CN103051396A - Test method of deep-space high-stability beacon - Google Patents
Test method of deep-space high-stability beacon Download PDFInfo
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- CN103051396A CN103051396A CN2012105328032A CN201210532803A CN103051396A CN 103051396 A CN103051396 A CN 103051396A CN 2012105328032 A CN2012105328032 A CN 2012105328032A CN 201210532803 A CN201210532803 A CN 201210532803A CN 103051396 A CN103051396 A CN 103051396A
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Abstract
The invention provides a test method of characteristics of a deep-space high-stability beacon. The method comprises the following steps of: building a deep-space high-stability beacon test system in accordance with claim 1; allowing an atomic clock of ground test equipment to be in a steady work state; carrying out the power-on self-test on a measured device, and adjusting a signal power in a radio frequency link to meet input requirements; connecting the tested device and a test device; detecting by spectrum analyzer carriers; starting a high-stability frequency source to preheat for half an hour, and recording the stability of the beacon by a frequency meter; and measuring the frequency stability and the frequency variation at different temperatures in the beacon test work by changing the external environment of the test device. According to the test method provided by the invention, a deep space environment (i.e., in a long-time flight process and high-low temperature change process) is simulated, so that the frequency change characteristics of the high-stability and high-precision beacon are measured. The test method can be applied to the performance test of a deep space detector VLBI (very long baseline interferometry) beacon, and can also be applied to a high-stability frequency performance test experiment with similar situations.
Description
Technical field
The present invention relates to the survey of deep space field, particularly a kind of method of testing that is applicable to deep space high stable beacon.
Background technology
Ground station produces beacon signal to the high steady frequency source that the mensuration rail of deep space probe depends on detector, and the quality of this beacon is to finish one of important guarantee that ground station measures rail work.By measuring the beacon signal of deep space probe, determine position, speed and the track of detector.The detector beacon signal is produced by the high steady frequency source in the detector, through launching after the transmitter frequency multiplication, so the stability of the beacon signal of detector and precision directly affect the precision of detector orbit determination.Produce the test of high stability beacon signal by high steady frequency source and the transmitter to deep space probe on the ground, find out the characteristic of beacon signal, provide the engineering of detector is followed the tracks of the rail supported (comprising engineering orbit determination and precise orbit determination) of surveying rail and one way Doppler measurement.
Summary of the invention
The present invention proposes a kind of method of testing of high stability beacon, and the test macro that the method relies on general purpose test equipment to build detects the time-varying characteristics of high stable beacon and becomes characteristic with the temperature of external environment, and frequency measurement accuracy can reach 10
-14Quantity.This ground testing system mainly is comprised of temperature control box, frequency spectrograph, frequency meter and rubidium atomic clock etc.
According to an aspect of the present invention, a kind of deep space high stable beacon test macro is provided, comprise part and ground checkout equipment on the detector star that is connected, wherein, described detector star top is divided and is comprised high steady frequency source, the number transmission transmitter, high low temperature temperature control box, ground detects examination equipment, described ground checkout equipment comprises attenuator, power splitter, frequency spectrograph, frequency meter, computer, atomic clock, GPS, be provided with the high steady frequency source and the number transmission transmitter that are connected in the described high low temperature temperature control box, detect the examination equipment connection to described high low temperature temperature control box describedly, described several transmission transmitter is connected to described attenuator by radio frequency cable, described attenuator, power splitter, frequency spectrograph connects successively, described power splitter is connected to described frequency meter, described GPS, atomic clock, frequency meter connects successively, and described frequency meter is connected to described computer.
Preferably, described atomic clock is rubidium atomic clock.
According to another aspect of the present invention, provide a kind of deep space high stable beacon method of testing, comprise the steps:
Step 1: build deep space high stable beacon test macro claimed in claim 1;
Step 2: make the atomic clock of ground checkout equipment be in steady-working state;
Step 3: the equipment under test startup self-detection, signal power reaches input requirements in the adjustment radio frequency link; Equipment under test is connected with testing equipment;
Step 4: detect by the frequency spectrograph carrier wave;
Step 5: high steady Opening Frequency Source elder generation preheating half an hour, by frequency meter the stability of beacon is carried out record;
Step 6: by changing the external environment of tested equipment, the test beacon is operated under the different temperatures, the Changing Pattern of measuring frequency stability and frequency.
Preferably, described step 1 comprises step: the start in 24 hours in advance of the atomic clock in the ground checkout equipment, and add gps signal and tame, make it be in steady-working state.
Preferably, described step 3 comprises the steps:
Step 301: number transmission transmitter and ground checkout equipment are realized wired connection by radio frequency cable, and radio frequency cable are carried out attenuation demarcate;
Step 302: the attenuation of adjusting attenuator makes it reach the input requirements of frequency meter at the incoming end power of power splitter without the modulation single carrier signal power;
Step 303: by electronic load whole deep space high stable beacon test macro power supply unit is detected, after all are normal, change high steady frequency source and the work of number transmission transmitter unit;
Step 304: high steady frequency source, number transmission transmitter are connected with ground checkout equipment, carry out self check.
