CN107294626A - Efficient high bit rate signal test method for bit error rate - Google Patents
Efficient high bit rate signal test method for bit error rate Download PDFInfo
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- CN107294626A CN107294626A CN201710344902.0A CN201710344902A CN107294626A CN 107294626 A CN107294626 A CN 107294626A CN 201710344902 A CN201710344902 A CN 201710344902A CN 107294626 A CN107294626 A CN 107294626A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses a kind of efficient high bit rate signal test method for bit error rate, it comprises the following steps：Step one, high code rate data signal is passed under satellite with noise source to be connected, output work point two-way by noise source plus after making an uproar is connected to frequency spectrograph measurement frequency spectrum and signal to noise ratio, paramount code check demodulated equipment is connected all the way and is demodulated signal all the way；Step 2, opens error rate test software, sets the pendulous frequency N of the software, the number of times is the ratio of satellite down-transmitting data time and single measurement time, the scope of noise source power output is set, and the scope can be set according to the power of signal is passed down, and N is natural number.The present invention not only substantially reduces the bit error rate signal to noise ratio calibration curve time, and ber curve also is demarcated into more accurate.
Description
Technical field
The present invention relates to a kind of satellite ground test method for bit error rate, more particularly to a kind of efficient high bit rate signal is missed
Code check method of testing.
Background technology
With the increasingly increase of user's request, satellite load data volume is gradually increased, and downlink design becomes complicated, its
Include high biography code check etc. down, in addition to channel quality, the design of spreading code is also significant, good spreading code
Type, its noiseproof feature, the down-transmitting data bit error rate is low.
When high code rate data signal is passed under satellite downlink, after signal adds noise, receiver device receives signal
Planisphere become spuious, the data after demodulation have error code, but this phenomenon is not linear, but with specific mathematical
Curve, and this error ratio characteristic curve is just determined by modulation format, if satellite modulator and encoding device operation irregularity or
Person's signal channel is abnormal, it will cause output pattern undesirable, and measure error ratio characteristic curve will be with theoretical curve
Differ greatly.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of efficient high bit rate signal test method for bit error rate, and its is big
The bit error rate-signal to noise ratio calibration curve time is shortened greatly, ber curve is also demarcated more accurate.
The present invention is to solve above-mentioned technical problem by following technical proposals：A kind of efficient high bit rate signal error code
Rate method of testing, it is characterised in that it comprises the following steps：
Step one, high code rate data signal is passed under satellite with noise source to be connected, by noise source plus after making an uproar, output work is divided to two
Road, is connected to frequency spectrograph measurement frequency spectrum and signal to noise ratio, paramount code check demodulated equipment is connected all the way signal is demodulated all the way；
Step 2, opens error rate test software, sets the pendulous frequency N of the software, and the number of times is satellite down-transmitting data
The ratio of time and single measurement time, set the scope of noise source power output, and the scope can be according to the power for passing signal down
To set, N is natural number；
Step 3, starts one-shot measurement pattern, the noise output power of error rate test software design patterns noise source；
Step 4, error rate test software controls the signal to noise ratio of frequency spectrograph measurement signal, and reads the number of the signal to noise ratio
Value is saved；
Step 5, error rate test software controls high code check demodulated equipment to be demodulated signal, and carries out the bit error rate
Test, after error rate measurement terminates, error rate test software reads the numerical value and saved, if pendulous frequency is less than N, from
Step 3 is measured again, until terminating；
Step 6, after the data statistics for completing n times measurement result, draws signal to noise ratio and the mathematic curve of the bit error rate.
Preferably, the noise source is connected with high code check demodulated equipment, frequency spectrograph.
Preferably, the frequency spectrograph shows power spectrum signal, and high code check demodulated equipment demodulates high code rate data, and counts
The bit error rate.
Preferably, the error rate test software controls the noise output power of noise source, controls frequency spectrograph measurement signal
Signal to noise ratio, read high code check demodulated equipment error rate statistics.
The positive effect of the present invention is：The present invention faster can measure signal to noise ratio-mistake by ground test software
Rate curve, demarcates more accurate by ber curve.
Brief description of the drawings
Fig. 1 is the flow chart of the efficient high bit rate signal test method for bit error rate of the present invention.
Embodiment
Present pre-ferred embodiments are provided below in conjunction with the accompanying drawings, to describe technical scheme in detail.
As shown in figure 1, the efficient high bit rate signal test method for bit error rate measuring method of the present invention comprises the following steps：
Step 101, high code rate data signal is passed under satellite with noise source to be connected, by noise source plus after making an uproar, output work is divided to two
Road, is connected to frequency spectrograph measurement frequency spectrum and signal to noise ratio, paramount code check demodulated equipment is connected all the way signal is demodulated all the way；
Step 102, error rate test software is opened, the pendulous frequency N of the software is set, the number of times is satellite down-transmitting data
The ratio of time and single measurement time, set the scope of noise source power output, and the scope can be according to the power for passing signal down
To set, N is natural number；
Step 103, one-shot measurement pattern, the noise output power of error rate test software design patterns noise source are started；
Step 104, error rate test software controls the signal to noise ratio of frequency spectrograph measurement signal, and reads the number of the signal to noise ratio
Value is saved；
Step 105, error rate test software controls high code check demodulated equipment to be demodulated signal, and carries out the bit error rate
Test, after error rate measurement terminates, error rate test software reads the numerical value and saved, if pendulous frequency is less than N, from
Step 103 is measured again, until terminating；
Step 106, after the data statistics for completing n times measurement result, signal to noise ratio and the mathematic curve of the bit error rate are drawn.
