Precision rectifier circuit design

Can anyone help me in building up a precision rectifier op-amp(part no# IC 3041) based for my project.

I am working on Cable fault Location Estimation where i will be using Arduino microcontroller with serial enabled 16x2 LCD for results.

Before this microcontroller signals which i recevice from a coaxial cable (50ohms) will be received in a precision rectifier circuit which converts to ADC to feed into microcontroller.

I need to measure amplitude of the signals at different frequency and different fault types.

Please provide me a circuit design for above required results.

Thanks in advance

Regards,
Syed