CN101826924A - Detection method of EIRP (Equivalent Isotropic Radiated Power) value tower and tower-free comparison - Google Patents

Detection method of EIRP (Equivalent Isotropic Radiated Power) value tower and tower-free comparison Download PDF

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CN101826924A
CN101826924A CN201010124054A CN201010124054A CN101826924A CN 101826924 A CN101826924 A CN 101826924A CN 201010124054 A CN201010124054 A CN 201010124054A CN 201010124054 A CN201010124054 A CN 201010124054A CN 101826924 A CN101826924 A CN 101826924A
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tower
eirp
value
eirp value
power
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CN101826924B (en
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刘云阁
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CETC 10 Research Institute
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    • 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
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    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The invention provides a detection method of EIRP (Equivalent Isotropic Radiated Power) value tower and tower-free comparison, aiming to provide a comparison method for measuring an EIRP value of a current system, which only needs prior information of a test that a testing aetenna is oppoite to a tower once without needing the testing aetenna to be opposite to the tower during testing. The method comprises the following steps of: firstly, measuring the EIRP value by adopting a tower mode and recording a high-power-amplification output power PO; then measuring a frequency spectrograph power reading PSPA0 under the same high-power-amplification output power by adopting an offset feed radio closed loop; when a tower and tower-free comparison method is used for detection, setting the high-power-amplification output power to be PO; reading a power value PSPA1 measured by the frequency spectrograph; calculating PSPA1-PSPA0 to obtain the change of the EIRP value; and obtaining the EIRP value of the current system through calculating. In the invention, the offset feed radio closed loop is utilized to conveniently obtain the intensity of downstream signals, and the method has both the convenience of tower-free testing and the precision of tower testing so as to conveniently obtain a more accurate EIRP value of a ground measurement and control station; and the dependence on a calibration tower of the testing in the prior art is avoided.

