CN103957063A - Universal receiver testing system of ultrashort wave communication equipment and testing method thereof - Google Patents
Universal receiver testing system of ultrashort wave communication equipment and testing method thereof Download PDFInfo
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- CN103957063A CN103957063A CN201410142634.0A CN201410142634A CN103957063A CN 103957063 A CN103957063 A CN 103957063A CN 201410142634 A CN201410142634 A CN 201410142634A CN 103957063 A CN103957063 A CN 103957063A
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Abstract
The invention discloses a universal receiver testing system of ultrashort wave communication equipment and a testing method of the universal receiver testing system of the ultrashort wave communication equipment. The universal receiver testing system of the ultrashort wave communication equipment comprises a receiver used for testing, a control panel, a control processing board, a testing board and a signal interconnecting box, wherein the control panel, the control processing board, the testing board and the signal interconnecting box are connected in sequence, and the signal interconnecting box is connected with the receiver. The testing system further comprises a local frequency source used for producing the mixing frequency of the receiver, wherein the local frequency source is respectively connected with the control processing board and the receiver, and the control processing board is further connected with the signal interconnecting box. A testing platform can provide the local frequency source for the receiver, generate control signals, and achieve the signal transfer function, the function of providing a test interface and the like. According to the testing platform, the capacity of the receiver for suppressing the image frequency and clutter is enhanced, the input dynamic range is widened, the complete machine sensitivity is improved, and the performance index requirements of a wireless communication system for communication distance, the data transmission error rate and voice communication intelligibility are met.
Description
Technical field
The present invention relates to communication equipment technical field, relate in particular to a kind of ultra short wave communication Device-General receiver test system and method for testing thereof.
Background technology
At wireless communication field, communication equipment becomes increasingly complex, high-tech content is more and more, function from strength to strength, therefore the receiver of Wireless Telecom Equipment is had higher requirement, require receiver image frequency and clutter to suppress ability strong, input dynamic range and machine sensitivity are high, therefore, we must provide test platform to the high-precision technical indicator of receiver and huge information flow.
Summary of the invention
The present invention solves existing technical problem in prior art, the first object of the present invention is to provide a kind of ultra short wave communication Device-General receiver test system, and the second object of the present invention is to provide a kind of method of testing of ultra short wave communication Device-General receiver test system.
On the one hand, the present invention realizes the technical scheme that above-mentioned the first object adopts to be: ultra short wave communication Device-General receiver test system, comprise the receiver for testing, this test macro comprises the control panel connecting successively, control disposable plates, test board and Signal transfer box, described Signal transfer box is connected with described receiver, and also comprise the local frequency source for generation of described receiver mixing frequency, described local frequency source is connected with described receiver with described control disposable plates respectively, wherein, described control disposable plates is also connected with described Signal transfer box.
Further, described local frequency source comprises first vibration frequency and the second local frequency, described first, the second local frequency includes the phase demodulation frequency source connecting successively, phase-locked loop phase discriminator, voltage controlled oscillator, frequency dividing circuit, DDS processor and clock source, wherein, described clock source is connected with described phase demodulation frequency source, and also comprise the control circuit being connected with described DDS processor, described control circuit is connected with described control disposable plates with described phase demodulation frequency source, and the local frequency scope that described first vibration frequency produces is 960～1018MHz, the local frequency that described the second local frequency produces is 909.84MHz.
Further, described local frequency source also comprises active proportional-integral filter and low pass filter, described active proportional-integral filter is connected with described phase-locked loop phase discriminator, voltage controlled oscillator respectively, and described low pass filter is connected with clock source with described DDS processor respectively.
Further, described clock source is compensation crystal oscillator.
Further, described phase-locked loop phase discriminator adopts PFD structure, and its input nominal frequency is 12.288MHz.
On the other hand, the present invention realizes the technical scheme that above-mentioned the second object adopts to be: the method for testing of ultra short wave communication Device-General receiver test system of the present invention, comprises the steps:
S10, numerical control electrically tunable filter is set in described receiver on described control panel receives frequency;
S20, the frequency in described local frequency source is set on described control panel;
S30, described control disposable plates receive the FREQUENCY CONTROL information of described control panel, and are converted into the control letter of described receiver
Breath, and transfer to test board;
Just whether S40, the frequency of using standard instrument instrument detection local frequency source and the control information of described test board upper frequency
Really, if perform step S50, otherwise, return to step S10, step S20;
The performance index of S50, use standard instrument Meter Test receiver.
Further, described local frequency source comprises first vibration frequency and the second local frequency, the local frequency scope that described first vibration frequency produces is 960～1018MHz, the local frequency that described the second local frequency produces is 909.84MHz, the frequency step of described first, second local frequency is not more than 10KHz, amplitude+7dBm, be not more than-90dBc/Hz of phase noise@1KHz, be not more than-60dBc of spurious level, frequency switching time is not more than 70 μ s.
Further, described first vibration frequency receives the high 930MHz of frequency than numerical control electrically tunable filter in described receiver.