The noise source is connected with high code check demodulated equipment, frequency spectrograph, so convenient connection.
The frequency spectrograph shows power spectrum signal, and high code check demodulated equipment demodulates high code rate data, and counts the bit error rate,
Improve accuracy rate.
The error rate test software controls the noise output power of noise source, controls the noise of frequency spectrograph measurement signal
Than reading high code check demodulated equipment error rate statistics, convenient control.
Particular embodiments described above, technical problem, technical scheme and beneficial effect to the solution of the present invention are carried out
It is further described, should be understood that the specific embodiment that the foregoing is only of the invention, be not limited to
The present invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. should be included in this
Within the protection domain of invention.
Claims (4)
1. a kind of efficient high bit rate signal test method for bit error rate, it is characterised in that it comprises the following steps：
Step one, high code rate data signal is passed under satellite with noise source to be connected, output work point two-way, one by noise source plus after making an uproar
Road is connected to frequency spectrograph measurement frequency spectrum and signal to noise ratio, paramount code check demodulated equipment is connected all the way signal is demodulated；
Step 2, opens error rate test software, sets the pendulous frequency N of the software, and the number of times is the satellite down-transmitting data time
With the ratio of single measurement time, the scope of noise source power output is set, the scope can be set according to the power of signal is passed down
Put, N is natural number；
Step 3, starts one-shot measurement pattern, the noise output power of error rate test software design patterns noise source；
Step 4, error rate test software controls the signal to noise ratio of frequency spectrograph measurement signal, and reads the numerical value guarantor of the signal to noise ratio
Store away；
Step 5, error rate test software controls high code check demodulated equipment to be demodulated signal, and carries out error rate test,
After error rate measurement terminates, error rate test software reads the numerical value and saved, if pendulous frequency is less than N, from step
Three measure again, until terminating；
Step 6, after the data statistics for completing n times measurement result, draws signal to noise ratio and the mathematic curve of the bit error rate.
2. high bit rate signal test method for bit error rate as claimed in claim 1 efficient, it is characterised in that the noise source with
High code check demodulated equipment, frequency spectrograph connection.
3. efficient high bit rate signal test method for bit error rate as claimed in claim 1, it is characterised in that the frequency spectrograph shows
Show power spectrum signal, high code check demodulated equipment demodulates high code rate data, and counts the bit error rate.
4. efficient high bit rate signal test method for bit error rate as claimed in claim 1, it is characterised in that the bit error rate is surveyed
The noise output power that software controls noise source is tried, the signal to noise ratio of frequency spectrograph measurement signal is controlled, reads high code check demodulated equipment
Error rate statistics.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211862A (en) * | 2019-12-17 | 2020-05-29 | 西安空间无线电技术研究所 | Remote sensing satellite channel code coding gain test method |
| CN113346967A (en) * | 2021-05-10 | 2021-09-03 | 上海卫星工程研究所 | Satellite data transmission error rate index testing system and method |
| CN113791433A (en) * | 2021-08-18 | 2021-12-14 | 上海卫星工程研究所 | Satellite remote bit error rate test system, test method and system |
| CN115190048A (en) * | 2022-06-20 | 2022-10-14 | 上海精密计量测试研究所 | Low-bit-rate signal demodulation and bit error rate testing device and testing method thereof |
| CN115347986A (en) * | 2022-10-19 | 2022-11-15 | 航天恒星科技有限公司 | Method and system for testing bit error rate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211862A (en) * | 2019-12-17 | 2020-05-29 | 西安空间无线电技术研究所 | Remote sensing satellite channel code coding gain test method |
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| CN113346967A (en) * | 2021-05-10 | 2021-09-03 | 上海卫星工程研究所 | Satellite data transmission error rate index testing system and method |
| CN113346967B (en) * | 2021-05-10 | 2022-10-25 | 上海卫星工程研究所 | Satellite data transmission error rate index testing system and method |
| CN113791433A (en) * | 2021-08-18 | 2021-12-14 | 上海卫星工程研究所 | Satellite remote bit error rate test system, test method and system |
| CN113791433B (en) * | 2021-08-18 | 2024-04-02 | 上海卫星工程研究所 | Satellite telemetry bit error rate test system and test method |
| CN115190048A (en) * | 2022-06-20 | 2022-10-14 | 上海精密计量测试研究所 | Low-bit-rate signal demodulation and bit error rate testing device and testing method thereof |
| CN115347986A (en) * | 2022-10-19 | 2022-11-15 | 航天恒星科技有限公司 | Method and system for testing bit error rate |
| CN115347986B (en) * | 2022-10-19 | 2023-03-24 | 航天恒星科技有限公司 | Method and system for testing bit error rate |
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Application publication date: 20171024 |