Description

The EIRP value has tower not have tower comparison detection method
Technical field
The present invention relates to a kind of ground control station equivalent isotropic radiated power (EIRP) value has tower not have tower comparison detection method.
Background technology
At present, in the space flight measurement and control field, the test of ground control station EIRP value all is to adopt the mode that tower is arranged.Place frequency spectrograph, beacon antenna, joint-trial cable on the tower, ground station is to tower, and frequency spectrograph receives the signal that ground station sends on the tower, utilizes frequency spectrograph to measure the intensity of received signal, calculates the EIRP value of system by link.There is following shortcoming in above-mentioned prior art: the one, and each test all needs manually frequency spectrograph to be transported on the calibration tower, and operational antennas is set up the Radio Link to tower to tower.More, the complex steps of the link that whole test relates to; The 2nd, when executing the task as the boat-carrying tracking telemetry and command station, existing does not have the available situation of calibration tower, and the current EIRP value of system can't obtain.
Summary of the invention
In order to overcome the above-mentioned shortcoming of existing method of testing, improve the convenience of test, when task of the present invention provided a kind of test, only needing did not once need tower the prior information of tower test, can record the method that the EIRP value of current system is compared.
Above-mentioned purpose of the present invention can reach by following measure: a kind of EIRP value has tower not have tower comparison detection method, at first is the power output P that obtains the EIRP value and write down high power amplifier with there being tower to test 0, the frequency spectrograph power reading P when adopting the offset-fed wireless closed-loop to record same high power amplifier power output then SPA0, and obtain downstream signal intensity by the offset-fed wireless closed-loop, and follow-up the setting down in the identical systems parameter obtains downstream signal intensity by the offset-fed closed loop, and the signal strength signal intensity that obtains with initial condition compares; When employing had tower not have the detection of tower comparison method, high power amplifier power output was set to P 0, read the performance number P that frequency spectrograph records SPA1, calculate P SPA1-P SPA0Obtain the variation of EIRP value, by calculating the EIRP value that obtains the current system of ground control station.
The present invention than the beneficial effect of prior art is:
The present invention utilizes system's offset-fed wireless closed-loop convenience operation, in conjunction with the prior information that the tower wireless test is obtained, the tower test will be arranged and do not have the tower comparison and combine, the system EIRP value of utilizing single to have the tower test to obtain, and obtain downstream signal intensity by an offset-fed wireless closed-loop, the follow-up setting down in the identical systems parameter obtains downstream signal intensity by the offset-fed closed loop, the signal strength signal intensity that obtains with initial condition compares, have the convenience of no tower test and the precision that has tower to test concurrently, thereby obtain the EIRP value of the current system of ground control station more accurately easily.
Comparison do not need tower by the offset-fed wireless closed-loop only to need when detecting.The convenience and the dependence of test of operation have been improved to the calibration tower.
Description of drawings
Below in conjunction with drawings and Examples this method is further specified.
Fig. 1 is the connection block diagram that the present invention has ground station's working equipment of tower test EIRP value.
Fig. 2 is that the present invention has tower not have the equipment connection block diagram that tower comparison method detects the EIRP value.
Embodiment
Consult Fig. 1.In ground station's working equipment that tower test EIRP value is arranged that Fig. 1 describes, antenna, up link, base band are the working equipment of ground station.Calibration antenna, frequency spectrograph are ground station's supporting test calibration equipment.When the EIRP value had the tower test, the test signal that base band is sent was launched through too high power amplifier and ground observing and controlling station antenna, was received by the calibration antenna and entered frequency spectrograph, was tested the signal power that receives by frequency spectrograph.It is to test mutual conductance under the small-signal state that EIRP has the tower test.High power amplifier output coupling one road is tested high power amplifier real output to power meter, can record received power Pr by test antenna on the calibration tower and frequency spectrograph:
Pr＝EIRPs+Lsp+Gs+Ls+Le(dBw)
Then: EIRP=EIPRs+ (Pmax-Pt)
In the formula: the gain of Gs-calibration tower circular polarized antenna, Ls-cable loss, the high power amplifier rated output power of Pmax-, the high power amplifier real output of Pt-, space loss Lsp=20lgF (MHz)+20lgR (Km)+32.44.
Power output Pt| by the high power amplifier of monitoring record Tower is arrangedAnd EIRP is to tower test value EIRP| Tower is arranged
Consult Fig. 2.The tower of describing at Fig. 2 that has does not have in the equipment that tower comparison method detects EIRP value, high power amplifier HPA, upconverter U/C, put LNA, low-converter D/C, antenna, feed, Test Switchboard network, base band, the intermediate frequency switch matrix is ground station's working equipment.Offset-fed, zero calibration frequency converter, frequency spectrograph are system support test calibration equipment.When the G/T value has tower not have the detection of tower comparison method, the signal that base band is sent is gone out by aerial radiation through upconverter U/C, high power amplifier HPA, receive through offset dipole, be transformed to downstream frequency by zero calibration frequency converter, main antenna receives after down link and Test Switchboard network switch to frequency spectrograph, is measured the signal power of downstream signal by frequency spectrograph.The current EIRP value of ground control station obtains by following computing formula: EIRP=EIRP| Tower is arranged+ (P SPA1-P SPA0).
When having tower not have tower comparison method test EIRP value, no tower beacon is decided P SPA0By shown in Figure 2, the power output of setting high power amplifier is Pt| Tower is arranged, read the performance number P that frequency spectrograph records SPA0Calculate P SPA1-P SPA0Obtain the variation of EIRP value.
In sum, the present invention ground control station EIRP provided by the invention (equivalent isotropically radiated power) value has tower not have the detection method of tower comparison, and its key step is: at first be to adopt the power output P that has the tower mode to record the EIRP value and write down high power amplifier 0, the frequency spectrograph power reading P when adopting the offset-fed wireless closed-loop to record same high power amplifier power output then SPA0Have tower not have when tower comparison method detects high power amplifier power output being set in employing is P 0, read the performance number P that frequency spectrograph records SPA1, calculate P SPA1-P SPA0Obtain the variation of EIRP value, by calculating the EIRP value that obtains current system.
At first be the power output P that obtains the EIRP value and write down high power amplifier with there being tower to test 0, the frequency spectrograph power reading P when adopting the offset-fed wireless closed-loop to record same high power amplifier power output then SPA0, and obtain the descending power signal strength signal intensity by the offset-fed wireless closed-loop, and follow-up the setting down in the identical systems parameter obtains downstream signal intensity by the offset-fed closed loop, and the signal strength signal intensity that obtains with initial condition compares; When employing had tower not have the detection of tower comparison method, high power amplifier power output was set to P 0, read the performance number P that frequency spectrograph records SPA1, calculate P SPA1-P SPA0Obtain the variation of EIRP value, by calculating the EIRP value that obtains the current system of ground control station.

