中文摘要：

为检验和评价LCRII型航空重力仪的精度和性能，与LCRI型航空重力仪进行了同机飞行试验。试验结果表明，Ⅱ型与I型航空重力仪相比，采样点重力异常之差值的标准差为4．0×10^-5ms^-2，单套重力仪的测量精度约为2．8×10^-5ms^-2；5′×5′格网平均重力异常之差的标准差为4．9×10^-5ms^-2，每套系统获得的5′×5′格网平均重力异常的精度为3．5×10^-5ms^-2，剔除两个可疑值后，精度为2．9×10^-5ms^-2。总体上，LCRI／型航空重力仪与I型精度相当，但具有更快的仪器稳定速度。

英文摘要：

In order to validate the accuracy and the performance of the LaCoste ＆ Romberg （ LCR Ⅱ ）, a con- current flight test over a mountain area was undertaken. The LCR gravimeterⅡ and an LCR gravimeter I system side by side. The results of the flight test show that the standard deviation of the gravity anomalies difference meas- ured with the two systems is about 4.0 ×10^-5ms^-2 namely the accuracy of the single system is about 2.8 ×10^-5ms^-2 if we assumed the two systems have the same accuracy. They also indicate that the standard deviation of the 5′×5′ grid mean gravity anomalies difference from the two systems is about 4.9 ×10^-5ms^-2 namely the related accu- racy of the single system is about 3.5×10^-5ms^-2 and 2.9 ×10^-5ms^-2 after two outliers were eliminated. In gener- al, LCR gravimeterⅡ system has the identical accuracy as the LCR gravimeter I system, but it can be quickly leveling off.