The YJ-22 is a LACM development of the anti-ship C-802

C-802

The Yingji-82 or YJ-82 is a Chinese anti-ship missile first unveiled in 1989 by the China Haiying Electro-Mechanical Technology Academy , also known as the Third Academy...

 with a 400 km range, and possible GNSS/TM guidance currently said to be under development with an IOC expected after 2005. This 135-kilometer range system would be the first Chinese cruise missile to incorporate GNSS-assisted navigation. GNSS-aided guidance could be augmented by terrain contour matching TERCOM

TERCOM

Terrain Contour Matching, or TERCOM, is a navigation system used primarily by cruise missiles. It uses a pre-recorded contour map of the terrain that is compared to measurements made during flight by an on-board radar altimeter. A TERCOM system considerably increases the accuracy of a missile...

 (Terrain Contour Matching) guidance. Some sources believe GNSS-aided navigation could result in cruise missiles like the YJ-22 to achieve accuracies of up to 10 meters.