CN106549680A - A kind of medium wave pilot power self-adjusting method and system - Google Patents
A kind of medium wave pilot power self-adjusting method and system Download PDFInfo
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- CN106549680A CN106549680A CN201610948473.3A CN201610948473A CN106549680A CN 106549680 A CN106549680 A CN 106549680A CN 201610948473 A CN201610948473 A CN 201610948473A CN 106549680 A CN106549680 A CN 106549680A
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- signal
- power
- medium wave
- output signal
- self
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
- H04B1/0017—Digital filtering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
- H04B1/0042—Digital filtering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
Abstract
The invention provides a kind of medium wave pilot power self-adjusting method and system, a kind of medium wave pilot power self-adjusting method, comprise the following steps：Obtain output signal power and input signal power；According to the output signal power and the input signal power, signal level is obtained；If the signal level belongs to preset signals level range, the output signal power output signal is kept；If the signal level is not belonging to the signal level range, the output signal power is adjusted.A kind of medium wave pilot power self-adjusting system, including：Signal source, power amplification unit, harmonic filter, launch terminal, receiving terminal, monitoring unit, equipment network control platform.The present invention obtains signal level by the output signal power of signal source and the input signal power of receiving terminal, and monitoring unit monitors the signal level, and sends a command to signal source, realizes the self-regulation of medium wave navigation system power.
Description
Technical field
The invention belongs to wireless communication field, more particularly to a kind of medium wave pilot power self-adjusting method and system.
Background technology
Medium wave navigation terminal and telecompass cooperating on machine, constitute medium wave navigation system, telecompass on machine
The signal of medium wave navigation terminal transmitting is received, after carrying out process conversion, radio-compass indicator indicates the relative of guidance station
Azimuth, i.e. aircraft longitudinal axis (heading) and the angle between aircraft and guidance station line, it can be seen that being medium wave from this
Navigation system is point-to-area navigation system.According in strong noise area, in order to obtain satisfied signal in the specified area of coverage,
Minimum field strength value should be 120mV/m, and the signal launched by medium wave navigation terminal reaches the area of coverage maximum distance of the field intensity value,
Then this is apart from referred to as operating distance.But at present for medium wave navigation terminal is reaching the power required for predetermined operating distance
Size, can only lean on drawing during development away from data and conventional antenna current data as a reference to artificially adjustment power is big
It is little.
The Chinese invention patent of Application No. 201210544728.1 discloses the method and dress of dynamic adjustment transmission power
Put, intelligent terminal, methods described includes：Obtain the performance number of received wireless signal；Judge whether the performance number is located at pre-
If threshold range, when being, uncomfortable whole transmission power, otherwise adjusts transmission power.The present invention discloses a kind of dynamic adjustment
The device and intelligent terminal of transmission power.The technical scheme of the invention reduces indigo plant in the case where Bluetooth communication quality is ensured
The power consumption of tooth equipment and electromagnetic radiation.In the program, bluetooth equipment is at least two equipment, is in communication with each other, can be from reception
End judge the distance and power of communications of other side assume the power of one's own side if appropriate for, so as to adjust one's own side's power, at the same its
For short haul connection (80-100m), but medium wave navigation terminal is separate unit unidirectional emission signal, and is that telecommunication (at least will
Seek tens kms), therefore the method is not suitable for medium wave navigation system.
The content of the invention
The technical problem to be solved is：A kind of medium wave air navigation aid there is provided intelligent guarantee operating distance and
System, realizes the Intelligent adjustment of medium wave navigation system power demand in the preset distance.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is：
A kind of medium wave pilot power self-adjusting method, comprises the following steps：
S1：Obtain output signal power and input signal power；
S2：According to the output signal power and the input signal power, signal level is obtained；
S3：If the signal level belongs to preset signals level range, the output signal power output signal is kept；
S4：If the signal level is not belonging to the signal level range, the output signal power is adjusted.
The beneficial effects of the present invention is：
According to output signal power and input signal power, signal level is obtained, by the signal level, it is known that signal
The attenuation degree of power in transmitting procedure, and judge whether the signal level belongs to preset signals level range, and send
Instruct to signal source, output signal power is adjusted by signal source, realizes that medium wave navigation terminal is reaching predetermined operating distance
The self-regulation of output signal power demand size.
