SECURITIES AND EXCHANGE COMMISSION

                              WASHINGTON, DC 20549

                                    FORM 8-K

                                 CURRENT REPORT

     Pursuant to Section 13 or 15 (d) of the Securities Exchange Act of 1934


                         Date of Report: February 28, 2003


                                ESSEX CORPORATION
             (Exact name of Registrant as specified in its charter)



Commission File No.  0-10772


         Virginia                                                    54-0846569
(State or other jurisdiction of                           (IRS Employer ID No.)
incorporation or organization)



         9150 Guilford Road
         Columbia, Maryland                                          21046-2306
(Address of principal executive office)                              (Zip Code)



Registrant's telephone number, including area code:              (301) 939-7000





                                ESSEX CORPORATION



Item 2.    Acquisition or Disposition of Assets

           Pursuant to an Agreement  and Plan of Merger dated as of February 21,
           2003 (the "Agreement") by and among the Registrant,  its wholly-owned
           subsidiary ("Merger Sub"), Sensys Development  Laboratories,  Inc., a
           Maryland corporation ("SDL"), and the principal  shareholders of SDL,
           Merger  Sub was  merged  with and into SDL with SDL as the  surviving
           corporation  (the  "Merger").  The  Merger  became  effective  as  of
           February  28,  2003.  Pursuant  to the  terms of the  Agreement,  SDL
           shareholders  received  a  total  of  $309,000  in cash and a maximum
           number of 1,104,907  shares and a maximum  number of 194,769  options
           exercisable for shares of  Registrant's   common  stock  in  exchange
           for  the  outstanding   common  stock   and  options   held   by  SDL
           shareholders.   The  terms  of  the  Merger  are   contained  in  the
           Agreement, which was previously  filed as an  Exhibit to Registrant's
           report on Form 8-K filed with the Commission on March 7, 2003.

Item 7.    Financial Statements and Exhibits

           (a)   Financial Statements of Business Acquired

                 (1)    Sensys Development Laboratories, Inc. Financial
                          Statements as of September 30, 2002 and 2001,
                          together with Auditors' Report are attached hereto
                          as Exhibit 99.1 and are incorporated herein by
                          reference.

                 (2)   Sensys Development Laboratories, Inc. Unaudited
                          Financial Statements for the Quarters ended
                          December 31, 2002 and 2001 are attached hereto
                          as Exhibit 99.2 and are incorporated herein by
                          reference.

           (b)   Pro Forma Financial Information (unaudited) presenting the
                    effect of the Merger as if it had been completed on
                    December 31, 2001 are attached hereto as Exhibit 99.3 and
                    are incorporated herein by reference.

           (c)   Exhibits

                 2.1   Agreement and Plan of Merger among Essex Corporation,
                         SDL Acquisition, Inc., Sensys Development Laboratories,
                         Inc. and the Principal Shareholders, dated February
                         21, 2003 (excluding Exhibits and Schedules)
                         (incorporated by reference from Exhibit 2.1 to the
                         Registrant's Current Report on Form 8-K filed
                         March 7, 2003).

                23.1   Consent of Independent Accountants

                99.1   Sensys Development Laboratories, Inc. Financial
                         Statements as of September 30, 2002 and 2001, together
                         with Auditors' Report

                99.2   Sensys Development Laboratories, Inc. Unaudited Financial
                         Statements for the Quarters ended December 31, 2002 and
                         2001

                99.3   Pro Forma Financial Information (unaudited)


                                               SIGNATURES

           Pursuant to the requirements of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                            ESSEX CORPORATION
                                            (Registrant)



DATE:  April 17, 2003                     /s/ Joseph R. Kurry, Jr.
                       ---------------------------------------------------------
                                              Joseph R. Kurry, Jr.
                       Sr. Vice President, Treasurer and Chief Financial Officer






                                  EXHIBIT INDEX


Exhibit
NUMBER     DESCRIPTION
------     -----------
2.1        Agreement and Plan of Merger among Essex Corporation,
           SDL Acquisition, Inc., Sensys Development Laboratories, Inc. and
           the Principal Shareholders, dated February 21, 2003 (excluding
           Exhibits and Schedules)(incorporated by reference from Exhibit 2.1
           to the Registrant's Current Report on Form 8-K filed March 7, 2003).

23.1       Consent of Independent Accountants

99.1       Sensys Development Laboratories, Inc. Financial Statements as of
           September 30, 2002 and 2001, together with Auditors' Report

99.2       Sensys Development Laboratories, Inc. Unaudited Financial Statements
           for the Quarters ended December 31, 2002 and 2001

99.3       Pro Forma Financial Information (unaudited)