Preferably, described step 4 comprises step: pass modulated carrier, detect without modulated carrier without modulated carrier, three frequencies without modulation single carrier, dual-frequency point by the frequency spectrograph logarithm.
Preferably, described step 5 comprises step: first preheating half an hour behind the high steady Opening Frequency Source, the start of number transmission transmitters.By frequency meter the stability of beacon is carried out record.
Preferably, described step 6 comprises step: by changing the external environment of tested equipment, the test beacon is operated under the different temperatures, the Changing Pattern of measuring frequency stability and frequency, simultaneously the temperature of transmitter in the test process is carried out record, prevent the excess Temperature of transmitter.
Deep space high stable beacon generation equipment is placed in the temperature control box, simulate the variation (50 °～+ 50 °) of temperature environment in the actual deep space probe flight course.Frequency meter adopts outside atomic clock reference source, and the stability of measuring-signal and accuracy are suitable with the atomic clock magnitude, for example the frequency stability 10 of rubidium atomic clock
-14Magnitude can be measured beacon stability 10
-14Magnitude.The frequency range of measuring beacon is the count range of frequency meter, for example the frequency meter of Agilent company (53149A) the frequency range 50MHz that can measure～46GHz.
The present invention adopts above method, has built high frequency stabilization rate measuring table, can satisfy the measurement requirement of deep space probe high stable beacon fully.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is deep space high stable beacon test macro basic hardware pie graph of the present invention;
Fig. 2 is deep space high stable beacon test schematic diagram of the present invention.
Embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.Following examples will help those skilled in the art further to understand the present invention, but not limit in any form the present invention.Should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
Be deep space high stable beacon test macro basic hardware pie graph with reference to figure 1.Described deep space high stable beacon test macro mainly is comprised of two parts, part and ground checkout equipment on the detector star: part mainly is comprised of the steady frequency source of height, number transmission transmitter and ground detection examination equipment etc. on the detector star; Ground detects examination equipment and mainly is comprised of attenuator, power splitter, frequency spectrograph, frequency meter, computer, rubidium (Rb) atomic clock and GPS etc.Be provided with the high steady frequency source and the number transmission transmitter that are connected in the described high low temperature temperature control box, detect the examination equipment connection to described high low temperature temperature control box describedly, described several transmission transmitter is connected to described attenuator by radio frequency cable, described attenuator, power splitter, frequency spectrograph connect successively, described power splitter is connected to described frequency meter, described GPS, atomic clock, frequency meter connect successively, and described frequency meter is connected to described computer.High steady frequency source is made of two high stability crystal oscillators, and ground checkout equipment mainly is made of computer, interconnecting device and DC power supply.Wherein high steady frequency source is placed in the high low temperature temperature control box with the number transmission transmitter and isolates with space outerpace, part such as the empty frame of Fig. 1 inside, namely can carry out temperature control and can prevent that again radiofrequency signal from arriving receiving terminal by Space Coupling, affects the stability of input signal test.
Below in conjunction with system's pie graph deep space high stable beacon method of testing is described further.
In one embodiment, according to deep space high stable beacon method of testing provided by the invention, comprise the steps:
Step 1: build deep space high stable beacon test macro claimed in claim 1;
Step 2: make the atomic clock of ground checkout equipment be in steady-working state;
Step 3: the equipment under test startup self-detection, signal power reaches input requirements in the adjustment radio frequency link; Equipment under test is connected with testing equipment;
Step 4: detect by the frequency spectrograph carrier wave;
Step 5: high steady Opening Frequency Source elder generation preheating half an hour, by frequency meter the stability of beacon is carried out record;
Step 6: by changing the external environment of tested equipment, the test beacon is operated under the different temperatures, the Changing Pattern of measuring frequency stability and frequency.
Further, in a preference of above-described embodiment, described deep space high stable beacon method of testing comprises the steps:
Step 1, rubidium atomic clock in the ground checkout equipment require start in 24 hours in advance, and add gps signal and tame, and make it be in steady-working state.
Step 2, number transmission transmitter and ground checkout equipment are realized wired connection as shown in Figure 1, and radio frequency cable are carried out attenuation demarcate.
Step 3, the attenuation of adjusting attenuator makes it reach the input requirements of frequency meter at the incoming end power of power splitter without the modulation single carrier signal power.
Step 4 detects the whole system power supply unit by electronic load, after all are normal, changes high steady frequency source and the work of number transmission transmitter unit, carries out following test.
Step 5, high steady frequency source, number transmission transmitter are connected with ground checkout equipment, carry out self check.