Present invention also offers a kind of medium wave pilot power self-adjusting system, including：It is signal source, power amplification unit, humorous
Wave filter, launch terminal, receiving terminal, monitoring unit, equipment network control platform；
The signal source is connected with the power amplification unit；
The power amplification unit is connected with the harmonic filter；
The harmonic filter is connected with the launch terminal；
The receiving terminal is connected with the launch terminal；
The signal source is set up both-way communication with the monitoring unit and is connected；
The equipment network control platform is set up both-way communication with the monitoring unit and is connected；
The receiving terminal is set up both-way communication with the equipment network control platform and is connected.
The beneficial effects of the present invention is：
By signal source output signal, Jing power amplification units amplify signal, and Jing harmonic filters are filtered, by sending out
Terminal transmission signal is penetrated, receiving terminal receives signal, obtains input signal；According to output signal power and input signal power,
Signal level is obtained, the signal level is uploaded to into equipment network control platform, if the signal level is not belonging to preset signals electricity
Flat scope, sends a command to signal source by monitoring unit, and signal source centering ripple navigation terminal is reaching predetermined operating distance
When output signal power demand size carry out Intelligent adjustment.
Description of the drawings
Schematic diagrames of the Fig. 1 for a kind of key step of medium wave pilot power self-adjusting method of the embodiment of the present invention；
Structural representations of the Fig. 2 for a kind of medium wave pilot power self-adjusting system of the embodiment of the present invention.
Label declaration：
1st, signal source；2nd, power amplification unit；3rd, harmonic filter；4th, case is adjusted in day；5th, transmitting antenna；6th, reception antenna；
7th, receiver；8th, demodulating unit；9th, equipment network control platform；10th, monitoring unit；11st, launch terminal；12nd, receiving terminal.
Specific embodiment
By describing the technology contents of the present invention in detail, realizing purpose and effect, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is：By signal source output signal power and the input signal work(of receiving terminal
Rate, obtains signal level, and monitoring unit monitors the signal level, and sends a command to signal source, realizes medium wave navigation system
The self-regulation of power.
Fig. 1 is refer to, a kind of medium wave pilot power self-adjusting method is comprised the following steps：
S1：Obtain output signal power and input signal power；
S2：According to the output signal power and the input signal power, signal level is obtained；
S3：If the signal level belongs to preset signals level range, the output signal power output signal is kept；
S4：If the signal level is not belonging to the signal level range, the output signal power is adjusted.
Knowable to foregoing description, the beneficial effects of the present invention is：According to output signal power and input signal power, obtain
To signal level, by the signal level, it is known that the attenuation degree of signal power in transmitting procedure, and judge the signal
Whether level belongs to preset signals level range, and sends a command to signal source, adjusts output signal power by signal source, real
Existing medium wave navigation terminal is in the self-regulation for reaching predetermined operating distance output signal power demand size.
Further, the S4 is specially：
If the signal level increases the output signal power more than the higher limit of the signal level range；
If the signal level reduces the output signal power less than the lower limit of the signal level range.
Seen from the above description, medium wave navigation terminal is capable of achieving by said method defeated when predetermined operating distance is reached
Go out the Intelligent adjustment of the power demand size of signal.
Further, the output signal power is adjusted, specially：Believed by increasing or decreasing the output drive of signal source
Number duty cycle adjustment described in output signal power.
Seen from the above description, the precision of power output is realized by the dutycycle of the output drive signal in Regulate signal source
Adjust.
Further, the input signal power is obtained, specially：
Receiving terminal receives the output signal of launch terminal transmitting, obtains the first signal；
First signal is demodulated, input signal is obtained；
According to the input signal, input signal power is obtained.
Knowable to foregoing description, by demodulating first signal, input signal is obtained, is obtained by the input signal
Input signal power.
Further, before demodulating first signal, also include：Using low-pass filter unit filtering first letter
Number.
Knowable to foregoing description, first signal is filtered by low-pass filter unit, can be filtered higher than cut-off frequency
Signal.
Refer to Fig. 2, a kind of medium wave pilot power self-adjusting system, including：Signal source 1, power amplification unit 2, harmonic wave
Wave filter 3, launch terminal 11, receiving terminal 12, monitoring unit 10, equipment network control platform 9；
The signal source 1 is connected with the power amplification unit 2；
The power amplification unit 2 is connected with the harmonic filter 3；
The harmonic filter 3 is connected with the launch terminal 11；
The receiving terminal 12 is connected with the launch terminal 11；
The signal source 1 is set up both-way communication with the monitoring unit 10 and is connected；
The equipment network control platform 9 is set up both-way communication with the monitoring unit 10 and is connected；
The receiving terminal 12 is set up both-way communication with the equipment network control platform 9 and is connected.
