CN203178492U - Reinforced military code direct-capture algorithm module - Google Patents
Reinforced military code direct-capture algorithm module Download PDFInfo
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- CN203178492U CN203178492U CN 201320195627 CN201320195627U CN203178492U CN 203178492 U CN203178492 U CN 203178492U CN 201320195627 CN201320195627 CN 201320195627 CN 201320195627 U CN201320195627 U CN 201320195627U CN 203178492 U CN203178492 U CN 203178492U
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Abstract
The utility model discloses a reinforced military code direct-capture algorithm module, comprising a filter, a converter, a DSP microprocessor and a voltage converter. The filter comprises an anti-aliasing filter and a smoothing filter. The converter comprises an A/D converter and a D/A converter. The anti-aliasing filter is connected with the A/D converter. The A/D converter is connected with the DSP microprocessor. The DSP microprocessor is connected with the voltage converter and the D/A converter respectively. The D/A converter is connected with the smoothing filter. The voltage converter is also connected with the anti-aliasing filter and the smoothing filter. The reinforced military code direct-capture algorithm module is available for interface signals, can be deeply assembled and matched with a satellite navigation receiver conveniently in the existing market and is convenient and flexible in use. The reinforced military code direct-capture algorithm module realizes signal processing on different satellites by adjusting band-pass frequency points of the anti-aliasing filter and the smoothing filter. If a bus interface mode is used in operation, signal processing on a satellite can be realized without adjusting hardware.
Description
Technical field
The utility model relates to a kind of reinforced army sign indicating number and directly catches algoritic module.
Background technology
At present on the home market specific satellite navigation receiving terminal when fine positioning fast adopt army's sign indicating number directly the mode of catching carry out tracking signal, and resolve.But it is to want normally to receive signal that common army sign indicating number is directly caught the use prerequisite of algorithm, after signal is blocked by high mountain, dark woods or skyscraper or absorbs, signal may be attenuated nearly 20dB, after being used for military long code signal attenuation, signal to noise ratio (S/N ratio) is very low, in this case, then need long detection integral time in order to catch faint signal, after having prolonged integral time, cause the Doppler effect influence to strengthen, at this moment, common army sign indicating number is directly caught algorithm and can not well efficiently be followed the tracks of, particularly under high dynamic environment, tracking results will be unavailable substantially.
The utility model content
For overcoming above-mentioned deficiency, the utility model purpose provides a kind of defective that common army sign indicating number on the market is directly caught algorithm that remedies, and improves the reinforced army sign indicating number that catches sensitivity and antijamming capability and directly catches algoritic module.
Scheme of the present utility model is as follows: a kind of reinforced army sign indicating number is directly caught algoritic module, comprise wave filter, converter, the DSP microprocessor, electric pressure converter, described wave filter comprises frequency overlapped-resistable filter and smoothing filter, described converter comprises A/D converter and D/A converter, described frequency overlapped-resistable filter is connected with A/D converter, described A/D converter is connected with the DSP microprocessor, described DSP microprocessor also respectively with electric pressure converter, D/A converter connects, described D/A converter is connected with smoothing filter, described electric pressure converter also with frequency overlapped-resistable filter, smoothing filter connects.
The externally fed voltage range of described electric pressure converter is 7.8V-27V.
Described converter is high speed 16 bit parallel converters.
Described DSP microprocessor is provided with bus interface.
The beneficial effects of the utility model:
1, this module interface signal is general, can be easily with the existing market on the satellite navigation receiver degree of depth integrated supporting, flexible and convenient to use.This module by signal rich interface, both can pass through the simulating signal IO interface, the simple functions of satellite navigation receiver stack on realization and the existing market also can be integrated supporting, flexible and convenient to use by the satellite navigation receiver degree of depth on bus interface realization and the existing market.
