CN103439706A - Single-channel time division radar transceiver system - Google Patents
Single-channel time division radar transceiver system Download PDFInfo
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- CN103439706A CN103439706A CN2013103466916A CN201310346691A CN103439706A CN 103439706 A CN103439706 A CN 103439706A CN 2013103466916 A CN2013103466916 A CN 2013103466916A CN 201310346691 A CN201310346691 A CN 201310346691A CN 103439706 A CN103439706 A CN 103439706A
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Abstract
The invention discloses a single-channel time division radar transceiver system comprising a radio frequency signal generation part, a first radio frequency switch, a second radio frequency switch and a single-channel radio frequency receiving and intermediate frequency processing part. The radio frequency signal generation part comprises an emission local oscillator, a first band-pass filter, an attenuator and a power amplifier, wherein the emission local oscillator, the first band-pass filter, the attenuator and the power amplifier are sequentially connected. The single-channel radio frequency receiving and intermediate frequency processing part comprises a second band-pass filter, a preamplifier, a mixer, a third band-pass filter and an intermediate frequency collecting and digital processing module, wherein the second band-pass filter, the preamplifier, the mixer, the third band-pass filter and the intermediate frequency collecting and digital processing module are sequentially connected, the mixer is further connected with a receiving local oscillator. The signal output end of the radio frequency signal generation part outputs a reference signal and a radio frequency output signal, wherein the reference signal and the radio frequency output signal have access to the first radio frequency switch and the second radio frequency switch respectively. The signal output end of the single-channel radio frequency receiving and intermediate frequency processing part has access to the reference signal and an echo signal respectively through the first radio frequency switch and the second radio frequency switch. According to the system, the design difficulty of a radar system is reduced, hardware design is simplified, and cost is reduced.
Description
Technical field
The present invention relates to the radar transmit-receive system, be specifically related to a kind of single channel time-division radar transmit-receive system.
Background technology
In current radar transmit-receive Test Application, generally adopt the binary channels mode to realize the parameter testings such as the amplitude of reference and echoed signal and phase place simultaneously, thereby can realize the Measurement and analysis to target object.General purpose radar receive-transmit system theory diagram as shown in Figure 1.
The radar transmit-receive system is general main to be comprised of emission and dual channel receiver two parts, and transmitter is launched radiofrequency signal from radio frequency output port, after running into target object, the signal reflex tieback is received to passage; Receiving unit, except the echo receiving cable, generally also comprises local with reference to receiving cable; Radar system is processed local reference and echoed signal simultaneously simultaneously, can calculate the physical characteristics parameters such as distance of measured target by the parameters such as frequency, amplitude and phase place of calculating two passages.
Summary of the invention
The purpose of this invention is to provide a kind of single channel time-division radar transmit-receive system, utilize the single channel time division way to realize the reception & disposal of the local reference of radar and echoed signal, thereby can reach the design of simplifying Radar Receiver System the purpose that reduces hardware cost.
Technical scheme of the present invention is as follows:
Single channel time-division radar transmit-receive system, include radiofrequency signal part, radio-frequency (RF) switch one, radio-frequency (RF) switch two, single channel radio frequency reception and intermediate frequency process part occur, it is characterized in that: described radiofrequency signal generating unit is divided emission local oscillator, bandpass filter one, attenuator, the power amplifier that includes connection successively, single channel radio frequency reception and intermediate frequency process partly include bandpass filter two, prime amplifier, frequency mixer, bandpass filter three, intermediate frequency collection and the digital signal processing module connected successively, also have access to the reception local oscillator on frequency mixer; Signal output part output reference signal and the radio frequency output signal of part occurs in radiofrequency signal, reference signal and radio frequency output signal access respectively radio-frequency (RF) switch one, radio-frequency (RF) switch two, and the signal input part of single channel radio frequency reception and intermediate frequency process part is respectively by radio-frequency (RF) switch one, radio-frequency (RF) switch two incoming reference signals and echoed signal.
Described single channel time-division radar transmit-receive system, it is characterized in that: part occurs and exports local reference and radio frequency output signal in described radiofrequency signal, adopt time-sharing format to control radio-frequency (RF) switch one, two, when local reference signal is launched and be received, radio-frequency (RF) switch one is for opening state, radio-frequency (RF) switch two for off status, when the emission of radio frequency output signal and echoed signal when received radio-frequency (RF) switch one for off status, radio-frequency (RF) switch two for opening state; Thereby radio frequency reception channel can timesharing receive with reference to and the echoed signal line number word processing of going forward side by side.
