CN200996994Y - Mono-antenna radio height meter - Google Patents
Mono-antenna radio height meter Download PDFInfo
- Publication number
- CN200996994Y CN200996994Y CN 200620049336 CN200620049336U CN200996994Y CN 200996994 Y CN200996994 Y CN 200996994Y CN 200620049336 CN200620049336 CN 200620049336 CN 200620049336 U CN200620049336 U CN 200620049336U CN 200996994 Y CN200996994 Y CN 200996994Y
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- microprocessor
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Abstract
A Single antenna transmitting altimeter, which is characterized in that comprises an aerial and a height measurement circuit; the height measurement circuit is connected with the aerial and consists of a ring-like device, a microwave transmitting element, a microwave receiving element, an intermediate frequency filter, a main amplifier, a microprocessor and a triangle generator. The microwave transmitting element is used to receive the modulation signals from the triangle generator; the ring-like device achieves the both-way junction with the aerial and is connected with the output end of the microwave transmitting element, so as to receive the signals therefrom. The microwave receiving element is used to receive the signals from the ring-like device and the local oscillation signals from the microwave transmitting element. After frequency mixing, the intermediate frequency signals are produced and transmitted to the intermediate frequency filter; sequential connection is realized among the intermediate frequency filter, the main amplifier, the microprocessor, the triangle generator and the microwave transmitting element. The intermediate frequency signals received are filtered in the intermediate frequency filter and then enlarged and delivered to the microprocessor via the main amplifier. The filtered intermediate frequency signals are counted by the microprocessor so as to output the altitude information for the transmitting altimeter. Also, the triangle generator is controlled by the microprocessor, so that the triangle generator could output modulation signals to the microwave transmitting element.
Description
Technical field
The utility model relates to radio altimeter, specifically is exactly a kind of single-antenna wireless electrical height table that adopts shared single antenna as dual-mode antenna.
Background technology
Radio altimeter be a kind of be reflecting surface with the earth surface, utilize to measure the principle that electromagnetic wave propagation postpones, determine a kind of height finding radar of earth surface sky aircraft height, be widely used at present in the aircraft such as various guided missiles, unmanned plane, aircraft.
The common radio height indicator uses emission and receives the double antenna working method, and is very high to the installation requirement of antenna, requires emission and receiving antenna separated by a distance, and to reach the transmit/receive antenna insulated degree requirement, the assurance radio altimeter is normally surveyed height.Along with the development of Aero-Space and military technology, the function of all kinds of aircraft is more and more stronger, and the plug-in device of flying body is more and more, and volume is more and more littler.On these flying bodies, seek and to satisfy antenna insulated degree requirement, the radio altimeter antenna installation site that reaches the requirement of flying body overall installation again is very difficult, sometimes can not find at all very that large space goes to satisfy the requirement of radio altimeter to the antenna installation site, influenced the use of radio altimeter on these flying bodies.
Summary of the invention
The utility model is to have the above-mentioned shortcoming that the common radio height indicator exists now in order to overcome, and a kind of single-antenna wireless electrical height table that adopts shared single antenna as dual-mode antenna that provides.
For achieving the above object, the utility model single-antenna wireless electrical height table is characterized in, comprises antenna, circulator, microwave transmitter unit, microwave receiving unit, intermediate-frequency filter, main amplifier, microprocessor, triangular-wave generator;
Described microwave transmitter unit is used to receive the modulation signal of triangular-wave generator output;
Described circulator is connected with antenna is two-way, and this circulator also is connected with the output terminal of microwave transmitter unit, receives the signal of microwave transmitter unit output;
Described microwave receiving unit is used to receive the signal of circulator output and the local oscillation signal of microwave transmitter unit output, produces receiving intermediate frequency signal and output to intermediate-frequency filter after mixing;
Described intermediate-frequency filter, main amplifier, microprocessor, triangular-wave generator and microwave transmitter unit are linked in sequence; Wherein: described receiving intermediate frequency signal amplifies through intermediate-frequency filter filtering and through main amplifier delivers to microprocessor; Microprocessor is counted filtered receiving intermediate frequency signal, output radio altimeter altitude information; Simultaneously, described microprocessor is also controlled triangular-wave generator, makes triangular-wave generator output modulation signal to the microwave transmitter unit.