Step 6 passes modulated carrier, detects without modulated carrier without modulated carrier, three frequencies without modulation single carrier, dual-frequency point by the frequency spectrograph logarithm.
Step 7, first preheating half an hour behind the high steady Opening Frequency Source, the start of number transmission transmitters.By frequency meter the stability of beacon is carried out record.
Step 8 by changing the external environment of tested equipment, is operated under the different temperatures test beacon, and the Changing Pattern of measuring frequency stability and frequency carries out record to the temperature of transmitter in the test process, prevents the excess Temperature of transmitter.
More than specific embodiments of the invention are described.It will be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (8)
1. deep space high stable beacon test macro, it is characterized in that, comprise part and ground checkout equipment on the detector star that is connected, wherein, described detector star top is divided and is comprised high steady frequency source, the number transmission transmitter, high low temperature temperature control box, ground detects examination equipment, described ground checkout equipment comprises attenuator, power splitter, frequency spectrograph, frequency meter, computer, atomic clock, GPS, be provided with the high steady frequency source and the number transmission transmitter that are connected in the described high low temperature temperature control box, detect the examination equipment connection to described high low temperature temperature control box describedly, described several transmission transmitter is connected to described attenuator by radio frequency cable, described attenuator, power splitter, frequency spectrograph connects successively, described power splitter is connected to described frequency meter, described GPS, atomic clock, frequency meter connects successively, and described frequency meter is connected to described computer.
2. deep space high stable beacon test macro according to claim 1 is characterized in that described atomic clock is rubidium atomic clock.
3. a deep space high stable beacon method of testing is characterized in that, comprises the steps:
Step 1: build deep space high stable beacon test macro claimed in claim 1;
Step 2: make the atomic clock of ground checkout equipment be in steady-working state;
Step 3: the equipment under test startup self-detection, signal power reaches input requirements in the adjustment radio frequency link; Equipment under test is connected with testing equipment;
Step 4: detect by the frequency spectrograph carrier wave;
Step 5: high steady Opening Frequency Source elder generation preheating half an hour, by frequency meter the stability of beacon is carried out record;
Step 6: by changing the external environment of tested equipment, the test beacon is operated under the different temperatures, the Changing Pattern of measuring frequency stability and frequency.
4. deep space high stable beacon method of testing according to claim 3 is characterized in that described step 1 comprises step: the start in 24 hours in advance of the atomic clock in the ground checkout equipment, and add gps signal and tame, make it be in steady-working state.
5. deep space high stable beacon method of testing according to claim 3 is characterized in that described step 3 comprises the steps:
Step 301: number transmission transmitter and ground checkout equipment are realized wired connection by radio frequency cable, and radio frequency cable are carried out attenuation demarcate;
Step 302: the attenuation of adjusting attenuator makes it reach the input requirements of frequency meter at the incoming end power of power splitter without the modulation single carrier signal power;
Step 303: by electronic load whole deep space high stable beacon test macro power supply unit is detected, after all are normal, change high steady frequency source and the work of number transmission transmitter unit;
Step 304: high steady frequency source, number transmission transmitter are connected with ground checkout equipment, carry out self check.
6. deep space high stable beacon method of testing according to claim 3 is characterized in that described step 4 comprises step: pass modulated carrier, detect without modulated carrier without modulated carrier, three frequencies without modulation single carrier, dual-frequency point by the frequency spectrograph logarithm.
7. deep space high stable beacon method of testing according to claim 3 is characterized in that described step 5 comprises step: first preheating half an hour behind the high steady Opening Frequency Source, the start of number transmission transmitters.By frequency meter the stability of beacon is carried out record.
8. deep space high stable beacon method of testing according to claim 3, it is characterized in that, described step 6 comprises step: by changing the external environment of tested equipment, the test beacon is operated under the different temperatures, the Changing Pattern of measuring frequency stability and frequency, simultaneously the temperature of transmitter in the test process is carried out record, prevent the excess Temperature of transmitter.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061767A (en) * | 2018-06-28 | 2018-12-21 | 上海卫星工程研究所 | Deep space exploration high sensitivity testing system and test method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520262A (en) * | 2011-11-15 | 2012-06-27 | 上海卫星工程研究所 | Device and method for testing radio-frequency waveguide of deep space aircraft |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520262A (en) * | 2011-11-15 | 2012-06-27 | 上海卫星工程研究所 | Device and method for testing radio-frequency waveguide of deep space aircraft |
Non-Patent Citations (1)
| Title |
|---|
| 李金岳等: "深空VLBI信标测试技术", 《中国宇航学会深空探测技术专业委员会第七届学术年会论文集》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061767A (en) * | 2018-06-28 | 2018-12-21 | 上海卫星工程研究所 | Deep space exploration high sensitivity testing system and test method |
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Application publication date: 20130417 |