雷達(dá)間歇輻射對(duì)測(cè)向交叉定位性能的影響分析

王亞濤; 曾小東; 周龍建

doi:10.11999/JEIT190110

雷達(dá)間歇輻射對(duì)測(cè)向交叉定位性能的影響分析

doi: 10.11999/JEIT190110

1.
中國(guó)電子科技集團(tuán)公司航空電子信息系統(tǒng)技術(shù)重點(diǎn)實(shí)驗(yàn)室成都 610036
2.
中國(guó)電子科技集團(tuán)公司第十研究所成都 610036

詳細(xì)信息

作者簡(jiǎn)介:
王亞濤：男，1981年生，碩士，高級(jí)工程師，研究方向?yàn)殡娮觽刹?、射頻隱身

曾小東：男，1985年生，碩士，工程師，研究方向?yàn)樾盘?hào)處理、射頻隱身

周龍建：男，1988年生，博士，工程師，研究方向?yàn)橛?jì)算電磁學(xué)、雷達(dá)隱身、射頻隱身

通訊作者:
王亞濤　76566628@qq.com

中圖分類(lèi)號(hào): TN974
計(jì)量
- 文章訪問(wèn)數(shù): 2304
- HTML全文瀏覽量: 1320
- PDF下載量: 67
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2019-02-26
- 修回日期: 2019-08-30
- 網(wǎng)絡(luò)出版日期: 2019-09-04
- 刊出日期: 2020-02-19

Analysis for Effect of Radar Intermittent Radiation on the Performance of Cross Location

1.
Key Laboratory of Avionic Information System Technology, China Electronics Technology Group Corporation, Chengdu 610036, China
2.
The 10th Research Institute of China Electronics Technology Group Corporation, Chengdu 610036, China

摘要

摘要:
針對(duì)雷達(dá)采取間歇輻射的射頻隱身管控措施，以雙站測(cè)向交叉定位為例，該文研究了輻射時(shí)間比與定位性能的影響關(guān)系。首先分析了雷達(dá)間歇輻射的管控方法，然后在載機(jī)做勻速直線運(yùn)動(dòng)的假設(shè)下，采用克拉美羅下界(CRLB)方法，建立了輻射時(shí)間比對(duì)定位精度的影響模型。最后給出了模型的求解步驟并進(jìn)行了仿真驗(yàn)證。仿真結(jié)果表明，不同輻射時(shí)間比對(duì)定位性能的影響不同，在初始距離為100 km，輻射時(shí)間比小于0.5時(shí)，定位收斂時(shí)間超過(guò)10 s，可以有效降低測(cè)向交叉定位的性能。
- 射頻隱身 /
- 間歇輻射 /
- 交叉定位 /
- 克拉美羅下界
Abstract:
For the radio frequency stealth control measure of radar intermittent radiation, the relationship between radiation time ratio and positioning performance is studied which takes cross location with two stations as an example. Firstly, the control method of radar intermittent radiation is analyzed. Then, under the assumption of uniform linear motion of the carrier aircraft, the influence model of radiation time ratio on positioning accuracy is established by using the Cramer-Rao Lower Bound (CRLB). Finally, the solution steps of the model are given and verified by simulation. The simulation results show that different radiation time ratios have different effects on the location performance. When the initial distance is 100 km and the radiation time ratio is less than 0.5, the location convergence time exceeds 10 s, which can effectively reduce the performance of cross location with two stations.
- Radio frequency stealth /
- Intermittent radiation /
- Cross location /
- Cramer-Rao Lower Bound (CRLB)

HTML全文

圖 1 間歇輻射特征變化情形

下載: 全尺寸圖片幻燈片

圖 2 觀測(cè)站、目標(biāo)的位置關(guān)系

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圖 3 仿真場(chǎng)景

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圖 4 不同時(shí)隙寬度對(duì)定位誤差影響

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圖 5 不同時(shí)隙重復(fù)周期對(duì)定位誤差影響

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圖 6 不同初始距離對(duì)定位誤差影響

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表 1 仿真參數(shù)

參數(shù)	取值
有效輻射功率	110 dBm
發(fā)射頻率	8 GHz
波束寬度	2.2°×2.2°
副瓣電平	–25 dB
初始距離	100 km,70 km
載機(jī)飛行速度	300 m/s
偵察飛機(jī)飛行速度	300 m/s
基線長(zhǎng)度	30 km
測(cè)向精度	0.5°
導(dǎo)航精度	50 m
采樣周期	100 ms

下載: 導(dǎo)出CSV

表 2 不同輻射時(shí)間比對(duì)收斂時(shí)間的影響(s)

輻射時(shí)間比$\beta $	初始距離100 km	初始距離70 km
1.00	2.1	0.9
0.90	2.2	1.0
0.80	3.3	1.5
0.75	3.8	1.6
0.66	7.4	2.8
0.50	12.2	6.2
0.33	19.0	10.9
0.25	25.3	14.5
0.20	31.6	18.1
0.10	46.5	27.3

下載: 導(dǎo)出CSV

表 3 不同輻射時(shí)間比及時(shí)隙重復(fù)周期下的收斂時(shí)間(s)

$\tau /T$(%)	T(s)
$\tau /T$(%)	0.5	1	2	3	4
100	3.2	3.2	3.2	3.2	3.2
80	4.1	4.1	4.1	3.9	4.2
50	6.8	7.1	6.5	6.6	5.4
40	10.1	9.3	8.6	7.2	8.8
30	20.5	29.2	24.5	15.8	13.0
20	51.5	50.1	48.3	40.8	44.7

下載: 導(dǎo)出CSV

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