Knowable to foregoing description, the beneficial effects of the present invention is：By signal source output signal, Jing power amplification units
Amplify signal, and Jing harmonic filters are filtered, by launch terminal transmission signal, receiving terminal receives signal, is input into
Signal；According to output signal power and input signal power, signal level is obtained, the signal level is uploaded to into equipment network control
Platform, if the signal level is not belonging to preset signals level range, sends a command to signal source, signal source by monitoring unit
Centering ripple navigation terminal power demand size of output signal when predetermined operating distance is reached carries out Intelligent adjustment.
Further, the launch terminal 11 includes：It adjusts case 4, transmitting antenna 5；
Case 4 is adjusted to be connected with the harmonic filter 3 in the day；
Case 4 is adjusted to be connected with the transmitting antenna 5 in the day.
Knowable to foregoing description, harmonic filter transmits a signal to day and adjusts case, day to adjust case to match somebody with somebody humorous to send out with transmitting antenna
Penetrate signal.
Further, the receiving terminal 12 includes：Reception antenna 6, receiver 7, demodulating unit 8；
The reception antenna 6 is connected with the receiver 7；
The demodulating unit 8 is connected with the receiver 7.
Knowable to foregoing description, reception antenna receives signal, and transmits it to receiver, after receiver is filtered,
Demodulating unit is transmitted a signal to again, and demodulating unit demodulates the signal.
Further, the receiver 7, including：Low-pass filter unit；
The low-pass filter unit is connected with the demodulating unit 8；
The reception antenna 6 is connected with the low-pass filter unit.
Knowable to foregoing description, the signal that reception antenna is received is filtered by the low-pass filter unit, and will
Filtered signal transmission is to demodulating unit.
Further, the demodulating unit 8 is set up both-way communication with the equipment network control platform 9 and is connected.
Knowable to foregoing description, the equipment network control platform sends a command to the demodulating unit, demodulating unit demodulation letter
Number, input signal is obtained, input signal power is obtained according to the input signal, sent the input signal power and set to described
Standby network control platform.
Fig. 1 is refer to, embodiments of the invention one are：
S1：Obtain output signal power and input signal power；
S2：According to the output signal power and the input signal power, signal level is obtained；
S3：If the signal level belongs to preset signals level range, the output signal power output signal is kept；
S4：If the signal level is more than the higher limit of the signal level range, by the output for increasing signal source
The dutycycle of pumping signal, so as to increase the output signal power；If the signal level is less than the signal level range
Lower limit, then by reduce signal source output drive signal dutycycle, so as to reduce the output signal power.
The embodiment two of this programme is：
Medium wave navigation terminal transmission signal need transmit to operating distance, signal source according to the operating distance
Corresponding power output output signal, and the output signal is launched by launch terminal；Receiving terminal receives launch terminal transmitting
Output signal, obtain the first signal；And first signal is carried out into LPF, demodulation, obtain input signal；According to institute
The power of the power and the input signal of output signal is stated, signal level is obtained；If the signal level is in preset signals electricity
The power of the output signal in flat scope, is not then adjusted；If the signal level is more than the preset signals level range
Higher limit, monitoring unit send a command to signal source, and signal source increases the dutycycle of output drive signal, described defeated so as to increase
Go out the power of signal；If the signal level sends instruction less than the lower limit of the preset signals level range, monitoring unit
To signal source, signal source reduces the dutycycle of output drive signal, so as to reduce the power of the output signal.
Fig. 2 is refer to, embodiments of the invention three are：
A kind of medium wave pilot power self-adjusting system, including：
Signal source 1, power amplification unit 2, harmonic filter 3, launch terminal 11, receiving terminal 12, monitoring unit 10, set
Standby network control platform 9；The launch terminal 11 includes：It adjusts case 4, transmitting antenna 5；The receiving terminal 12 includes：Reception antenna
6th, receiver 7, demodulating unit 8；The receiver 7, including：Low-pass filter unit；
The signal source 1 sets up both-way communication by wired connection with the monitoring unit 10；The signal source 1 with it is described
2 wired connection of power amplification unit；The power amplification unit 2 and 3 wired connection of the harmonic filter；The harmonic
Device 3 adjusts case 4 to pass through wired connection with the day；Adjust case 4 and 5 wired connection of the transmitting antenna in the day；The transmitting antenna 5
Wirelessly it is connected with the reception antenna 6；The reception antenna 6 and 7 wired connection of the receiver；The low-pass filter unit with
8 wired connection of the demodulating unit；The demodulating unit 8 sets up two-way by wired connection with the equipment network control platform 9
News；The monitoring unit 10 sets up both-way communication by wired connection with the equipment network control platform 9.