The radiofrequency signal generating unit is divided into radar system to be provided and transmits; " radio-frequency (RF) switch one " controlled local reference signal and " opened " or " pass "; " radio-frequency (RF) switch two " controlled the radio frequency output signal and " opened " or " pass "; The local reference of single channel radio frequency reception and intermediate frequency process timesharing reception & disposal and echoed signal.
Intermediate frequency collection and digital signal processing module obtain the information such as frequency, amplitude and phase place of local reference and echoed signal by time-division processing, the physical characteristics test of realize target object.
the invention has the beneficial effects as follows:
(1) key distinction of general purpose radar receive-transmit system described in the present invention and Fig. 1 is to use single channel to realize the reception & disposal of reference and echoed signal at receiving unit;
(2) in the output of radiating portion reference and radio frequency, adopt time-sharing format to control radio-frequency (RF) switch, thus make radio frequency reception channel can timesharing receive with reference to and echoed signal processed;
(3) radio frequency reception and intermediate frequency process part obtain the information such as frequency, amplitude and phase place of reference and echo by time-division processing;
(4) the present invention is directed to that the general purpose radar receive-transmit system is used binary channels to receive to test and receiving cable designs complicated characteristics; Utilize the single channel time division way to realize the reception & disposal of the local reference of radar and echoed signal, thereby can reach the purpose of simplifying the Radar Receiver System design, simplify hardware design and reduce costs.
The accompanying drawing explanation
Fig. 1 is general purpose radar receive-transmit system theory diagram.
Fig. 2 is single channel time-division radar transmit-receive system principle diagram of the present invention.
Fig. 3 is the radar transmit-receive system emission of single channel time-division and reception & disposal sequential chart.
Embodiment
Referring to Fig. 2, single channel time-division radar transmit-receive system, include radiofrequency signal generation part 1, radio-frequency (RF) switch 3, radio-frequency (RF) switch 4, single channel radio frequency reception and intermediate frequency process part 2, radiofrequency signal generation part 1 includes emission local oscillator 5, bandpass filter 6, attenuator 7, the power amplifier 8 connected successively, single channel radio frequency reception and intermediate frequency process part 2 include bandpass filter 9, prime amplifier 10, frequency mixer 11, bandpass filter 12, intermediate frequency collection and the digital signal processing module 13 connected successively, also have access on frequency mixer 11 and receive local oscillator 14; Signal output part output reference signal and the radio frequency output signal of radiofrequency signal generation part 1, reference signal and radio frequency output signal access respectively radio-frequency (RF) switch 3, radio-frequency (RF) switch 4, and the signal input part of single channel radio frequency reception and intermediate frequency process part 2 is respectively by radio-frequency (RF) switch 3, radio-frequency (RF) switch 4 incoming reference signals and echoed signal.
The radiofrequency signal generation part 1 local reference of output and radio frequency output signal, adopt time-sharing format to control radio-frequency (RF) switch 3,4, when local reference signal is launched and be received, radio-frequency (RF) switch 3 is for opening state, radio-frequency (RF) switch 4 for off status, when the emission of radio frequency output signal and echoed signal when received radio-frequency (RF) switch 3 for off status, radio-frequency (RF) switch 4 for opening state; Thereby radio frequency reception channel can timesharing receive with reference to and the echoed signal line number word processing of going forward side by side.
Fig. 3 has provided the radar transmit-receive system emission of single channel time-division and has received sequential chart, emission and the echo reception & disposal of the transmitting and receiving of local reference signal, radiofrequency signal are identical on sequential, and difference is that the control of " radio-frequency (RF) switch one " and " radio-frequency (RF) switch two " break-make is just in time contrary; When local reference signal is launched and be received, " radio-frequency (RF) switch one " is that "On" state, " radio-frequency (RF) switch two " are "Off" state, when the emission of radio frequency output signal and echo when received " radio-frequency (RF) switch one " be that "Off" state, " radio-frequency (RF) switch two " they are "On" state; Single pass like this timesharing is used radar system can obtain the measurement result of Two-channels radar system.
