新型高精度航空重力勘察系統(tǒng)研制

吳美平 張開(kāi)東 曹聚亮 洪華杰 周錫華

摘 要：航空重力測(cè)量是以飛機(jī)為載體確定區(qū)域和局部重力場(chǎng)的方法，由于其測(cè)量速度快、范圍廣、成本低，且?guī)缀蹩傻竭_(dá)任何地 區(qū)，是區(qū)域范圍內(nèi)獲取高精度、中高分辨率重力場(chǎng)信息的有效手段，可覆蓋衛(wèi)星重力測(cè)量和地面重力測(cè)量之間的頻帶。基于捷聯(lián)慣導(dǎo)的航空重力測(cè)量系統(tǒng)由于具有體積小、重量輕、功耗小、成本低、可靠性高、操作簡(jiǎn)單等優(yōu)點(diǎn)，是近十幾年的研究熱點(diǎn)之一，代表了航空重力儀的發(fā)展方向。經(jīng)過(guò)“十一五”期間的技術(shù)攻關(guān)，國(guó)防科學(xué)技術(shù)大學(xué)在捷聯(lián)慣導(dǎo)式航空重力測(cè)量系統(tǒng)硬件設(shè)計(jì)、軟件開(kāi)發(fā)、系統(tǒng)集成、數(shù)據(jù)處理以及成果應(yīng)用等方面積累了豐富經(jīng)驗(yàn)，研制的捷聯(lián)慣導(dǎo)式航空重力測(cè)量系統(tǒng)原理樣機(jī)的精度達(dá)到同類系統(tǒng)國(guó)際先進(jìn)水平。該研究的總目標(biāo)是，在“十一五”突破捷聯(lián)慣導(dǎo)式航空重力儀關(guān)鍵技術(shù)的基礎(chǔ)上，進(jìn)一步突破制約高精度航空重力測(cè)量系統(tǒng)的關(guān)鍵技術(shù)，研制新型實(shí)用化的航空重力勘查系統(tǒng)，技術(shù)指標(biāo)達(dá)到國(guó)際商用產(chǎn)品的先進(jìn)水平，實(shí)現(xiàn)國(guó)產(chǎn)航空重力勘查系統(tǒng)在油氣和礦產(chǎn)資源勘查中的實(shí)際應(yīng)用。課題的預(yù)期指標(biāo)是在異常半波長(zhǎng)分辨率3 km時(shí)，系統(tǒng)測(cè)量精度優(yōu)于l mGal，并完成不少于10 000 km測(cè)線的示范性生產(chǎn)。該報(bào)告介紹了項(xiàng)目的背景，研究基礎(chǔ)，以及該項(xiàng)目的技術(shù)方案。

關(guān)鍵詞：航空重力 慣性技術(shù) 加速度計(jì) 穩(wěn)定平臺(tái)

Abstract：Airborne gravimetry is the method to map the regional and local gravity field on airplane， it can map the gravity field of a big area rapidly and continuously for its increased speed， greater range， significantly low cost and the potential to reach anywhere， and can fill the frequency gap between land gravimetry and satellite gravimetry. Strapdown airborne gravimeter is the next generation gravimeter for its much smaller size， lighter weight and lower power consumption， and is one of the research area in gravimetry in recent 10 years.Through the rearch work in “11.5”，National University of Defense Technology（NUDT） had accumulated much experience on the hardware design， software desigh， system integration， data processing and applications of strapdown gravimetry， the principle prototype designed by NUDT has rearched the advanced level among the same type gravimeters.The goals of this project include that breaking through the key technologies restricted the high accuracy gravimetry，and developing the airborne gravimetrysystem that can meet the requirement of the reconnaissance of oil and mine， and the accuracy reaching the advanced level of commercial products. The anticipate accuracy is better than lmGal at the resolution of 3 km， and we also need to fullfill demonstrate production more than 100 000 km.This report introduced the background of the project， foundation， and the scheme to realize the goal.

Keywords：Airborne Gravimetry，InertialTechnology，Accelerometer，Stabilized platform

閱讀全文鏈接（需實(shí)名注冊(cè)）：http：//www.nstrs.cn/xiangxiBG.aspx？id=65480&flag=1