In sum, the present invention is provided a kind of medium wave pilot power self-adjusting method and system, are exported by signal source
Signal, Jing power amplification units harmony wave filter, by launch terminal transmission signal, receiving terminal receives signal, carries out low pass
Filtering, demodulation, obtain input signal；According to output signal power and input signal power, signal level is obtained, by the letter
Number level, it is known that the attenuation degree of signal power in transmitting procedure, and the signal level is uploaded to into equipment network control platform,
If the signal level is not belonging to preset signals level range, signal source is sent a command to by monitoring unit, signal source is adjusted
Output signal power, realizes the output signal power demand self-regulation when predetermined operating distance is reached of medium wave navigation terminal.
Embodiments of the invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, it is every using this
The equivalents made by bright specification and accompanying drawing content, or the technical field of correlation is directly or indirectly used in, include in the same manner
In the scope of patent protection of the present invention.
Claims (10)
1. a kind of medium wave pilot power self-adjusting method, it is characterised in that comprise the following steps：
S1：Obtain output signal power and input signal power；
S2：According to the output signal power and the input signal power, signal level is obtained；
S3：If the signal level belongs to preset signals level range, the output signal power output signal is kept；
S4：If the signal level is not belonging to the signal level range, the output signal power is adjusted.
2. a kind of medium wave pilot power self-adjusting method according to claim 1, it is characterised in that the S4 is specially：
If the signal level increases the output signal power more than the higher limit of the signal level range；
If the signal level reduces the output signal power less than the lower limit of the signal level range.
3. a kind of medium wave pilot power self-adjusting method according to claim 1, it is characterised in that adjust the output letter
Number power, specially：By output signal power described in the duty cycle adjustment of the output drive signal for increasing or decreasing signal source.
4. a kind of medium wave pilot power self-adjusting method according to claim 1, it is characterised in that obtain the input letter
Number power, specially：
Receiving terminal receives the output signal of launch terminal transmitting, obtains the first signal；
First signal is demodulated, input signal is obtained；
According to the input signal, input signal power is obtained.
5. a kind of medium wave pilot power self-adjusting method according to claim 4, it is characterised in that demodulation first letter
Number before, also include：First signal is filtered using low-pass filter unit.
6. a kind of medium wave pilot power self-adjusting system, it is characterised in that include：
Signal source, power amplification unit, harmonic filter, launch terminal, receiving terminal, monitoring unit, equipment network control platform；
The signal source is connected with the power amplification unit；
The power amplification unit is connected with the harmonic filter；
The harmonic filter is connected with the launch terminal；
The receiving terminal is connected with the launch terminal；
The signal source is set up both-way communication with the monitoring unit and is connected；
The equipment network control platform is set up both-way communication with the monitoring unit and is connected；
The receiving terminal is set up both-way communication with the equipment network control platform and is connected.
7. a kind of medium wave pilot power self-adjusting system according to claim 6, it is characterised in that the launch terminal bag
Include：It adjusts case, transmitting antenna；
Case is adjusted to be connected with the harmonic filter in the day；
Case is adjusted to be connected with the transmitting antenna in the day.
8. a kind of medium wave pilot power self-adjusting system according to claim 6, it is characterised in that the receiving terminal bag
Include：Reception antenna, receiver, demodulating unit；
The reception antenna is connected with the receiver；
The demodulating unit is connected with the receiver.
9. a kind of medium wave pilot power self-adjusting system according to claim 8, it is characterised in that the receiver, bag
Include：Low-pass filter unit；
The low-pass filter unit is connected with the demodulating unit；
The reception antenna is connected with the low-pass filter unit.
10. a kind of medium wave pilot power self-adjusting system according to claim 8, it is characterised in that the demodulating unit
Both-way communication is set up with the equipment network control platform to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610948473.3A CN106549680A (en) | 2016-11-02 | 2016-11-02 | A kind of medium wave pilot power self-adjusting method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610948473.3A CN106549680A (en) | 2016-11-02 | 2016-11-02 | A kind of medium wave pilot power self-adjusting method and system |
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| CN106549680A true CN106549680A (en) | 2017-03-29 |
Family
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| CN201610948473.3A Pending CN106549680A (en) | 2016-11-02 | 2016-11-02 | A kind of medium wave pilot power self-adjusting method and system |
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Cited By (1)
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Application publication date: 20170329 |
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