its method based on angle diversity | |
| RU2456634C1 (en) | Method of navigating submarine object using hydroacoustic navigation system | |
| CN110609287A (en) | Double-frequency radar scatterometer and method for simultaneously measuring sea surface wind field and flow field | |
| CN109116360B (en) | A kind of deep-sea real-time high-precision locating method and system | |
| CN110294080B (en) | Method for realizing underwater accurate operation by using ultra-short baseline | |
| CN111142144B (en) | Underwater acoustic positioning and timing buoy and underwater positioning method | |
| CN110988884B (en) | Medium latitude ionosphere detection method based on high-frequency ground wave radar | |
| CN111458732B (en) | Satellite-borne GNSS-R (Global navigation satellite System-reflection) ground remote sensing and atmospheric precipitation integrated detection device and detection method | |
| CN101697011A (en) | Simulation method of bistatic synthetic aperture radar sea wave direction spectrum | |
| CN106768179A (en) | The measuring method of the tidal level based on continuous operation GNSS stations signal-to-noise ratio data | |
| CN107607919B (en) | Method for measuring directional diagram of buoy-based/ship-based high-frequency ground wave radar receiving antenna | |
| Ji et al. | Target monitoring using small-aperture compact high-frequency surface wave radar | |
| CN110865333B (en) | Single-beacon passive acoustic positioning method for underwater glider under influence of ocean currents | |
| CN115150748A (en) | Method, system, electronic device and storage medium for indoor positioning | |
| CN117930206A (en) | Submarine topography measurement system for unmanned surface vehicle and measurement data correction method | |
| CN107643514B (en) | array calibration method of buoy-based/shipborne radar based on direct wave | |
| CN203673066U (en) | Buoy type high-frequency ground wave radar | |
| CN109991564B (en) | Short wave single station positioning result deviation rectifying method based on neural network | |
| Zhou et al. | Portable high frequency surface wave radar OSMAR-S | |
| RU2480791C2 (en) | Meteorological system | |
| Helzel et al. | WERA: Remote ocean sensing for current, wave and wind direction | |
| Guan et al. | Compact Continuous Wave Radar for Water Level Monitoring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140430 |
|
| RJ01 | Rejection of invention patent application after publication |