But 2 processing signals type variations.By the logical frequency of band of adjusting frequency overlapped-resistable filter and smoothing filter, can realize the signal of GPS, the Big Dipper, GLONASS satellite is handled; As use bus interface modes to carry out work, then do not need hardware adjustment just can realize the signal of GPS, the Big Dipper, GLONASS satellite is handled.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
A kind of reinforced army sign indicating number is directly caught algoritic module, comprise wave filter, converter, DSP microprocessor 1, electric pressure converter 2, described wave filter comprises frequency overlapped-resistable filter 3 and smoothing filter 4, described converter comprises A/D converter 5 and D/A converter 6, described frequency overlapped-resistable filter 3 is connected with A/D converter 5, described A/D converter 5 is connected with DSP microprocessor 1, described DSP microprocessor 1 also respectively with electric pressure converter, D/A converter connects 6, described D/A changes 6 devices and is connected with smoothing filter 4, described electric pressure converter 2 also with frequency overlapped-resistable filter 3, smoothing filter 4 connects.
The externally fed voltage range of described electric pressure converter 2 is 7.8V-27V; Described converter is high speed 16 bit parallel converters; Described DSP microprocessor is provided with bus interface.
The utility model is when implementing, and the frequency overlapped-resistable filter 3 input simulating signal of self-feed line in the future carries out filtering, and the out-of-band noise signal in filtering place realizes one-level filtering; Filtered signal realizes that by high speed 16 bit parallel A/D converters 5 simulating signal is to the conversion of digital signal; DSP microprocessor 1 is finished army's sign indicating number of Doppler effect correction and is directly caught computing, and data signal source both can also can come from bus interface from A/D converter 5; The output of data-signal both can have been delivered to the output of D/A6 converter, also can deliver to bus interface output, had other processing unit to be further processed again.The digital signal of delivering to the D/A6 converter is converted into simulating signal, by smoothing filter 4 output signal is carried out filtering then, and the out-of-band noise signal in filtering place realizes output filtering, and output signal directly enters and mends receiver or common receiver slowly.
Although above embodiment of the present utility model has been given to describe in detail and explanation; but what should indicate is; we can carry out various equivalences to above-mentioned embodiment according to conception of the present utility model and change and modification; when its function that produces does not exceed spiritual that instructions and accompanying drawing contain yet, all should be within protection domain of the present utility model.
Claims (4)
1. a reinforced army sign indicating number is directly caught algoritic module, it is characterized in that comprising wave filter, converter, the DSP microprocessor, electric pressure converter, described wave filter comprises frequency overlapped-resistable filter and smoothing filter, described converter comprises A/D converter and D/A converter, described frequency overlapped-resistable filter is connected with A/D converter, described A/D converter is connected with the DSP microprocessor, described DSP microprocessor also respectively with electric pressure converter, D/A converter connects, described D/A converter is connected with smoothing filter, described electric pressure converter also with frequency overlapped-resistable filter, smoothing filter connects.
2. directly catch algoritic module according to the described a kind of reinforced army of claim 1 sign indicating number, the externally fed voltage range that it is characterized in that described electric pressure converter is 7.8V-27V.
3. directly catch algoritic module according to the described a kind of reinforced army of claim 1 sign indicating number, it is characterized in that described converter is high speed 16 bit parallel converters.
4. directly catch algoritic module according to the described a kind of reinforced army of claim 1 sign indicating number, it is characterized in that described DSP microprocessor is provided with bus interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320195627 CN203178492U (en) | 2013-04-18 | 2013-04-18 | Reinforced military code direct-capture algorithm module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320195627 CN203178492U (en) | 2013-04-18 | 2013-04-18 | Reinforced military code direct-capture algorithm module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203178492U true CN203178492U (en) | 2013-09-04 |
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ID=49075170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320195627 Expired - Fee Related CN203178492U (en) | 2013-04-18 | 2013-04-18 | Reinforced military code direct-capture algorithm module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203178492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109683513A (en) * | 2018-12-11 | 2019-04-26 | 天津津航计算技术研究所 | 100,000,000 1553B of one kind hair control simulated-bus front end |
-
2013
- 2013-04-18 CN CN 201320195627 patent/CN203178492U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109683513A (en) * | 2018-12-11 | 2019-04-26 | 天津津航计算技术研究所 | 100,000,000 1553B of one kind hair control simulated-bus front end |
| CN109683513B (en) * | 2018-12-11 | 2020-02-14 | 天津津航计算技术研究所 | Hundred-million 1553B launch control bus analog front end |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20170418 |