Claims (4)

1. an EIRP value has tower not have tower comparison detection method, at first is the power output P that obtains the EIRP value and write down high power amplifier with there being tower to test 0, the frequency spectrograph power reading P when adopting the offset-fed wireless closed-loop to record same high power amplifier power output then SPA0, and obtain downstream signal intensity by the offset-fed wireless closed-loop, and follow-up the setting down in the identical systems parameter obtains downstream signal intensity by the offset-fed closed loop, and the signal strength signal intensity that obtains with initial condition compares; When employing had tower not have the detection of tower comparison method, high power amplifier power output was set to P 0, read the performance number P that frequency spectrograph records SPA1, calculate P SPA1-P SPA0Obtain the variation of EIRP value, by calculating the EIRP value that obtains the current system of ground control station.
2. EIRP value according to claim 1 has tower not have tower comparison detection method, it is characterized in that described received power Pr:
Pr＝EIRPs+Lsp+Gs+Ls+Le(dBw)
Then: EIRP=EIPRs+ (Pmax-Pt)
In the formula: the gain of Gs-calibration tower circular polarized antenna, Ls-cable loss, the high power amplifier rated output power of Pmax-, the high power amplifier real output of Pt-, space loss Lsp=20lgF (MHz)+20lgR (Km)+32.44.
3. EIRP value according to claim 1 has tower not have tower comparison detection method, it is characterized in that, it is under system's offset-fed less radio-frequency closed-loop case that ground control station EIRP value is obtained, thus by the variation of the received signal intensity of down link obtain the EIRP value change EIRP value up till now.
4. EIRP value according to claim 1 has tower not have tower comparison detection method, and the current EIRP value of ground control station is obtained by following computing formula: EIRP=EIRP| Tower is arranged+ (P SPA1-P SPA0).
CN2010101240540A 2010-03-15 2010-03-15 Detection method of EIRP (Equivalent Isotropic Radiated Power) value tower and tower-free comparison Expired - Fee Related CN101826924B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102710343A (en) * 2011-08-25 2012-10-03 中国电子科技集团公司第十研究所 Ground station equivalent isotropic radiated power (EIRP) value towerless coupling testing method
CN110366743A (en) * 2017-08-24 2019-10-22 深圳市大疆创新科技有限公司 Remote Slave Set, remote controler and remote control system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1554158A (en) * 2001-09-12 2004-12-08 Methods and apparatus for path discovery between a mobile platform and a ground segment
CN1599989A (en) * 2001-12-04 2005-03-23 波音公司 Eirp statistical calculation method
CN101160744A (en) * 2005-03-02 2008-04-09 高通股份有限公司 Radiated power control for a multi-antenna transmission

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1554158A (en) * 2001-09-12 2004-12-08 Methods and apparatus for path discovery between a mobile platform and a ground segment
CN1599989A (en) * 2001-12-04 2005-03-23 波音公司 Eirp statistical calculation method
CN101160744A (en) * 2005-03-02 2008-04-09 高通股份有限公司 Radiated power control for a multi-antenna transmission

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102710343A (en) * 2011-08-25 2012-10-03 中国电子科技集团公司第十研究所 Ground station equivalent isotropic radiated power (EIRP) value towerless coupling testing method
CN102710343B (en) * 2011-08-25 2014-06-18 中国电子科技集团公司第十研究所 Ground station equivalent isotropic radiated power (EIRP) value towerless coupling testing method
CN110366743A (en) * 2017-08-24 2019-10-22 深圳市大疆创新科技有限公司 Remote Slave Set, remote controler and remote control system
CN110366743B (en) * 2017-08-24 2021-09-21 深圳市大疆创新科技有限公司 Remote control assistance device, remote controller, and remote control system

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