Above-mentioned single-antenna wireless electrical height table, wherein, described circulator adopts junction type band line microstrip circuit version.
Above-mentioned single-antenna wireless electrical height table, wherein, described intermediate-frequency filter adopts the multi-stage filter chip.
Above-mentioned single-antenna wireless electrical height table wherein, also comprises a housing, and described antenna is arranged on outside the housing, and described height metering circuit is arranged in the housing, is electrically connected with antenna.
Above-mentioned single-antenna wireless electrical height table wherein, also comprises the power switch and the operating switch that are electrically connected with the height metering circuit that are located on the case panel.
Because the utility model has adopted above technical scheme, solved the problem of radio altimeter antenna requirements of installation space height, installation site difficulty, the dirigibility of single-antenna wireless electrical height table whole machine installation is improved, has guaranteed the use of radio altimeter on flying body.
Description of drawings
Concrete structure of the present utility model is further provided by embodiment and accompanying drawing thereof once.
Fig. 1 is the electrical block diagram of the utility model single-antenna wireless electrical height table.
Embodiment
See also Fig. 1.The utility model single-antenna wireless electrical height table, comprise antenna 1 and the height metering circuit 2 that is electrically connected with this antenna, described height metering circuit 2 comprises: circulator 21, microwave transmitter unit 22, microwave receiving unit 23, intermediate-frequency filter 24, main amplifier 25, microprocessor 26, triangular-wave generator 27.Described circulator is connected with antenna is two-way, and this circulator also receives the signal that the microwave transmitter unit is exported; Described microwave receiving unit receives the signal of circulator output and the local oscillation signal of microwave transmitter unit output respectively, and the output terminal of this microwave receiving unit also is connected with the input end of intermediate-frequency filter; Described intermediate-frequency filter, main amplifier, microprocessor, triangular-wave generator and microwave transmitter unit are linked in sequence.
Described microwave transmitter unit is subjected to the modulation signal control of triangular-wave generator output to produce the continuous wave frequency signal, and this signal sub-fraction is as the local oscillation signal of microwave receiving unit, and most of energy enters the antenna emission by circulator;
Described echoed signal is received by antenna after circulator is fed to the microwave receiving unit, delivers to intermediate-frequency filter with generation receiving intermediate frequency signal after the local oscillation signal mixing;
Described receiving intermediate frequency signal amplifies through intermediate-frequency filter filtering and through main amplifier delivers to microprocessor;
Described microprocessor is counted filtered receiving intermediate frequency signal, the output altitude information, and these data are the altitude information that radio altimeter records; Simultaneously, microprocessor is also controlled triangular-wave generator, makes triangular-wave generator output modulation signal to the microwave transmitter unit.
In the utility model single-antenna wireless electrical height table, circulator is one of key element of single-antenna wireless electrical height table design.Transmitting of radio altimeter can leak into receiving end by circulator, so that the bad generation low clearance of isolation undesired signal in the machine, influences the height indicator altimetry precision.Be to suppress the leakage that transmits, the isolation of circulator has been proposed strict requirement, circulator of the present utility model adopts junction type band line microstrip circuit version, and this circulator is inner to have good coupling with output, increases circulator isolation performance.
In the utility model single-antenna wireless electrical height table, intermediate-frequency filter also is one of critical component of single-antenna wireless electrical height table design.Because the single radio height indicator is limit by circulator isolation performance, still is mixed with a large amount of transmit leakage signal in received signal, produce low-frequency interference signal.Be effective filtering low-frequency interference signal, intermediate-frequency filter must have good stopband attenuation performance, so the intermediate-frequency filter in the present embodiment adopts the multi-stage filter chip.