Claims (2)
1. single channel time-division radar transmit-receive system, include radiofrequency signal part, radio-frequency (RF) switch one, radio-frequency (RF) switch two, single channel radio frequency reception and intermediate frequency process part occur, it is characterized in that: described radiofrequency signal generating unit is divided emission local oscillator, bandpass filter one, attenuator, the power amplifier that includes connection successively, single channel radio frequency reception and intermediate frequency process partly include bandpass filter two, prime amplifier, frequency mixer, bandpass filter three, intermediate frequency collection and the digital signal processing module connected successively, also have access to the reception local oscillator on frequency mixer; Signal output part output reference signal and the radio frequency output signal of part occurs in radiofrequency signal, reference signal and radio frequency output signal access respectively radio-frequency (RF) switch one, radio-frequency (RF) switch two, and the signal input part of single channel radio frequency reception and intermediate frequency process part is respectively by radio-frequency (RF) switch one, radio-frequency (RF) switch two incoming reference signals and echoed signal.
2. single channel time-division radar transmit-receive system according to claim 1, it is characterized in that: part occurs and exports local reference and radio frequency output signal in described radiofrequency signal, adopt time-sharing format to control radio-frequency (RF) switch one, two, when local reference signal is launched and be received, radio-frequency (RF) switch one is for opening state, radio-frequency (RF) switch two for off status, when the emission of radio frequency output signal and echoed signal when received radio-frequency (RF) switch one for off status, radio-frequency (RF) switch two for opening state; Thereby radio frequency reception channel can timesharing receive with reference to and the echoed signal line number word processing of going forward side by side.
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| CN2013103466916A CN103439706A (en) | 2013-08-09 | 2013-08-09 | Single-channel time division radar transceiver system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181521A (en) * | 2014-06-24 | 2014-12-03 | 合肥工业大学 | High range resolution radar capable of emitting multifrequency carrier wave |
| CN106291479A (en) * | 2016-08-02 | 2017-01-04 | 电子科技大学 | A kind of borehole radar step frequency controllable gain receiver front end |
| CN109782284A (en) * | 2019-03-15 | 2019-05-21 | 中国科学院电子学研究所 | A method of the synchronous interference SAR of Long baselines is realized based on pulse code |
| CN112630779A (en) * | 2020-12-03 | 2021-04-09 | 中国人民解放军空军工程大学 | Software MIMO three-dimensional imaging radar system |
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| EP1326086A1 (en) * | 2000-10-12 | 2003-07-09 | Fujitsu Ten Limited | One-antenna time-division control fm-cw radar |
| CN1752771A (en) * | 2005-10-20 | 2006-03-29 | 武汉大学 | Single channel phase control array receiving signal reconstruction and space signal treatment method |
| CN2886598Y (en) * | 2005-11-07 | 2007-04-04 | 中国电子科技集团公司第三十八研究所 | Information pick-up and precise positioning device used in target achieving with rotational multi-antenna switching |
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2013
- 2013-08-09 CN CN2013103466916A patent/CN103439706A/en active Pending
Patent Citations (3)
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| EP1326086A1 (en) * | 2000-10-12 | 2003-07-09 | Fujitsu Ten Limited | One-antenna time-division control fm-cw radar |
| CN1752771A (en) * | 2005-10-20 | 2006-03-29 | 武汉大学 | Single channel phase control array receiving signal reconstruction and space signal treatment method |
| CN2886598Y (en) * | 2005-11-07 | 2007-04-04 | 中国电子科技集团公司第三十八研究所 | Information pick-up and precise positioning device used in target achieving with rotational multi-antenna switching |
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| 高玉良等: "时分单通道人工噪声雷达***", 《***工程与电子技术》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181521A (en) * | 2014-06-24 | 2014-12-03 | 合肥工业大学 | High range resolution radar capable of emitting multifrequency carrier wave |
| CN104181521B (en) * | 2014-06-24 | 2016-09-14 | 合肥工业大学 | A kind of high range resolution radar launching multifrequency carrier wave |
| CN106291479A (en) * | 2016-08-02 | 2017-01-04 | 电子科技大学 | A kind of borehole radar step frequency controllable gain receiver front end |
| CN106291479B (en) * | 2016-08-02 | 2019-04-05 | 电子科技大学 | A kind of borehole radar step frequency controllable gain receiver front end |
| CN109782284A (en) * | 2019-03-15 | 2019-05-21 | 中国科学院电子学研究所 | A method of the synchronous interference SAR of Long baselines is realized based on pulse code |
| CN112630779A (en) * | 2020-12-03 | 2021-04-09 | 中国人民解放军空军工程大学 | Software MIMO three-dimensional imaging radar system |
| CN112630779B (en) * | 2020-12-03 | 2024-03-19 | 中国人民解放军空军工程大学 | Software MIMO three-dimensional imaging radar system |
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Application publication date: 20131211 |