Compared with prior art, the invention has the advantages that: this test platform can provide local frequency source to receiver, produces control signal, realizes signal converting, the functions such as test interface are provided.This test platform strengthened receiver to the inhibition ability of image frequency and clutter, improved input dynamic range and machine sensitivity, met wireless communication system communicating distance, data transmission error rate and the requirement of speech communication intelligibility performance index.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the frame diagram of ultra short wave communication Device-General receiver test system of the present invention;
Fig. 2 is the frame diagram in the local frequency source of ultra short wave communication Device-General receiver test system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention are made to more explicit defining.
Consult shown in Fig. 1-2, ultra short wave communication Device-General receiver test system of the present invention, comprise the receiver (1) for testing, this test macro comprises control panel 2, control disposable plates 3, test board 4 and the Signal transfer box 5 connecting successively, Signal transfer box 5 is connected with receiver 1, and also comprise the local frequency source 6 for generation of receiver 1 mixing frequency, local frequency source 6 is connected with receiver 1 with control disposable plates 3 respectively, wherein, controlling disposable plates 3 is also connected with Signal transfer box 5.
Concrete, local frequency source 6 comprises first vibration frequency and the second local frequency, first vibration frequency and the second local frequency adopt synthesize+phase-locked loop of DDS+PLL(Direct Digital) and technology generation.First, second local frequency includes phase demodulation frequency source 7, phase-locked loop phase discriminator 8, voltage controlled oscillator 10, frequency dividing circuit 11, DDS processor 12 and the clock source 14 connecting successively, wherein, clock source 14 is for compensation crystal oscillator and be connected with phase demodulation frequency source 7, and phase-locked loop phase discriminator 8 input nominal frequencies are preferably 12.288MHz.And local frequency source 6 also comprises the control circuit 15 being connected with DDS processor 12, control circuit 15 is connected with control disposable plates 3 with phase demodulation frequency source 7, and the local frequency scope that first vibration frequency produces is preferably 960～1018MHz, the local frequency that the second local frequency produces is preferably 909.84MHz.Wherein, local frequency source 6 also comprises active proportional-integral filter 9 and low pass filter 13, active proportional-integral filter 9 is connected with phase-locked loop phase discriminator 8, voltage controlled oscillator 10 respectively, and low pass filter 13 is connected with clock source 14 with DDS processor 12 respectively.
In the present invention, the DDS processor 12 of first vibration frequency receives that through phase-locked loop, producing frequency range is the local frequency of (960～1018) MHz from controlling after 32 bit frequency control words of disposable plates 3.Change control panel 2 frequency control datas, can change the frequency that local frequency source 6 produces.The FPGA of disposable plates 3 is controlled in the control source of DDS processor 12, and interface mode adopts SPI interface, controls data for 32, and transmission rate reaches megahertz level, and frequency resolution and frequency switching rate are high.Phase-locked loop phase discriminator 8 adopts PFD structure, has larger frequency lock-in range.Owing to adopting composite type loop, the requirement to frequency when the parameters such as output frequency phase noise, far and near end are spuious, frequency switching time all meet system high-speed frequency hopping.The composition of the second local frequency is identical with first vibration frequency, and its DDS processor 12 frequency control words produce after control cabinet powers on normal work, produces frequency and fixes, unadjustable.
The method of testing of ultra short wave communication Device-General receiver test system of the present invention, comprises the steps:
S10, the interior numerical control electrically tunable filter of receiver 1 is set on control panel 2 receives frequency;
S20, the frequency in local frequency source 6 is set on control panel 2;
S30, control disposable plates 3 receive the FREQUENCY CONTROL information of control panels 2, and are converted into the control information of receiver 1, and transfer to test board 4;
S40, whether correct with frequency and the test board 4 upper frequency control informations in standard instrument instrument detection local frequency source 6, if perform step S50, otherwise, return to step S10, step S20;
The performance index of S50, use standard instrument Meter Test receiver 1.
In the present invention, standard instrument instrument comprises vector signal generator, and for detection of the spectrum analyzer of receiver performance, digital multimeter, four-way oscilloscope, VSA, power meter, vector network analyzer etc., wherein vector signal generator is for being the radiofrequency signal of (f0) MHz to receiver 1 injected frequency scope.Local frequency source 6 comprises first vibration frequency and the second local frequency, the local frequency scope that first vibration frequency produces is 960～1018MHz, the local frequency that the second local frequency produces is 909.84MHz, the frequency step of first, second local frequency is not more than 10KHz, amplitude+7dBm, be not more than-90dBc/Hz of phase noise@1KHz, be not more than-60dBc of spurious level, frequency switching time is not more than 70 μ s.