The utility model can also comprise a housing, and described antenna is arranged on outside the housing, and described height metering circuit is arranged in the housing, is electrically connected with antenna.The power switch and the operating switch that are electrically connected with the height metering circuit are set on case panel.
The utility model has improved the dirigibility that makes single-antenna wireless electrical height table whole machine installation, makes radio altimeter antenna easy for installation, and has saved starting material, has reduced production cost, has better practicability and economy.
Claims (5)
1, single-antenna wireless electrical height table is characterized in that, comprises antenna, the height metering circuit that is connected with this antenna point; Described height metering circuit comprises: circulator, microwave transmitter unit, microwave receiving unit, intermediate-frequency filter, main amplifier, microprocessor, triangular-wave generator;
Described microwave transmitter unit is used to receive the modulation signal of triangular-wave generator output;
Described circulator is connected with antenna is two-way, and this circulator also is connected with the output terminal of microwave transmitter unit, receives the signal of microwave transmitter unit output;
Described microwave receiving unit is used to receive the signal of circulator output and the local oscillation signal of microwave transmitter unit output, produces receiving intermediate frequency signal and output to intermediate-frequency filter after mixing;
Described intermediate-frequency filter, main amplifier, microprocessor, triangular-wave generator and microwave transmitter unit are linked in sequence; Wherein: described receiving intermediate frequency signal amplifies through intermediate-frequency filter filtering and through main amplifier delivers to microprocessor; Microprocessor is counted filtered receiving intermediate frequency signal, output radio altimeter altitude information; Simultaneously, described microprocessor is also controlled triangular-wave generator, makes triangular-wave generator output modulation signal to the microwave transmitter unit.
2, single-antenna wireless electrical height table according to claim 1 is characterized in that, described circulator adopts junction type band line microstrip circuit version.
3, single-antenna wireless electrical height table according to claim 1 is characterized in that, described intermediate-frequency filter adopts the multi-stage filter chip.
4, single-antenna wireless electrical height table according to claim 1 is characterized in that, also comprise a housing, described antenna is arranged on outside the housing, and described height metering circuit is arranged in the housing, is electrically connected with antenna.
5, single-antenna wireless electrical height table according to claim 4 is characterized in that, also comprises the power switch and the operating switch that are electrically connected with the height metering circuit that are located on the case panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620049336 CN200996994Y (en) | 2006-12-21 | 2006-12-21 | Mono-antenna radio height meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620049336 CN200996994Y (en) | 2006-12-21 | 2006-12-21 | Mono-antenna radio height meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200996994Y true CN200996994Y (en) | 2007-12-26 |
Family
ID=38995429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620049336 Expired - Fee Related CN200996994Y (en) | 2006-12-21 | 2006-12-21 | Mono-antenna radio height meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200996994Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256231B (en) * | 2008-04-03 | 2010-11-03 | 北京航空航天大学 | Apparatus for correcting lifting speed of radio altimeter |
| CN101667329B (en) * | 2008-09-01 | 2013-01-16 | 松下电器产业株式会社 | Wireless device and measuring device provided with the same |
| CN106092040A (en) * | 2016-05-30 | 2016-11-09 | 中国电子科技集团公司第五十研究所 | Eliminate the system and method for FMCW altimeter precision drift |
-
2006
- 2006-12-21 CN CN 200620049336 patent/CN200996994Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256231B (en) * | 2008-04-03 | 2010-11-03 | 北京航空航天大学 | Apparatus for correcting lifting speed of radio altimeter |
| CN101667329B (en) * | 2008-09-01 | 2013-01-16 | 松下电器产业株式会社 | Wireless device and measuring device provided with the same |
| CN106092040A (en) * | 2016-05-30 | 2016-11-09 | 中国电子科技集团公司第五十研究所 | Eliminate the system and method for FMCW altimeter precision drift |
| CN106092040B (en) * | 2016-05-30 | 2018-08-24 | 中国电子科技集团公司第五十研究所 | The system and method for eliminating FMCW altimeter precision drifts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071226 Termination date: 20121221 |