In the present invention, first the control data that numerical control electrically tunable filter receives frequency (f0) MHz are set on control panel 2, at control panel 2 keyboards, key in corresponding frequency numeral, the numeral that display screen display keyboard is keyed in, it is complete that numerical control electrically tunable filter receives frequency point setting; Then local frequency source 6 is set on control panel 2, is wherein mainly set to the control data of first vibration frequency (f0+930) MHz in local frequency source 6, the second local frequency is definite value, unadjustable.At control panel 2 keyboards, key in corresponding frequency numeral, the numeral that display screen display keyboard is keyed in, setting completed for local frequency source frequency.Control disposable plates 3 receives after the control information of control panel 2 inputs, convert the control information of receiver 1 to, through cable transmission to test board 4, whether accurate with standard instrument test respective frequencies source frequency and output control information, after confirming that the working properly and control information of frequency source is errorless, can open the radiofrequency signal that vector signal generator is (f0) MHz to receiver injected frequency scope, finally use standard instrument Meter Test receiver performance index.
Above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any variation of expecting without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range that claims were limited.
Claims (8)
1. a ultra short wave communication Device-General receiver test system, comprise the receiver (1) for testing, it is characterized in that: this test macro comprises the control panel (2) connecting successively, control disposable plates (3), test board (4) and Signal transfer box (5), described Signal transfer box (5) is connected with described receiver (1), and also comprise the local frequency source (6) for generation of described receiver (1) mixing frequency, described local frequency source (6) is connected with described receiver (1) with described control disposable plates (3) respectively, wherein, described control disposable plates (3) is also connected with described Signal transfer box (5).
2. ultra short wave communication Device-General receiver test system according to claim 1, it is characterized in that: described local frequency source (6) comprises first vibration frequency and the second local frequency, described first, the second local frequency includes the phase demodulation frequency source (7) connecting successively, phase-locked loop phase discriminator (8), voltage controlled oscillator (10), frequency dividing circuit (11), DDS processor (12) and clock source (14), wherein, described clock source (14) is connected with described phase demodulation frequency source (7), and also comprise the control circuit (15) being connected with described DDS processor (12), described control circuit (15) is connected with described control disposable plates (3) with described phase demodulation frequency source (7), and the local frequency scope that described first vibration frequency produces is 960～1018MHz, the local frequency that described the second local frequency produces is 909.84MHz.
3. ultra short wave communication Device-General receiver test system according to claim 2, it is characterized in that: described local frequency source (6) also comprises active proportional-integral filter (9) and low pass filter (13), described active proportional-integral filter (9) is connected with described phase-locked loop phase discriminator (8), voltage controlled oscillator (10) respectively, and described low pass filter (13) is connected with clock source (14) with described DDS processor (12) respectively.
4. ultra short wave communication Device-General receiver test system according to claim 2, is characterized in that: described clock source (14) is compensation crystal oscillator.
5. ultra short wave communication Device-General receiver test system according to claim 4, is characterized in that: described phase-locked loop phase discriminator (8) adopts PFD structure, and its input nominal frequency is 12.288MHz.
6. a method of testing for ultra short wave communication Device-General receiver test system according to claim 1, is characterized in that: comprise the steps:
S10, numerical control electrically tunable filter is set in described receiver (1) on described control panel (2) receives frequency;
S20, the frequency in described local frequency source (6) is set on described control panel (2);
S30, described control disposable plates (3) receive the FREQUENCY CONTROL information of described control panel (2), and are converted into the control information of described receiver (1), and transfer to test board (4);
S40, whether correct with frequency and described test board (4) the upper frequency control information in standard instrument instrument detection local frequency source (6), if perform step S50, otherwise, return to step S10, step S20;
The performance index of S50, use standard instrument Meter Test receiver (1).
7. the method for testing of ultra short wave communication Device-General receiver test system according to claim 6, it is characterized in that: described local frequency source (6) comprises first vibration frequency and the second local frequency, the local frequency scope that described first vibration frequency produces is 960～1018MHz, the local frequency that described the second local frequency produces is 909.84MHz, described first, the frequency step of the second local frequency is not more than 10KHz, amplitude+7dBm, be not more than-90dBc/Hz of phase noise@1KHz, be not more than-60dBc of spurious level, frequency switching time is not more than 70 μ s.
8. the method for testing of ultra short wave communication Device-General receiver test system according to claim 7, is characterized in that: described first vibration frequency receives the high 930MHz of frequency than numerical control electrically tunable filter in described receiver.
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| CN104391187A (en) * | 2014-09-18 | 2015-03-04 | 中国人民解放军63892部队 | Alignment calibration device and alignment calibration method of multi-frequency-point antenna array |
| CN112666504A (en) * | 2020-12-01 | 2021-04-16 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Portable detection equipment of digital instantaneous frequency measurement receiver |
| CN113259021A (en) * | 2021-04-30 | 2021-08-13 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Automatic receiving and dispatching testing device for portable aviation radio station |
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| CN112666504A (en) * | 2020-12-01 | 2021-04-16 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Portable detection equipment of digital instantaneous frequency measurement receiver |
| CN113259021A (en) * | 2021-04-30 | 2021-08-13 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Automatic receiving and dispatching testing device for portable aviation radio station |
| CN113259021B (en) * | 2021-04-30 | 2023-06-02 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Portable automatic receiving and transmitting testing device for aviation radio station |
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| CN103957063B (en) | 2016-03-09 |
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